Sharp GX20 Service Manual - Page 65

Camera does not function.

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13. Camera does not function. CONFIDENTIAL GX20 Does the camera flexible unit operate after replacement? NO Camera unit defective. YES Voltage of 2.5 V applied to TP211? NO Regulator IC208 or jumper (IC208 5 pin to TP211) defective. YES Voltage of 2.5 V applied to camera (CA1001) 2 pin? YES Voltage of 3.0 V applied to TP213? NO Jumper (CN101 8 pin to TP211) and CN101 defective. Defective disconnection of Camera unit. NO Regulator IC205 or Jumper (IC205 5 pin to TP213) defective. YES Voltage of 3.0 V applied to camera (CA1001) 41 pin? YES Voltage of 3.1 V applied to TP206? NO Jumper (CN101 12 pin to TP211) and CN101 defective. Defective disconnection of Camera unit. IC104 defective. NO NO Voltage of 3.0 V applied to IC206 1 pin? YES YES Regulator IC206 defective. Voltage of 3.1 V applied to camera (CA1001) 32 pin? YES Voltage of 13 V applied to TP412? NO Jumper (CN101 3 pin to TP206) and CN101 defective. Defective disconnection of Camera unit. IC402 or peripheral circuit defective. IC403 or control signal line defective. NO NO Is the strobe LED normally operating? YES YES IC402 or peripheral circuit defective. Voltage of 13 V applied to camera (CA1001) 30 pin? YES C184 and C411 defective. NO NO Are appearance and mounting of C184 and C411 properly given? YES Jumper (CN101 10 pin to TP412) and CN101 defective. Defective disconnection of Camera unit. Voltage of -7 V applied to TP413? IC402 or peripheral circuit defective. IC403 or control signal line defective. NO NO Is the strobe LED normally operating? YES To the next page YES IC402 or peripheral circuit defective. 2 - 59

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GX20
2 – 59
CONFIDENTIAL
13. Camera does not function.
Does the camera flexible unit operate after replacement?
Camera unit defective.
Voltage of 2.5 V applied to TP211?
Regulator IC208 or jumper (IC208 5 pin to TP211) defective.
Voltage of
2.5 V applied to camera (CA1001) 2 pin?
Jumper (CN101 8 pin to TP211) and CN101 defective.
Defective disconnection of Camera unit.
Voltage of
3.0 V applied to TP213?
Regulator IC205 or Jumper (IC205 5 pin to TP213) defective.
Voltage of
3.0 V applied to camera (CA1001) 41 pin?
Jumper (CN101 12 pin to TP211) and CN101 defective.
Defective disconnection of Camera unit.
IC104 defective.
Voltage of
3.1 V applied to TP206?
Voltage of 3.0 V applied to IC206 1 pin?
Regulator IC206 defective.
Voltage of
3.1 V applied to camera (CA1001) 32 pin?
Jumper (CN101 3 pin to TP206) and CN101 defective.
Defective disconnection of Camera unit.
IC402 or peripheral circuit defective.
IC403 or control signal line defective.
Voltage of
13 V applied to TP412?
Is the strobe LED normally operating?
IC402 or peripheral circuit defective.
C184 and C411 defective.
Voltage of
13 V applied to camera (CA1001) 30 pin?
Are appearance and mounting of C184 and C411 properly
given?
Jumper (CN101 10 pin to TP412) and CN101 defective.
Defective disconnection of Camera unit.
IC402 or peripheral circuit defective.
IC403 or control signal line defective.
Voltage of –7 V applied to TP413?
Is the strobe LED normally operating?
IC402 or peripheral circuit defective.
To the next page
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES