Casio PX-780 User manual

SERVICE MANUAL
HANDHELD TERMINAL
IT-3100 Series (PX-780)
JUL. 2008
Ver.4 : Feb. 2011

CONTENTS
IT-3100 SERIES
PAGE
PRECAUTIONS................................................................................................................1
1. GENERAL...................................................................................................................2
2. SPECIFICATIONS......................................................................................................5
3. TECHNICAL INFORMATION .....................................................................................9
4. TROUBLESHOOTING .............................................................................................14
5. SYSTEM FUNCTION ...............................................................................................21
6. BASIC OPERATIONS ..............................................................................................25
7. RESET OPERATION................................................................................................33
8. HARDWARE INSPECTION......................................................................................35
9. ADJUSTMENT/SETTING UPON REPAIR ...............................................................67
10. DISASSEMBLY AND ASSEMBLY ............................................................................74
11. EXPLODED VIEW....................................................................................................87
12. PARTS LIST .............................................................................................................93
APPENDIX 1. RECOMMENDED PAPER LIST..............................................................98
APPENDIX 2. TEST SHEET SAMPLE...........................................................................99
 • BluetoothisatrademarkownedbyBluetoothSIG,Inc.andlicensedtoCASIOCOMPUTERCO.,LTD.
 • MicrosoftandWindowsareeitherregisteredtrademarksortrademarksofMicrosoftCorporationinthe
UnitedStatesand/orothercountries.
 • Othercompanynamesandproductnamesusedinthisdocumentaretrademarksorregistered
trademarksoftheirrespectiveowners.
IMPORTANT:
THE COMPANY RESERVES THE RIGHT TO REVISE THIS PUBLICATION OR TO CHANGE
ITS CONTENTS WITHOUT NOTICE.
INFORMATION CONTAINED HEREIN IS FOR REFERENCE ONLY AND DOES NOT CON-
STITUTE A COMMITMENT ON THE PART OF THE MANUFACTURER OR ANY SUBSE-
QUENT VENDOR.
THEY ASSUME NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURA-
CIES THAT MAY APPEAR IN THIS PUBLICATION NOR ARE THEY IN ANYWAY RESPON-
SIBLE FOR ANY LOSS OR DAMAGE RESULTING FROM THE USE (OR MISUSE) OF THIS
PUBLICATION.

– 1 –
PRECAUTIONS
1. Precautions when handling and using the product
Charging,Feeding,Batteries
1UseDT-9723LICasthelithium-ionrechargeablebatterypack.DonotuseDT-9023Li.Doingsomaycause
malfunctionoftheproduct.
2WhenchargingaDT-9723LICasasinglebatterypack,useaspecialchargerforDT-9723LIC.Useofa
chargerotherthandesignatedmaycauseresultinfailureincharging.
3Asecondarybatteryisusedasabackup.Donotreplacethemainbatterywhenthebackupbatteryisnot
yetfullycharged.Removingthemainbatterywhilethebackupbatteryisused-upmaycausedeletionof
data.
4Replacethemainbatteryin10minutes(whenthebackupbatteryisfullycharged).
 Datainsidetheproductmaybedeletediftheproductisleftwithoutthemainbatteryformorethan10min-
utes.
5Therechargeable battery pack maysufferfromlowvoltage due toshippinginspection and naturaldis-
charge.Makesuretochargetherechargeablebatterypackbeforeusingtheproduct.
6Lifeoftherechargeablebatterypackwillbeshortenedasitisrepeatedlychargedanddischarged.Re-
placetherechargeablebatterypackwhencontinuousoperatingtimebecomesextremelyshorterevenifit
isfullycharged.
7Memory(RAM)canbebackedupforabout10minuteswithoutthemainbatterywhenthebackupbattery
isfullycharged.
8Backupbatterybecomesfullychargedinfourdayswhenamainbatteryisloaded.
9ChargingtheproductwithoutloadingtherechargeablebatterypackwillalsolightthechargeLED.
 MakesuretoloadtherechargeablebatterypackDT-9723LICwhencharging.
bkWhentheproductpoweristurned on, theprotectiontimer may stop chargingtherechargeable battery
pack,whichmaynotyetbeinfullcharge,10hoursafterthestartofcharging.
Printer,Printing,Paper
1UseprinterpaperrecommendedbyCASIO.
2Performpaperwidthsetting(58mm/80mm)beforeusingtheprinterforthersttime.
3Donotmixpaperofthedifferentpaperwidths(58m/80mm)whenusingtheprinter.Doingsomaydamage
theprinter.Printingontopaperofthewidthof80mmcannotbedoneafterprintingontopaperofthewidth
of58mm.
4Attachanoptionalholderforcutpaperwhenusingcutpaper.
5RefertotheprecautionswrittenintheUser’sGuideforthedetailsofprintingandstoringpaper,etc.
6Aprinterdoesnotoperatewhentheremainingcapacity(voltage)oftherechargeablebatteryisbelowthe
leveltooperatetheprinter.
Other
1Thisproductusessensitivewirelesscommunication.Inordertoperformgoodcommunication,donotuse
devicesthatemitradiowaves(suchasacellphone)neartheproductduringthecommunication.Ifsuch
devicesmustbeused,keepthemawayfromtheproduct(ex.keepacellphoneawayfromtheproductfor
morethan30cm.).
2RefertotheUser’sGuidefortheprecautionsforthewirelesscommunication.
2. Storage
1Removethebatterywhenstoringtheproductforalongperiodoftime.
2Avoidstoringtheproductintheenvironmentwithhighertemperaturesuchasinsideacar.
3Setprinterpaperinordertopreventdamagetotheprinterwhennotusingtheproductforalongperiodof
time.
3. Safety Precautions
1Danger:RefertotheUser’sGuide.
2Warning:RefertotheUser’sGuide.
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
CAUTION

– 2 –
1. GENERAL
1-1. Product Concept
IT3100, a model enhanced from the IT-3000 series on the functions below, shall be the key product line
that represents CASIO-brand handheld terminals.
(1) Upgraded OS
 •WindowsCE5.0isinstalled
 •VS2005isavailableforuse
 •Thedevicecontrollibrary(abstractionlibrary)facilitatethedevelopmentofapplications.
(2)Highervisibilityinoutdoors
 •Adaptingthehigh-visibilityLCD
(3)LargerRAMsize
 •Increasedto128MB
(4)UpgradedBluetooth
 •UpgradedfromVer1.1toVer1.2(Sep.2009)
 •UpgradedfromVer1.2toVer2.0(Dec.2010)
1-2. Conguration by Model
Product Name
Specication
RAM Bluetooth Magnetic
Card Reader
CMOS
Imager
Serial I/F
(8-pin)
Serial I/F
(14-pin)
IT-3100M53E/M53E2
(PX-780NE/JE) 128MB  Ï Ï  
IT-3100M54E/M54E2
(PX-780RE/KE) 128MB   Ï  
IT-3100M55E/M55E2
(PX-780TE/LE) 128MB    Ï 
IT-3100M55U
(PX-780TU) 128MB    Ï 
IT-3100M56E/M56E2
(PX-780UE/QE) 128MB  Ï  Ï 
IT-3100M56U
(PX-780UU) 128MB  Ï  Ï 

– 3 –
1-3. Options
Product Descriptions
HA-B61IO BridgeSatelliteCradle
HA-B30CHG Cradle-typeBatteryCharger
HA-B34AT BatteryChargerCarMountUnit
DT-827CAC CarPowerCable
DT-9723LIC Lithium-ionBatteryPack
7.4V2,200mAh
DT-9721CHGE SingleBatteryCharger
AD-S42120AE ACAdaptorforHA-B61IO,HA-B30CHG
INPUT: 100V-240VAC50/60Hz
OUTPUT:12VDC3.5A
DT-9020ADP-GS
DT-9020ADP-US
ACAdaptorforIT-3000
ACAdaptorforIT-3000
INPUT: 230VAC50Hz(DT-9020ADP-GS)
 120VAC60Hz(DT-9020ADP-US)
OUTPUT:9.0VDC
DT-887AXA RS-232CCrossCableforconnectingPC
andBridgeSatelliteCradle.
DT-888RSC RS-422ModularCableforconnecting
BridgeSatelliteCradles.

– 4 –
Product Descriptions
DT-380USB USBCableforconnectingPCandBridge
SatelliteCradle
HA-B80AX RS-232CCrossCableforconnectingPC
andIT-3000.
HA-B93PH PaperHolder
HA-B92PCV SplashProtectCover
HA-B90DCV ScreenProtectCover

– 5 –
2. SPECIFICATION
2-1. System Requirements
MODEL IT-3100M53E/
M53E2
IT-3100M54E/
M54E2
IT-3100M55E/
M55E2 IT-3100M55U IT-3100M56E/ M56E2 IT-3100M56U
CPU Marvell®PXA255 Application Processor (400 MHz max.)
OS Microsoft®Windows®CE 5.0 operating system
Memory RAM 128MB
ROM 96MB ROM (user dened: Approx. 30MB)
Display Type 3.5-inch, 2-Way TFT Color LCD
Size 240 × 320 dots
C-MOS Imager Reading 1D Code symbologies
_ _
UPC-A/UPC-E/EAN8 (JAN8)/EAN13 (JAN13)/Codabar (NW-7)/
Code39/Interleaved 2 of 5 (ITF)/MSI/Code93/Code128 (EAN128)/
Code11/IATA/RSS-14 (GS1 DataBar Omnidirectional)/RSS Limited
(GS1 DataBar Limited)/RSS Expanded (GS1 DataBar Expanded)
Reading distance _ _ Within approximately 40 mm~410 mm (19/16" to 161/8")
Reading stacked 2D Code
symbologies (Stacked) _ _
PDF417/Micro PDF/CODE49/Composite/Codablock F/TLC39/RSS-14
Omnidirectional Stacked (GS1 DataBar Omnidirectional Stacked)/RSS
Expanded Stacked (GS1 DataBar Expanded Stacked)/RSS-14 Stacked
(GS1 DataBar Stacked)
Reading distance _ _ Within approximately 50 mm to 250 mm (115/16" to 913/16")
Reading Matrix 2D Code
symbologies (Matrix)
_ _ Aztec, Data Matrix, Maxicode, QR Code
Reading distance _ _ Within approximately 60 mm to 150 mm (23/8" to 515/16")
IR
Communication
Interface Compatible with IrDA Ver. 1.1
Synchronization Start/stop synchronous, frame synchronization
Transfer Rate Up to 4 Mbps (max.)
Serial Interface Interface 8-pin _ _ _ _
Synchronization Start/stop synchronous _ _ _ _
Transfer Rate 300 bps to 115.2 Kbps _ _ _ _
14-pin Serial
Interface
Interface 14-pin
Synchronization Start/stop synchronous
Transfer Rate 300 bps to 115.2 Kbps
* Wake on function available
Bluetooth
Communication
Protocol Bluetooth® Specication Ver.1.2 : (M53E/M54E/M55E/M55U/M56E/M56U)
Bluetooth® Specication Ver.2.0 : (M53E2/M54E2/M55E2/M56E2)
Range Approximately 3 m (depends on radio wave conditions and environment)
Output 3 dBm max. (PowerClass2)
* Wake on function available

