SONY XM7527
Instrukcja Serwisowa

SECTION 1 SERVICE NOTE
Clearing the Protector During Repairs
� OVER CURRENT : Detects overcurrent during output. � OFF SET : Detects DC offset at the speaker terminal. 1. Clearing the OVER CURRENT protector 1 When the position of the MODE switch (S801/power board) is set to HI-VOLTAGE : Cut the jumper wire JW065 of the amplifier board. 2 When the position of the MODE switch (S801/power board) is set to HI-CURRENT : Cut the jumper wire JW066 of the amplifier board. 2. Clearing the OFF SET protector � Cut the jumper wire JW024 of the amplifier board. 3. TEST TONE Function 1 Press the TEST TONE button (S805/amplifier board) with the power ON. The amplifier is normal if sound is produced from the speaker. 2 If no sound : Problem causer by incorrect connecttion of the power supply system or sperker system. : The signals input by the RCA cable before the amplifier system are abnormal. Adjustment Location: - POWER BOARD - (Component side)
S801 MODE

- AMPLIFIER BOARD - (Component side)
S805 VR201 JW024 JW065 JW066 VR101 TEST TONE

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