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There are currently no product reviews.
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Acurate informations inside the SM and I could repair my old Sansui SC-3330 without any problems. Thanks.
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I used it to repair a NAD 7030, but unfortunately, the 7045 is different !
But documentation was useful.
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Content A4 and A3 format pages. Exactly what I needed to restore my old receiver.
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Content A4 and A3 format pages. Exactly what I needed to restore my old receiver.
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Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this receiver.
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7.1.2 Protection Circuit
DC detection
Detection method
XPROTECT port (A/D)R397: 56 K-ohms Less than 0.6-0.8 Vdd 2.8 sec after Mute: On Speaker Relay: Off Shifting to STBY after 3 sec "AMP ERR" flashes for 3 sec Hold the STANDBY key pressed for 10 sec. The unit will recover if the duration of detection is 3 sec or less.
B A
Detection start time Process
Display Recovery Remarks
Overload detection
Detection method
XPROTECT port (A/D)R363: 27 K-ohms 0.4-0.6 Vdd 2.8 sec after Mute: On Speaker Relay: Off Shifting to STBY after 3 sec "OVERLOAD" flashes for 3 sec Press the STANDBY key.
C
Detection start time Process
Display Recovery Remarks
Fan (temperature) and short-circuit of the power supply circuit
Detection method
XPROTECT port (A/D) 0.4 Vdd or less 1.0 sec after Mute: On Speaker Relay: Off Shifting to STBY No display Hold the STANDBY key pressed for 10 sec.
Detection start time Process
D
Display Recovery Remarks
Fan stop
Detection method
XPROTECT port (A/D) 0.4 Vdd or less 1.0 sec after Mute: On Speaker Relay: Off Shifting to STBY No display Hold the STANDBY key pressed for 10 sec.
E
Detection start time Process
Display Recovery Remarks
F
VSX-C501-S
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