– 6 –
MODEL IT-3100M53E/
M53E2
IT-3100M54E/
M54E2
IT-3100M55E/
M55E2 IT-3100M55U IT-3100M56E/ M56E2 IT-3100M56U
Printer Type Drop-in thermal line dot printer
Effective Printing Width 72 mm (80mm/82.5mm wide paper)/48 mm (58 mm wide paper)
Printing Speed 28 lines/second
Printable Characters ANK, symbologies (JAN/UPC-E/ NW-7/Code-39/ITF/Code-128), OCRB, 128 non-standard characters
Character Fonts Kanji 12-dot 48/32 columns, 16-dot 36/24 columns, 24-dot 24/16 columns (columns shown for 80 mm wide paper and
58 mm wide paper, respectively)
Character Size Free double-width characters
Generating Method Black/white inversion, mixed character font printing
Card Slot PC Card Slot PC Card Type I/Type II (3.3 V/5.0 V specications)
* Wake on function available
SD Memory Card Slot SD Memory Card
Magnetic Card Reader _ISO 7811 Tracks, 1, 2, and 3 _ _
Power
Requirements
Main Power Lithium ion battery pack (DT-9723LIC)
Backup Power Lithium battery (installed inside the terminal)
Battery Life Main battery - Approx. 12.6 hours*,
* Backlight off, When the keys are pressed 20 times (30seconds) and continuous printing of 20 lines (font height 2mm
Alphabet and Numeric/30% of total digits) is carried out at four minute intervals.
Backup battery- Data retention (RAM) - 10 minutes (without main battery)
Clock - 2 weeks (without main battery)
Power Consumption DC 4.5 A/7.4-10 V
Operating
Environment
Temperature -20 to 50°C (5-35°C when printing on 2-ply paper or labels)
Humidity 10-80% RH (no condensation)
Dimensions and
Weight
Dimensions Approx. 80*/108**
(W) × 199.5*/265**
(D) × 28*/68** (H)
mm
(31/8'' / 41/4''W ×
7
7
/
8
'' / 10
3
/
8
''D ×
1
1
/
8
/ 2
5
/
8
''H)
Approx. 80*/108**
(W) × 229.5*/295**
(D) × 28*/68** (H)
mm
(31/8'' / 41/4''W ×
9'' / 11
5
/
8
''D ×
1
1
/
8
/ 2
5
/
8
''H)
Approx. 80*/145** (W) × 229.5*/295**
(D) × 28*/70** (H) mm
(31/8'' / 53/4''W × 9'' / 11
5
/
8
''D × 1
1
/
8
/
2
3
/
4
''H)
Approx. 80*/145** (W) × 199.5*/265**
(D) × 28*/70** (H) mm
(31/8'' / 53/4''W × 7
7
/
8
'' / 10
3
/
8
''D × 1
1
/
8
/
2
3
/
4
''H)
*; display part, **; printer part (All sizes exclude extruding parts.)
Weight Approx. 635 g
(22.4 oz)
Approx. 680 g
(24 oz)
Approx. 700 g
(24.7 oz)
Approx. 655 g
(23.1 oz)
Environment Drop Durability 1.2 m
Dust and Water Resistance Complies with IEC60529, level IP54
Clock Function Year, month, date, day, hour, minute; fully automated calendar

– 7 –
2-2. Part Name
1 SD Memory Card Slot Slot for inserting SD memory card.
2 Program Key (L) This key can be assigned any function available.
IT-3100M55E/M55E2/M55U/M56E/M56E2
The default settings are as follows. This key is used to read bar codes and 2D code.
3 Roll Paper Holder
Roll paper is placed in this holder. Use the optional Paper Holder when using a formed sheet paper.
4 Splash Protect Cover and
Paper Cutter
Printed roll paper is torn off here. The paper cutter is provided with a splash protect cover.
Open the cover when printing. The paper cutter is revealed when the cover is opened.
5 Power Key Press this key to turn the power on or off.
6 Indicator 1 (Left Side) This indicator is green when charging the battery pack is completed and red during charging.
Indicator 2 (Right Side) This indicator ashes or lights according to the settings of the application software.
7 Speaker Generates audio and buzzer tones.
8 Brightness Sensor This sensor detects the brightness of the surroundings. The display backlight and key back-
light can be controlled automatically according to programmed settings. Be careful not to inad-
vertently block this sensor.
9 LCD Panel/Touch Screen Displays text, operations, indicators and so forth. In addition, operations can be performed
and data can be input using the stylus provided.
10 Stroke Keys There are a total of 19 keys including function keys and numeric keys. Refer to "Key Func-
tions" on page 26 for further details.
Each numeral and symbol on the key buttons in the table above is backlit.
11
RS-232C Interface Connector
(M53E/M53E2/M54E/M54E2)
For connection of a bar code reader and so forth. Connect by opening the connector cover.
12 Program Key (R) This key can be assigned any function available.
IT-3100M55E/M55E2/M55U/M56E/M56E2
The default settings are as follows. This key is used to read bar codes and 2D codes.
13 Power Jack The AC adaptor is connected to this jack when charging the lithium
14 IR Port This is used for IR data communication with another Handheld Printer Terminal or with the
Bridge Satellite Cradle.
15 Battery Pack
Cover Lock Switch
Turn this switch when opening and closing the battery pack cover.
16 Battery Pack Cover Houses the battery pack inside.
17 PC Card Slot For connection of a separately sold PC card. Remove the cover to install a PC card.
18 Hand Strap Hook Hook the hand strap here.
19
14-pin Serial Interface Connector Provided for future use.
20 Power Terminals
Terminals for supplying power from the Bridge Satellite Cradle and Cradle-type Battery Charger.
21 Neck Strap Hooks Hook the neck strap here.
22 Magnetic Card Reader
(M54E/M54E2/M55E/M55E2/
M55U)
Magnetic cards are read by passing through this magnetic card reader.
Remove the cover to use.
23 Reset Switch Press to reset the Handheld Printer Terminal. Be careful not to press by mistake.
24
Screen Protect Cover Mounting Remove the screws when attaching the Screen Protect Cover.
25 C-MOS Imager
(M55E/M55E2/M55U/M56E/
M56E2/M56U)
Reads 1D bar code symbologies and stacked 2D code symbologies.
25
3
4
5
6
7
8
9
10
1
2
24
11
12
13
14
15
16
17
18
23
19
20
18
21
22

– 8 –
2-3. Key Functions
1 FnKey Thiskeyisusedtoswitchthecharacterinputmodeormakevarioussettingsincombi-
nationwithotherkeys,orstartupapre-registeredapplication.
2 NumericKeys Thesekeysareusedtoinputnumbersandletters.
3(CursorKey) Movesthecursortotheleft.
4(CursorKey) Movesthecursortotheright.Thisisalsousedtofeedpaperwhenpressedafter
pressingtheFnkeywhenprintingpaperisloaded.
5 - Thiskeyispressedwheninputtingahyphenorbar.
6 . Thiskeyispressedwheninputtingadecimalpoint.
7 C Thiskeyispressedwhencancelinganoperationandinput.
8 BS Thiskeyispressedwhendeletingthecharactertotheleftofthecursor.
9 ENT Thiskeyispressedwhenenteringaninput.
*Eachnumeralandsymbolonthekeybuttonsinthetableaboveisbacklit.

– 9 –
3. TECHNICAL INFORMATION
3-1. WIRING DIAGRAM
Back light
LCD
FPC
2D
Scanner
PCMCIA
CARD
PCMCIA
CONNECTOR
68pin
MAIN PCB
SD
CARD
Printer
FPC
FPC
FFC
DC Jack
FPC FFC
IrDA
Main
Battery MCR
Head
KEY PCB
LED
LED LED
Battery cover detect
MCR PCB
13pin
13pin
2pin 10pin
14pin
9pin 3pin
2pin
16pin
30pin
22pin
CN6 CN19
CN801
CN7
CN28 CN29 CN14 CN16
CN3
CN800
CN12
CN15
J1
CN24
CN22
CN11
CN13
CN20
9pin
45pin
12pin
4pin
14pin
16pin
6pin
3pin
Triger KEY
14pin I/F
FPC
Touch Panel FFC
FPC
FPC
8pin I/F Speaker
Paper
Sensor
Power
key
Sub Battery
Super
CAP
Illuminance
sensor

– 10 –
3-2. SYSTEM DIAGRAM
AC adaptor
AD-S42120AE
AC adaptor
AD-S42120AE
RS-422
PC
RS-422
USB
RS-232C
AC adaptor
AD-S42120AE
I/O box
HA-B61IO
Cradle-type
Battery Chaeger
HA-B30CJG
Bluetooth
Item
Single Battery charger
DT-9721CHGE
Lithium-ion battery pack
DT-9723LI
DT-9723LIC
Battery charger
car mount unit
HA-B34AT
Car plug code
DT-827CAC
I/O box
HA-B61IO
Credit card
PC card
SD card
AC Adaptor
for IT-3100
DT-9020ADP-GS
IT-3100
seies
Serial I/F RS-232C
Cross cable
HA-B80AX
Support device
IrDA Purinter
Bluetooth module
Ver1.2: IT-3100M53E/M54E/M55E/
M55U/M56E/M56U
Ver2.0: IT-3100M53E2/M54E2/
M55E2/M56E2
Power supply
terminal
IrDA 1.1
14pin
serial I/F
MCR
PCMCIA
SD crad
slot
Charge
connector

– 11 –
3-3. MAIN PCB VIEW
Symbol Description
CN2 ToBluetoothAntenna
CN3 FromTouchPanel
CN6 To2DScanner
CN7 SDCardSlot
CN11 FromPWPCB
CN12 To14pinI/F
CN13 To8pinI/F
CN14 ToMCR
CN15 FromTrigger,PowerFPC
CN16 FromKEYPCB
CN19 ToPrinter
CN20 ToPaperSensor
CN22 ToBackupbattery
CN24 ToSupperCapacitor
CN28 TobatteryTerminal(Red)
CN29 TobatteryTerminal(White)
CN800 ToLCD
CN801 PCMCIA SLOT
J1 DCJack
CN20
CN7
CN19
CN28
CN29
CN6
CN11
CN22
CN14
CN12
CN3
CN15
J1
CN13 CN2
CN801
CN24
CN16
CN800

