Sharp TM200 Service Manual - Page 37

Confidential, Clock Setting Are Reset., Speaker Does Not Work.

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CONFIDENTIAL 6. CLOCK SETTING ARE RESET. Is 2.5 V or more applied to TP168 with a battery in the handset? YES Is 1.5 V or more applied to TP167 without a battery in the handset ? YES X101, R169, C174, and C176 are defective. The holder is installed improperly. NO NO Is back-up battery holder properly installed to SD/SIM FPC? YES • The remaining power of back-up battery is insufficient. • Back-up battery is defective. • Back-up battery holder is defective. • SD/SIM FPC is broken, or CN104 is defective. • R254 is defective. NO IC103 is defective. 7. SPEAKER DOES NOT WORK. * When ring tones sound, but keypad tones do not, "Keypad Tones" is set to Off. * When Ringer Volume is set to "Silent": · Voice Recorder playback sound is not produced. · Playback sound of Video and MP3 can be heard by increasing the volume during playback. Are speaker terminals in contact with the land? YES Is the impedance between speaker terminals approx. 8 ohms? YES Is the signal sent to TP701, TP702, or speaker contact pad? NO Is the signal sent to CN103 pins 3 and 4? NO Is VBAT voltage applied to IC105 pin 15? YES Is approx. 3 V applied to IC105 pins 7 and 32? YES Is the signal sent to IC105 pin 12? NO IC105 or the control line to IC106 is defective. NO NO YES YES NO NO YES Speaker is defective. Speaker is defective. Speaker is defective. The camera relay FPC, CN103, or CN701 is defective. Or the camera is in a poor contact with CN103 and CN701. R139 is defective. R158 is defective. R145 and R146 are defective, or IC105 is defective. TM200 1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE 2 - 33

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TM200
1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
2 – 33
CONFIDENTIAL
6. CLOCK SETTING ARE RESET.
7. SPEAKER DOES NOT WORK.
The holder is installed improperly.
Is 2.5 V or more applied to TP168 with a battery in the hand-
set?
Is back-up battery holder properly installed to SD/SIM FPC?
• The remaining power of back-up battery is insufficient.
• Back-up battery is defective.
• Back-up battery holder is defective.
• SD/SIM FPC is broken, or CN104 is defective.
• R254 is defective.
Is 1.5 V or more applied to TP167 without a battery in the
handset ?
IC103 is defective.
X101, R169, C174, and C176 are defective.
NO
NO
YES
YES
NO
YES
* When ring tones sound, but keypad tones do not, “Keypad Tones” is set to Off.
* When Ringer Volume is set to “Silent”:
· Voice Recorder playback sound is not produced.
· Playback sound of Video and MP3 can be heard by increasing the volume during playback.
Are speaker terminals in contact with the land?
Speaker is defective.
Is the impedance between speaker terminals approx. 8 ohms?
Speaker is defective.
Is the signal sent to TP701, TP702, or speaker contact pad?
Speaker is defective.
Is the signal sent to CN103 pins 3 and 4?
The camera relay FPC, CN103, or CN701 is defective. Or the
camera is in a poor contact with CN103 and CN701.
Is VBAT voltage applied to IC105 pin 15?
R139 is defective.
Is approx. 3 V applied to IC105 pins 7 and 32?
R158 is defective.
Is the signal sent to IC105 pin 12?
R145 and R146 are defective, or IC105 is defective.
IC105 or the control line to IC106 is defective.
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO