Handheld POS inspection specification

Application:

This standard is applicable to the inspection of all handheld finished products of the company, including product appearance/structure/function/packaging and reliability requirements.

Finished product:

Finished product	Main part: handheld POS machine
	Peripherals: charger, charging dock
	Packing: paper box, user manual, packing foam

Inspection conditions:

A) Distance: the distance between human eyes and the surface of the object to be measured is 35cm (± 5cm)
B) Visual acuity: the visual acuity of the examiner shall not be less than 1.0
C) Temperature: 25+/-3℃
D) Humidity: RH65± 10% RH
E) Lighting: 400-800Lux light intensity (light must be soft; No dazzling or glaring phenomena)
F) Appearance visual inspection time: 3-5 seconds pause time when the eyes are away from the measured object in each inspection;
G) Test method: the measured object is at an Angle of 30° from the horizontal plane, and rotates 45° from left to right in the vertical direction
H) Inspection tools: gloves, plug gauge, vernier caliper, magnifying glass, color comparison board, defect card, etc
I) Inspection time of energized picture: inspection time of each picture is 3 seconds (all-black picture, all-white picture, red picture, green picture and blue picture)
Sampling standard:

Sampling plan	Defect classification	AQL	Attachment
GB/T 2828.1-2003 normal inspection of one sampling plan, test level II	CR：Fatal defect	0	GB/T 2828.1-2003 or MIL-STD-105E
	MA：Serious defect	AQL=0.65
	MI：Minor Defects	AQL=1.5
	ACC：Acceptable defects	Acceptable

Terms and definitions

5.1 Defect classification definitions:

CR：Fatal defect	Defects in which the product may cause injury to personal safety or have hidden safety hazards or pose a threat to customer property
MA：Serious defect	The product has abnormal use defects, mainly have the following six defects:
	1. Function defects affect normal use;
	2. Performance parameters exceed specification standards;
	3. Missing parts and main marks;
	4. Excess irrelevant marks and other items that may affect product performance;
	5. Packing defects that may affect the image of the product;
	6. Serious defects in structure and appearance that are unacceptable to ordinary customers.
MI：Minor Defects	Except for CR and MA defects that do not affect the use of the product.
ACC：Acceptable defects	Acceptable defects or no defects, factory inspection for reference.

5.2 Finished product appearance definitions:

Side AA: An important area on the tablet where information is displayed (e.g., the TP display area).

Side A: The main surface that can be directly and frequently seen and exposed in normal use (e.g., the front face except the display area).

Side B: Secondary surfaces that are exposed but not directly visible in normal use (such as side edges and back of handheld devices).

Side C: Surfaces rarely seen or invisible in normal use (such as the various interfaces of handheld devices, SIM dust cover and USB dust cover interior, etc.).

Picture：

5.3 Definition of Common Defect Nouns:

5.3.1 Surface defects of plastic spray paint parts:

Point defect: for the defect with point shape, its maximum diameter shall prevail when measuring the size.
Same color point: the color of the product surface color is similar to the defect point, such as black bottom black spot, black bottom gray spot, etc.
Hexochromatic spot: the defect point whose color is different from the surface color of the product, such as white spot on black background, black spot on white background, etc.
Hard scratches: deep scratches on the surface of the sample caused by the friction of hard objects (feel).
Fine scratches: no deep scratches on the surface of the sample (no touch).
Fringe/Burr: Due to injection parameters or mold reasons, excess plastic material spills over the edge, parting surface and inserts of the plastic, which can feel scratchy to the touch.
Shrinkage: there is shrinkage on the surface of plastic parts, but it is not covered or more obvious after painting.
Impurity: visible embedded surface dust particles, fibrous wool, hair, etc.
Fool/cloth wool: Fibrous wool that is attached to the paint itself, or that falls on the paint surface when the paint is not dry.
Smudge: A stain on a smooth surface, usually caused in an unclean environment.
Paint accumulation: local paint accumulation occurs on the surface of the spray-painted parts.
Orange grain: a large area of small bumps in the shape of orange peel appear on the surface of the painted parts or electroplated parts.
Shadows: The dark area around the color that appears on the surface of paint or plastic.
Permeability: the local paint layer on the surface of the spray-painted parts is too thin and exposes the color of the substrate.
Peeling: coating peeling occurs on the surface of the product.
Hand mark: finger mark left on the surface of the sample by touching the sample with the hand before the paint is dried.
Fish-eye: there are dents or pits on the surface of the paint parts due to the unsatisfactory solvent evaporation rate.
Bubble: a small bulge on the surface of the coating, which can automatically burst with a click of your finger.
Dent: A marked deformation that forms on the surface of a product.
Fracture/fracture: the formation of cracks or breakages in the product due to internal stresses or external forces.
Warping/deformation: the uneven surface of the product surface caused by various reasons.
Residual glue/glue overflow: Excess glue is not cleaned up after hot melting of different parts.
Color difference: the color difference between the product surface and the standard sample (the customer acknowledges the sample) is called color difference.
Uneven thickness: screen printing thickness is too thick or uneven.
Poor gloss: the surface of the painted parts is inconsistent with the gloss of the sealed parts.

26 bright spot: for non-smooth plastic parts, due to uneven wall thickness, the local bright phenomenon at the abrupt change of wall thickness.

Mist: the gloss of the whole product surface is not good, it looks as if there is a layer of fog.

5.3.2 Definition of adverse defects of display components (TP and LCD) :

Scratch: by the sharp hard object touch and left on the surface of the parts of the slender linear scratch marks.

1.1 Light scratches: there is no concave feeling when using fingers (nails) horizontally, but only obvious slight scratches can be seen visually

1.2 Shallow scratches (no scratches) : a slight concave feeling can be seen when the finger (nail) is scratched horizontally

1.3 Deep scratches (perceptive scratches) : Horizontal strokes with fingers (nails) may cause scratches or obvious concavity

Scratch: scratches or friction by sharp hard objects on the surface of the parts left blocky marks
Fingerprint: fingerprint left by touching the product with bare hands
Oil and dirt: clumpy or membranous childish or discolored foreign bodies that are obviously adhered to the surface of parts and can be erased
oxidation, rust: FPC PIN collective material chemical oxidation phenomenon
Color difference: there is a difference between the color and the standard color, which is called color difference
Color imbalance: the color of some parts is different from that of other parts
Point defects: the defects with point shape shall be measured according to their maximum diameter
Screen drum/Film drum: the arch of the middle part of T/P on-line Film is higher than the edge, forming the phenomenon of height difference
Newton’s Ring/Rainbow phenomenon refers to the appearance of a colored halo in a transparent area under reflective conditions.
Defect of drawing inspection line: after the product is lit, the screen has the phenomenon of vertical bright line, dark line or horizontal bright line, dark line.
Dark spot: due to the failure of MOS tube, a sub-pixel does not emit light all the time, which is called dark spot. When the area of the dark spot is greater than half of a sub-pixel, it is denoted as a dark spot. The color spots of R, G and B that are not pure in LCD under the condition of white screen are called dark spots. The appearance of dark spots can be divided into two situations:
When switching to red, green and blue display mode, only one of the display modes in R, G or B has a black dot at the same position, indicating that some pixels have only one dark dot.
When switching to red, green and blue display mode, only two display modes in R, G or B have black dots at the same position, indicating that there are two dark dots in this pixel.
Parallel dark spots: if two sub-pixels are both vertical or horizontal or adjacent to each other, they are called parallel dark spots
Bright spot: due to the failure of MOS tube, a sub-pixel is always glowing, which is called a bright spot. When the area of a highlight is greater than half of a sub-pixel, it is recorded as a highlight. LCD in the case of black screen R, G, B (red, green, blue) points called bright (bright defects must be able to pass the 5% ND filter). The appearance of bright spots can be divided into two situations:
A dot showing R, G, B (red, green, blue) on a black screen is called a highlight.
When switching to the red, green and blue display mode, only one of the display modes has a white dot, while the other two modes have other color dots. This phenomenon is that there are two bright spots in the same pixel.
Foreign body point/line defects: defects caused by the intrusion of impurities in the LCD panel or the backlight module, which are pointlike or linear when viewed visually.
Slight point: due to the intrusion of conductive impurity particles between the two electrodes in the LCD screen, some areas within the pixel have been bright. When the area of the bright point is less than or equal to 1/2 sub-pixel and visible (the bright point is still visible through 5% ND filter), a bright point is counted.
White spots/white blob: white spots and white blob on the back light guide plate itself, caused by foreign bodies carried by the material and scratches on the light guide plate and in medium cases during transportation.
Bad gray scale: the color of the gray scale screen is normal from light to deep, or from deep to light, and the display is uniform. If there is unevenness in the display, it is called bad gray scale.
Remnants: When the screen is switched, there is a remnant of the previous screen in the corner of the current screen.
MURA: After the fixture is lit, uneven heterochromatic spots are shown, with various types and unstable positions.
Cross-talk: Two independent images interfere with each other.

Inspection standard for appearance defects of the whole machine

Note:

Each defect listed in the following table shall be marked with “●” in the box after the corresponding row according to its degree
The defects other than those listed in the following table that may affect the quality of the products shall be subject to the signed sample
The defects listed in the following table are acceptable if they can be wiped with a soft cloth or blown away with an air gun.

Defect code comparison table:

Code	Name (unit)	Code	Name (unit)
N	Number(pcs)	D	diameter(mm)
L	length(mm)	H	height(mm)
W	width(mm)	DS	distance(mm)
S	Square(mm²)

Side AA（appearance area）the standardfor determination of appearance defects:

IGNORE (indicates that no more than 3 items in the range 10mm*10mm; No more than 15 on the screen).
The total number of defects per PCS on Side AA is N ≤ 6.

Examine region	Examine project	Criteria		Defect level
Examine region	Examine project	Criteria		ACC	MI	MA	CR
LCD appearance	Display area dot defects (white spot, black spot, black and white spot, bubble, dent, foreign body point)	Max diameter: D(mm); width: W(mm); length: L(mm)
		D≤0.25mm	Ignore	●
		0.25mm<D≤0.4mm，DS≥5mm	N≤3		●
		D>0.4mm or DS<5mm	NG		●
	Linear defects in display area: visible lines such as wool, black and white lines, scratch lines, etc	W≤0.03mm	Ignore	●
		0.03<W≤0.05mm ，L≤3mm，DS≥10mm	N≤2		●
		0.05<W≤0.1mm ，L≤3mm	N≤1		●
		N>2 or cable W≥0.1 or DS<10mm	NG		●
Painting inspection specification	Light dot	The screen (greater than or equal to 7 “) takes the intersection point of the diagonal line as the center. Starting from the center, 2/3 of the shortest distance of each four corners is taken as the diagonal line. In the rectangular area formed, bright spots, noise spots and dark spots of the screen are not allowed to appear. Outside the rectangle, the total number of screen highlights, noise spots and dark spots should not be more than 3, and the distance between them must be greater than 1 cm. Note: The outer diameter of bright spot, noise spot and dark spot should be ≤0.3mm. The ratio of defective machines (defective machines/number of lots sampled) shall not exceed 5% per lot.	N≤2		●
	Dark dot	Single dark dot ≤3, DS≥ 5mm			●
	Parallel dark dot	Allow 1			●
	No display	Don’t allow				●
	Light leakage (under black interface)	It is not allowed under the condition of 5% ND filter.			●
	Mura type (macula/leukoplakia)	It is not allowed under the condition of 5% ND filter.			●
	ghosting	Don’t allow			●
	Switch on the off-color (under the white interface)	No obvious color bias or samples according to limits are allowed.			●
	White dots, white blob	Judging by ND filter 5%, light leakage is not allowed.			●
	White dots, white blob	If 5% ND filter is used to detect no light leakage, dot defects will be followed.			●
	dysfunctional	Do not allow black screen, white screen, no display (no picture).				●
		Do not allow bright lines (horizontal lines, vertical lines).				●
		Split screen, flower screen and flash screen are not allowed.				●
		LED dead light/flicker/abnormal light source is not allowed.				●
TP appearance	TP light scratch	W≤0.05mm	Ignore	●
		0.05<W≤0.10mm，L≤5mm DS≥10mm	N≤1		●
		W>0.10mm, or DS<10mm	NG		●
	TP heavy scratch	Do not allow.				●
	TP Black and white spots, top wounds, white and black spots, mottled spots and other spot like defects, granular foreign bodies	S≤0.25mm²	Ignore	●
		0.25mm²<S≤0.30mm²	N≤2		●
		S>0.30mm²orDS<10mm	NG		●
	TP type foreign body, thread defect, wool, black thread, bright thread, white thread or fiber	W≤0.05mm	Ignore	●
		0.05<W≤0.1mm and L≤3mm	N≤1		●
		W>0.1mm or DS<10mm	NG		●
	TP Pinhole (BM Area) ink Area	D≤0.15mm	Ignore	●
	TP Pinhole (BM Area) ink Area	0.15mm<D≤0.25mm；DS≥10mm	N≤2		●
	TP shrink oil	Do not allow				●
	The edge of the TP visible area protrudes the edge of the tooth.	H≤0.15mm，do not intensive	Ignore	●
		0.15mm<H≤0.2mm,L≤1, DS>10mm	N≤2		●
	Indentation (indentation), air bubble	D≤0.2mm	Ignore	●
		0.2mm<D≤0.3mm,DS≥10mm	N≤2		●
		D>0.3mm	NG			●
	Newton’s ring (rainbow phenomenon)	Visual visibility is not allowed.			●
	Water ripple	Visual visibility is not allowed.Note: Visual inspection under normal light.			●
Between Screen the defect	Pointed foreign body defects between TP and LCM	D≤0.30mm, do not allowed in the middle area of the screen.	N≤2		●
	Linear defects such as filaments between TP and LCM	W≤0.05mm L≤5mm, only allowed at the edge of the screen.	N≤1		●
	TP internal dustproof foam cotton	To form an S shape or to show a black edge or burr.			●
overall appearance	Screen breakage(TP、FOG)	Screen breakage is not allowed.				●
	TP up	TP warped and gum separation; There is a strange sound when pressed by hand.				●
	Dirt and fingerprint	Wipe dirt is allowed; Do not wipe dirt by dot/line bad judgment.			●

Side A/ B/ C（appearance area）the standardfor determination of appearance defects:

Defect item

Standard

Defect levels

Side A

Side B

Side C

ACC

Plastic spray paint (including surface shell, keys, etc., keys refer to side A)

same color points

D≤1mm，N≤2，DS≥30mm

D≤1.5mm，N≤2，DS≥30mm

No require

●

different color points

D≤0.5mm，N≤2，DS≥30mm

D≤1mm，N≤2，DS≥30mm

No require

●

Hard scratch

L≤1mm，W≤0.2mm，N≤1

L≤2mm，W≤0.2mm，N≤2

No require

●

Fine scratch

L≤3mm，W≤0.1mm，N≤1

L≤5mm，W≤0.1mm，N≤2

No require

●

Beech/Burr

H≤0.2mm

H≤0.3mm

No require

●

Sharp, may cause personal injury

●

Shrink

Visual visibility is not allowed.

●

Impurities

D≤1mm，N≤2，DS≥30mm

D≤2mm，N≤2，DS≥30mm

No require

●

MAO flocculant

L≤3mm，W≤0.1mm，N≤1

L≤5mm，W≤0.1mm，N≤2

No require

●

White spot

Square ≤1mm²and less

●

Dirt

Wipe dirt is allowed; Do not wipe dirt by dot/line bad judgment.

Product paint

D≤1mm，N≤2,DS≥30mm

D≤2mm，N≤2,DS≥30mm

No require

●

Product paint

Not apparent for 3 seconds within 30CM.

No require

●

Product paint

Don’t allow.

No require

●

Fingerprints

Can be erased.

No require

●

Fish eye/bubble

Don’t allow.

No require

●

Dent

Not apparent for 3 seconds within 30CM.

No require

●

Rupture/fracture

Don’t allow.

●

Residue/overflow glue

Don’t allow.

●

Warp/deformation

≤0.5mm

●

Color difference

According to the upper, middle and lower limit sample or comparison with the sample is not obvious.

●

Bad lustre

According to the upper, middle and lower limit sample or comparison with the sample is not obvious.

●

Rupture/fracture

Don’t allow.

●

Bottom cover

Defect item

Side A

Side B

Side C

Defect levels

Oxidation/corrosion

Don’t allow.

●

White spot

Square ≤1mm²and less

●

scratch

L≤3mm，W≤0.1mm，N≤1

L≤5mm，W≤0.1mm，N≤2

No require

●

Spot defects/bruises

D≤1mm，N≤3，DS≥30mm

D≤2mm，N≤3，DS≥30mm

No require

●

Dirty/not greasy

Visibility is not allowed.

Colour and lustre is uneven

Visual visibility is not allowed.

No require

●

Beech/Burr

H≤1mm L≤3mm

H≤2mm L≤3mm

No require

●

Sharp, may cause personal injury

●

Warp/deformation

≤2mm

●

cracks

Don’t allow.

●

Printing picture（LOGO）

Defect item

Side A

Side B

Side C

Defect levels

Screen printing with hole

Don’t allow.

●

Oil spill/reprint

Don’t allow.

●

Screen printing irregular edges

Don’t allow.

●

Print the dirt

Visibility is not allowed.

●

Note: 1. The sum of defects of the whole plane A and plane B is N≤6;

VII.Machine inspection items and standards

Note:

Each defect listed in the following table shall be marked with “●” in the box after the corresponding row according to its degree.
The defects other than those listed in the following table that may affect the quality of the products shall be subject to the signed sample.

No.	Defect items	Standard	Defect levels
No.	Defect items	Standard	ACC	MI	MA	CR
1	Between the surface shell and the bottom shell	Unilateral clearance ≤0.5mm and uniform clearance; And there is no warping loosening phenomenon, there can be no abnormal sound when pressing.	●
2	TP (LENS) and between the shell	Unilateral clearance ≤0.25mm and uniform clearance, segment difference ≤0.25mm, and no warping loosening phenomenon, there can be no abnormal sound when pressing.		●
3	Between the key and the chassis	The gap is uniform, and the unilateral gap is less than 1.5mm. All around the gap to be uniform, feel good.		●
4	Keys feel	Do not allow the keys to sag significantly. Button feel even, do not allow stuck, top dead phenomenon.		●
5	Key Comprehensive Situation	The gap is uniform, and the unilateral gap is less than or equal to 0.5mm. Button in the center, not to one side, difference ≤0.2mm.		●
6	Interface with housing	Interface should not be obvious deformation, oxidation, scratch and other phenomena.			●
6	Interface with housing	Scrape the hand at the interface, there is a gap, the distance of 30cm visibly.			●
7	whole machine internal	There is noise when shaking the machine (conductive materials such as tin beads and metal).			●
7	whole machine internal	Shaking the machine when the noise, plastic and other non-conductive substances, do not affect the function.		●
8	Labeling	Sticker position is wrong, missing, re-paste.		●
8	Labeling	Label broken and layered.		●
9	Whole machine smudgy	Screw plug less, not installed in place.		●
		Fuselage sticker screen print SN code does not meet the requirements.		●
		The fuselage sticks screen printing fuzzy, double shadow, dirty.		●
		Bar-code labels with a length less than 5cm slant more than 5 degrees, and labels with a length more than 5cm slant more than 10 degrees.		●
		The machine has obvious wipe dirt, oil.		●
		The machine has obvious non-wipe dirt, oil.			●
10	Control key	The headphone holder is 0.2mm lower than the case.			●
10	Control key	Any function keys, switches feel bad (a machine on the key strength requirements are basically consistent).			●
11		Any function button is not sensitive or completely invalid (press the button lightly, the button is acted once, the player does not reflect).		●
		Movable parts too loose, too tight obvious deformation did not fail.			●
		Any function display is not consistent with function control but function is normal.			●
		Any function display does not match the function control, the function is not normal.		●
		Any jack or plug is invalid.		●
		Bad contact of jack and plug.			●
12	Function	Turn on the power button, press the power button, the boot time ≤3 seconds can normally enter the boot screen “customer LOGO”; According to the model, enter the menu system operation, click the button response < 1 second must realize this function.		●
13	On/off function	Touch, button response speed < 1 second.			●
		Any of the nominal functions cannot be realized (login to the Internet, audio and video playback, standard USB2.0 functions), and cannot be restored after reboot.		●
		WiFi or 3G for Internet connection.		●
		The recording has serious noise, and the recording content cannot be determined.		●
		Unrecognized when online.		●
		Two copies of a file larger than 10MB, an exception occurs (can not copy, dropped line, etc.).		●
		Image or audio no output, or sometimes no.		●
		Image or sound is seriously distorted, clutter, noise cannot work properly.		●
		Bad feel of any function keys and switches (the key strength requirements on a machine are basically consistent) One-time failure (no recurrence, reset and restart normal) Batch defect rate > 1.5% (suspended shipment).			●
		DC power socket tightness is good, with the end of the swing line is not off.		●
		After the headphone is inserted into the headphone stand, it shall not appear bad contact, silent, black screen, bloated screen, shutdown, crash and other phenomena (the phenomenon is repeated, and it is confirmed as the host problem).		●
		Left and right vocal tract imbalance, murmurs, and incorrectly defined left and right vocal tracts.			●
		The largest volume, the loudspeaker sound distortion, broken sound, noise, etc.			●
		The key has no function and error response (the function and order of the multi-function key should be the same as the defined value), and cannot be restored after reboot.		●
		Whether the video shooting is realized and the recording format is played normally.			●
		Realize the extension card text copy copy to the machine, play normal.		●
		Expansion features (extension cards, etc.) cannot be implemented or are poorly implemented.		●
		Support expansion card range, support U disk capacity size range, inconsistent with the specification.			●
		File or folder copy to the specified location, the original file according to the specified path to complete the copy.			●
		When PC is online, the machine and expansion card cannot be recognized and removed normally.		●
		Battery icon is not displayed correctly.			●
		In the process of operation, there is a white screen/flower screen, crash and other serious failure can not continue to use, and re-operation within 10 times again.		●
		One-time function problems, such as: video crash/flower screen, audio crash, boot white screen/flower screen, game flower screen…… And other functions of a one-time defect (repeated testing of this function for 10 times did not reproduce).				●
		Customers with special requirements of the model, can not meet any of the special requirements.		●
		Unable to boot, boot screen flashing, no display, can not enter the menu.			●
		When starting up, the boot LOGO will appear.			●
		A crash occurred during normal operation.			●
		Browse all music files normally. Files play normally.			●
14	Music function	Enter the music playback interface, the interface displays normal, no flicker and the playback automatically stops.			●
		There are obvious imbalance between the left and right sound channels of the earphone, murmur, boom and silence.			●
		Left and right vocal tract, monophonic.			●
		Fast-forward, fast-back, or song switching functions cannot be implemented.			●
		Invalid volume addition and subtraction, abnormal volume regulation, noise.			●
		Invalid volume addition and subtraction, abnormal volume regulation, noise.			●
		The video image is clear, and the video display does not have the phenomenon of flower screen, missing image and uneven color image.		●
		Video skip and interrupt will not occur in video playback.		●
		Video sound quality effect: no low sound or noise phenomenon.		●
		Insert the earphone sound quality is good, can not have external sound, turn the earphone without INT phenomenon.			●
	Camera/ video	No crash or other malfunction occurs when the video is played continuously.			●
		Volume +/-, play/pause, fast forward/fast back, select the loop mode, the video can be played in a loop.			●
		Format file test, can play normally, can not have can not play and play bad phenomenon.			●
		When shooting, the picture should be clear, there should be no bad display and other bad phenomena.			●
		The color should be clear and normal when taking photos.			●
		When viewing photos and DV videos, there should be no abnormal color, video card and other phenomena.			●
	Picture	Enter the picture menu, you can normally browse all the pictures, can not be unable to enter the state.			●
		Zooming			●
		The color of the picture is normal, clear, and the content of the picture is consistent with the required content.			●
		Set to automatically browse, when entering the picture browse, the picture will automatically transform.			●
	Slot card testing	Insert the SIM card into the mobile phone, and it can display the network symbol of “China mobile” or “China unicom” within 5-10 seconds after turning on the phone.		●
	Slot card testing	The card is inserted/taken smoothly, without the phenomenon of stuck.			●
	WiFi testing	After turning on WIFI, you can scan multiple WIFI signals and browse the web normally.			●
	WiFi testing	After successful connection, check whether WIFI signal strength is normal and whether there is signal instability.		●
	USB peripheral function test	Connect to OTG, you can read the relevant content of USB peripheral products.			●
	USB peripheral function test	Can be connected to the computer, display U disk.			●
	Memory function	Hardware identification name meets the requirements.			●
		Read, write, and format operations are normal.			●
		Plug and unplug normal, copy data normal.			●
		Correct capacity, no irrelevant content, no virus.			●
	Computer connection	Connect to the computer, the computer display removable disk, no no disk display state.			●
	Computer connection	Normal data transmission, normal disk opening, no abnormal phenomenon.			●
	Power test	Connect the DC port on the side with the charger, and there will be a relevant indicator light.			●
	Power test	When charging, there will be lightning or other charging symbols, and the symbols will disappear after full charge.			●
	Touch screen test	Touch has no effect or touch is insensitive.		●
	Inner file	Is the number of built-in files and APK tools consistent with the order requirements.		●
		Font or font size as required on drawing or as signed sample.		●
		Words are not allowed to have wrong words, unclear, broken line width ≤0.1mm.		●
	Logo printing	Position offset 1mm, position tilt 0.4 degrees (subject to the reference line).		●
	Printing test	The printer is not printing properly.			●
		The printer can not print multiple languages, there are special test software.		●
		Printer concentration cannot be debugged.		●
		Printing speed is too slow.		●
	1D/2D scanner	Cannot use scan, cannot recognize.			●
	1D/2D scanner	The scan data does not match the actual data.			●
15	Structural cracks	Gap between upper shell and upper shell ≤0.5mm; gap between upper shell and TP ≤0.25mm.		●
		Lower shell gap ≤0.5mm.		●
		The gap between lens and decorative frame is ≤0.5mm.		●
16	The key structure	The gap between the key and the shell is ≤0.5mm. The difference between the maximum and minimum gap between the key and the surrounding gap is ≤0.25mm.		●
		Can not have no effect on the keys, stuck, no feel, short travel.			●
		The key is loose, not flexible, the key is stuck, the key is abnormal sound.			●
		Incorrect loading or use of wrong material.		●
		Lenses (TP) are raised and not strong in viscosity. They will fall off when gently pressed by hand.		●
17	The lens	2 points <0.25mm are allowed on the lens, and the spacing should be more than 1CM.		●
		No fingerprints or dirt are allowed on the lenses (TP).		●
		There should be no dirt, dust or blocking the lens of the camera lens.		●
18	Other structural parts	USB cover buckle is not in place or difficult to open.		●
		Loose body assembly structure or damaged structural parts.		●
		Swing machine has abnormal sound, missing parts.		●
		Bad headphone holder or headphone structure, bad contact and silence after inserting the headphone.		●
		Less screws, slip teeth, rust, not in place.		●
		Inflexible and stuck when inserting earphone.		●
		DC interface, headphone interface, HDMI interface, TF card interface higher than the shell, deformation, dirty.		●
		The shell screw is not allowed to be higher than the shell and touch the uneven feeling.		●

VIII.Packing inspection items and standards

No.	Standard	Defect levels
No.	Standard	ACC	MI	MA	CR
1	The packing case is damaged, damp or unclean; The packing is not solid, seriously cracked and damaged.			●
2	Wrong type of color box.			●
3	The attached content is not consistent with the BOM list.			●
4	Attachment specifications wrong, no more, less attachment.		●
5	Accessories are dirty and damaged.		●
6	Barcodes cannot be scanned.		●
7	Wrong/omissions of outer carton stickers; Improper printing and other non-standard marks should be pasted on the packing box.		●
8	The print is illegible.		●
9	Incorrect product name, serial number, or quantity.		●
10	Handheld POS machine, color box, Carton, data file is inconsistent with SN number.			●
11	The plastic film bag is badly torn and damaged.		●
12	The sealing box is not tightly closed, the sealing belt is degummed and warped.		●

Reliability test:

Experimental purpose: the reliability and stability of hardware and software.

Conclusion: After all the reliability tests are finished, make a report by the quality control department, make a conclusion.

Conditions for reliability test: 1. Replace a component involved in the following experiment; 2. New trial production machine, 3. The first mass production machine.

Number of machines: No less than 5 machines for each extreme test.

Testing way	Purpose	Testing condition	Defect situation	Conclusion
Plug and unplug the earphone 300 times.	1. Quality of headphone holder. 2. Welding quality. 3. Influence of earphone seat location.	1、2、3	Monophonic, uncontrollable external playback, sound distortion, silence, headphone stand off.
USB/DC block plug and pull 200 times, online.	1. USB/DC seat quality. 2. Welding quality. 3. USB /DC seat layout influence.	1、2、3	Unable to connect, touch the USB cable after connecting, the USB/DC seat falls off. Bad contact with DC seat.
Key/dial 600 times.	1. Key quality. 2. Structural influence.	1、2、3	The key is invalid and the INT phenomenon appears.
Electrostatic test: contact each position of the machine shell at a frequency of 20 times/second contact discharge, antistatic capacity should be more than 4000V; Air discharge above 8000V.	Avoid some dry areas in the north, the machine abnormal, serious may lead to machine burning.	1、2
Spray oil, screen printing product wear test.	Test oil injection, silk screen wear index.	Use rubber to wipe the oil spray and fix the position of the screen printing product. The length of the product is about 10CM, and rub it repeatedly for 20 times (one back and forth is one unit).	The key is invalid and the INT phenomenon appears.	Suitable for oil injection, screen printing products.
Shell screen printing, oil spray hundred grid, adhesion test.	Test whether the adhesion of the injection product meets the requirements.	Take the relatively smooth oil spraying surface of the product and use a sharp blade to draw 1CM square with length and width, then divide the square into 100 small square with length and width of 1MM. Paste the cut square with ‘3M adhesive 600#’ and level off the square with an Angle of 45 degrees and pull it up in the direction of time quickly (screen printing direct test). Repeat 10 times.	The key is invalid and the INT phenomenon appears.	Suitable for oil injection, screen printing products.
Shoot machine, add shock.	Check for anomalies that may occur under vibration conditions.	1、2、3	Flower screen, crash, device fall off.
Test according to the aging process.	When working for a long time, whether the hardware and software of the machine is unstable.	1、2、3	Crash, restart, charging can not enter the power, do not boot.

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Handheld POS inspection specification