– 12 –
3-4. COMPONENTS LOCATION ON THE MAIN PCB

– 13 –

– 14 –
4. TROUBLESHOOTING
4-1. Does not turn ON
4-2. Memory error occurs after booting IT-3100.
4-3. The diagnostic program cannot be loaded.
4-4. SDRAM NG
4-5. NAND-FROM NG
Memoryerrormayoccurwhen IT-3100 withanemptybackupbatteryisbooted.
Inthiscase,initializethememoryasindicatedonthedisplay.
Referto"4-12.PCMCIANG".
ReplacetheMAINPCBandcheckagain.
ReplacetheMAINPCBandcheckagain.
Check the voltage and
placement of the battery.
Check if LCD
connector and BL connector
are correctly inserted.
Check on the
detection SW.
MAIN PCB is
defective.
LCD connector and
BL connector are
not correctly
inserted.
Battery is defective or
incorrectly inserted.
Detection SW is
defective.
Replace the
MAIN PCB and
check again.
Replace the
Detection SW and
check again.
Continue check.
OK OK
NG NG
OK
NG

– 15 –
4-6. KEY/BUTTON NG
FFC/FPC
damaged?
Check the connection
of CN15 and CN16.
Check if keys are
correctly assembled.
Connector is loosely
connected.
Keys are not
correctly assembled.
MAIN PCB is defective.
OK Yes
NG No
No
OK
FFC/FPC is defective.
4-7. TOUCH PANEL NG
After replacing the TOUCH
PANEL, check again.
Check the connection
of CN3.
TOUCH PANEL
is defective.
Connector is loosely
connected.
MAIN PCB is defective.
OK
NG
OK
No
4-8. LCD NG
After replacing the LCD,
check again.
Check the connection
of CN5. LCD is defective.
Connector is loosely
connected.
MAIN PCB is defective.
OK
NG
OK
No

– 16 –
4-9. Scanner LED NG
FFC
damaged?
Check the connection
of CN11.
After replacing the
PW PCB, check again.
FFC is defective.
Connector is loosely
connected.
MAIN PCB is defective.
PW PCB is defective.
OK Yes
NG No
OK
NG
4-10. Sensor NG
AD3
NG?
CN11
AD4-6
NG?
AD0-2
NG?
After replacing the PR
PCB, check again.
MAIN PCB
is defective.
FFC is defective.
PW PCB is
defective.
Connector is
loosely
connected.
Printer is defective.
PR PCB is
defective.
CN19
After replacing
the Printer,
check again.
Yes
YesYes
Yes
OK
OK
OK
OK
No
No No
No
No
NG
NG
NG
NG
FFC
damaged?

– 17 –
4-11. Speaker NG
Check the connection
of CN11.
After replacing the
Speaker, check again.
FFC is defective.
Connector is loosely
connected.
MAIN PCB is defective.
Speaker is defective.
OK Yes
NG No
OK
NG
FFC
damaged?
4-12. PCMCIA Card NG
4-13. SD Card NG
4-14. Charge LED NG
Check the connection
of CN11.
Replace the PW PCB
and check again.
FFC is defective.
Connector is loosely
connected.
MAIN PCB is defective.
PW PCB is defective.
OK Yes
NG No
OK
NG
FFC
damaged?
ReplacetheMAINPCBandcheckagain.
ReplacetheMAINPCBandcheckagain.

– 18 –
4-15. IrDA NG
Check if the inspection
tools operate normally
Yes
No
MAIN PCB is defective.
PC setting is incorrect.
HA-B61IO is defective.
4-16. 8pin I/F NG
Check the connection
of CN13. SIF FPC is defective.
Connector is loosely
connected.
MAIN PCB is defective.
OK
NG
OK
No
Replace SIP FPC,
check again.
4-17. Bluetooth NG
MAIN PCB is defective.
Check the connection
of CN2.
Connector is loosely
connected.
OK
NG