LG / GOLDSTAR RH-7500B
Instrukcja Serwisowa

No 3.3V
YES

No 3.3V
YES

Is there about 3.8V at NO the IC154 pin1?
YES

Check or Replace the D122

Is there about 3.8V at NO the IC154 pin1?
YES

Check or Replace the D122

Is there about 3.3V~ 5V at the IC154 pin4?
YES

NO

Check the �PWR CTL �H��signal from µ-com

Is there about 3.3V~ 5V at the IC154 pin4?
YES

NO

Check the �PWR CTL �H��signal from µ-com

Check the IC154 and Replace

Check the IC154 and Replace

No 2.5V
YES

No 5.0V
YES

Is there about 3.8V NO at the IC152 pin1?
YES

Check or Replace the D122

Is there about 5.5V at the IC151 pin1?
YES

NO

Check or Replace the D124

Is there about 3.3V~ 5V NO at the IC152 pin4?
YES

Check the �PWR CTL �H��signal from µ-com

Is there about 3.3V~ 5V NO at the IC151 pin4?
YES

Check the �PWR CTL �H��signal from µ-com

Check the IC152 and Replace

Check the IC151 and Replace

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