Sharp TM200 Service Manual - Page 35

Confidential, No Voice Is Heard From The Earpiece.

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CONFIDENTIAL 3. NO VOICE IS HEARD FROM THE EARPIECE. Phone Is the signal sent to the contact terminal of the earpiece? YES NO Is the signal sent to CN103 pins 17 and 18? YES NO Is the signal sent to vsGNDs at both ends of C132? YES NO Is 2.7 or more voltage applied to R192 (IC106 pin 89 side)? NO YES Is approx. 1.2 V applied to IC103 pins 59 and 63? NO YES IC103 or IC106 is defective. Hands free kit (monaural headset) Replace the hands free kit. Is the signal sent ? YES NO Is the signal sent to JK101 pin 3? YES NO Is the signal sent to TP121? YES NO Is the signal sent to the positive pole of C107? YES NO Is the signal sent to IC103 pin 60? YES NO Is the voltage 0 V on R192 (IC106 pin 89 side) ? NO YES Is approx. 1.2 V applied to IC103 pin 60? NO YES IC103 or IC106 is defective. The built-in earpiece is defective, or in a poor contact with TP734 or TP735. The camera relay FPC, CN103, or CN701 is defective. Or the camera is in a poor contact with CN103 and CN701. L107, L108, C115, and C120 are defective. R192 is defective. (Headset mode is set.) IC103 is defective. Hands free kit is defective. Jack JK101 is defective, or the jack plug is in a poor contact with hands free kit. L103 is defective. C107, C103, and C106 are defective. R124 is defective. Jack JK 101 is defective, or the jack plug is in a poor contact with hands free kit. (Handset mode is set.) IC103 is defective. Hands free kit (stereo headset) - Option Is the stereo headset the one specified by Sharp? YES Is R-ch only the channel that does not send signals? NO Replace the hands free kit. Is the signal sent ? NO Is the signal sent to JK101 pin 3? NO Is the signal sent to TP121? NO Is the signal sent to the positive pole of C107? NO Is the signal sent to IC103 pin 60? NO Is the voltage 0 V on R192 (IC106 pin 89 side)?ɹ YES Is approx. 1.2 V applied to IC103 pin 60? YES IC103 or IC106 is defective. The headset cannot be used. (It works as a monaural headset.) NO NO Is the plug a 6 pole type with a ring? YES YES B (NEXT PAGE) YES Hands free kit is defective. YES Jack JK101 is defective, or the jack plug is in a poor contact with hands free kit. YES L103 is defective. YES C107, C103, and C106 are defective. YES R124 is defective. NO Jack JK 101 is defective, or the jack plug is in a poor contact with hands free kit. (Handset mode is set.) NO IC103 is defective. TM200 1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE 2 - 31

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TM200
1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
2 – 31
CONFIDENTIAL
3. NO VOICE IS HEARD FROM THE EARPIECE.
Phone
Is the signal sent to the contact terminal of the earpiece?
The built-in earpiece is defective, or in a poor contact with
TP734 or TP735.
Is the signal sent to CN103 pins 17 and 18?
The camera relay FPC, CN103, or CN701 is defective. Or the
camera is in a poor contact with CN103 and CN701.
Is the signal sent to vsGNDs at both ends of C132?
L107, L108, C115, and C120 are defective.
Is 2.7 or more voltage applied to R192 (IC106 pin 89 side)?
R192 is defective. (Headset mode is set.)
Is approx. 1.2 V applied to IC103 pins 59 and 63?
IC103 is defective.
IC103 or IC106 is defective.
Hands free kit (monaural headset)
Replace the hands free kit. Is the signal sent ?
Hands free kit is defective.
Is the signal sent to JK101 pin 3?
Jack JK101 is defective, or the jack plug is in a poor contact
with hands free kit.
Is the signal sent to TP121?
L103 is defective.
Is the signal sent to the positive pole of C107?
C107, C103, and C106 are defective.
Is the signal sent to IC103 pin 60?
R124 is defective.
Is the voltage 0 V on R192 (IC106 pin 89 side) ?
Jack JK 101 is defective, or the jack plug is in a poor contact
with hands free kit. (Handset mode is set.)
Is approx. 1.2 V applied to IC103 pin 60?
IC103 is defective.
IC103 or IC106 is defective.
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
Hands free kit (stereo headset) - Option
The headset cannot be used. (It works as a monaural headset.)
Is the stereo headset the one specified by Sharp?
Is the plug a 6 pole type with a ring?
Is R-ch only the channel that does not send signals?
Replace the hands free kit. Is the signal sent ?
Hands free kit is defective.
Is the signal sent to JK101 pin 3?
Jack JK101 is defective, or the jack plug is in a poor contact
with hands free kit.
Is the signal sent to TP121?
L103 is defective.
Is the signal sent to the positive pole of C107?
C107, C103, and C106 are defective.
Is the signal sent to IC103 pin 60?
R124 is defective.
Is the voltage 0 V on R192 (IC106 pin 89 side)?
Jack JK 101 is defective, or the jack plug is in a poor contact
with hands free kit. (Handset mode is set.)
Is approx. 1.2 V
applied to IC103 pin 60?
IC103 is defective.
IC103 or IC106 is defective.
NO
NO
YES
YES
YES
B
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
(NEXT PAGE)