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Sharp GX30 Service Manual - Page 52

[2] Test points, MAIN PWB-A, FRONT SIDE

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GX30 [2] Test points MAIN PWB-A (FRONT SIDE) CONFIDENTIAL TP705 TP720 TP729 TP730 TP709 TP710 TP711 TP737 TP731 TP721 TP734 TP723 TP724 TP714 TP712 TP717 TP713 TP736 TP728 TP702 TP701 TP727 TP738 TP735 TP722 TP716 TP715 TP706 TP733 TP707 TP732 TP No. TP701 TP702 TP705 TP706 TP707 TP709 TP710 TP711 TP712 TP713 TP714 TP715 TP716 TP717 TP720 TP721 Figure 89 TEST POINT Signal name SP1 SP2 VCCD (2.5V) Terminal for APPLICATION POWER adhesion check 1 Terminal for APPLICATION POWER adhesion check 2 VDD6 (3.1V) Backlight (LED+) Backlight (LED-) CAMCLK 13MHzCLK VLCD (1.8V) Terminal for LCDC adhesion check 1 Terminal for LCDC adhesion check 2 VOUT (External Display) VDD2 RECIVER_OUTN TP No. TP722 TP723 TP724 TP727 TP728 TP729 TP730 TP731 TP732 TP733 TP734 TP735 TP736 TP737 TP738 Signal name RECIVER_OUTP Terminal for LCDC adhesion check 3 Terminal for LCDC adhesion check 4 LIGHT1 LEDCTL LEDR LEDG LEDB Power supply for camera (+15V) Power supply for camera (-8V) RECIVER_OUTN RECIVER_OUTP AVDD (3.1V) VPLUS2 Connector connection check terminal 2 - 44

Section	Page
FRONT	1
SERVICING CONCERNS	2
GENERAL DESCRIPTION	3
[1] Specifications	3
[2] Names of parts	4
[3] Operation manual	5
ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE	9
[1] SHARP Program Support Tool (SPST)	9
1. System requirements	9
2. Introduction	9
3. Adjustments for GX30	12
4. Functions	13
5. Other tests	51
[2] Test points	52
[3] Troubleshooting	56
1. Power is not turned on.	56
2. Voice transmission/recording is impossible.	58
3. No voice is heard from the earpiece.	60
4. Battery does not charge.	62
5. Vibrator does not work.	62
6. Clock Settings are reset.	63
7. Speaker does not work.	63
8. MP3 cannot be played.	64
9. Video/Voice Recorder playback is impossible.	65
10. Back Light does not turn on.	66
11. Out of range and incoming/outgoing calls are impossible.	67
12. The display does not appear on Main Display.	68
13. The display does not appear on External Display (in 65K color mode).	69
14. Pictures cannot be taken.	70
15. Flash light does not work.	71
16. SIM card is not recognized.	72
17. SD (Memory) card is not recognized.	73
18. IrDA (Infrared) communication is not possible.	74
19. Bluetooth communication is impossible.	75
20. USB connection is impossible.	76
DISASSEMBLY AND REASSEMBLY	77
[1] Servicing Concerns	77
1. For disassembling	77
2. For reassembling	77
[2] Disassembly and reassembly	80
DIAGRAMS	84
[1] Block diagram	84
SCHEMATIC DIAGRAM AND WIRING SIDE OF P.W.BOARD	88
[1] Notes on schematic diagram	88
[2] Types of transistor and LED	88
[3] Waveforms of circuit	89
[4] Schematic diagram/Wiring side of P.W.Board	92
OTHERS	121
[1] Function table of IC	121
[2] Function table of Camera	147
[3] Function table of Display	148
PartsGuide	151
[1] INTEGRATED CIRCUITS	152
[2] TRANSISTORS	152
[3] DIODES	152
[4] FILTERS	153
[5] COILS	153
[6] VARIABLE RESISTORS	153
[7] VIBRATORS	153
[8] THERMISTOR	153
[9] ARRAY PARTS	153
[10] CAPACITORS	154
[11] RESISTORS	156
[12] OTHER CIRCUITRY PARTS	159
[13] CABINET PARTS	160
[14] ACCESSORIES/PACKING PARTS	163

Match case Limit results 1 per page

GX30

2 – 44

CONFIDENTIAL

[2] Test points

Figure 89

TEST POINT

TP No.

Signal name

TP No.

Signal name

TP701

SP1

TP722

RECIVER_OUTP

TP702

SP2

TP723

Terminal for LCDC adhesion check 3

TP705

VCCD (2.5V)

TP724

Terminal for LCDC adhesion check 4

TP706

Terminal for APPLICATION POWER adhesion check 1

TP727

LIGHT1

TP707

Terminal for APPLICATION POWER adhesion check 2

TP728

LEDCTL

TP709

VDD6 (3.1V)

TP729

LEDR

TP710

Backlight (LED+)

TP730

LEDG

TP711

Backlight (LED–)

TP731

LEDB

TP712

CAMCLK

TP732

Power supply for camera (+15V)

TP713

13MHzCLK

TP733

Power supply for camera (–8V)

TP714

VLCD (1.8V)

TP734

RECIVER_OUTN

TP715

Terminal for LCDC adhesion check 1

TP735

RECIVER_OUTP

TP716

Terminal for LCDC adhesion check 2

TP736

AVDD (3.1V)

TP717

VOUT (External Display)

TP737

VPLUS2

TP720

VDD2

TP738

Connector connection check terminal

TP721