Test E: The Subwoofer Is Inoperative/Does Not Operate Correctly - Audiophile

PINPOINT TEST E: THE SUBWOOFER IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - AUDIOPHILE

E1-E2:

E2-E4:

E5-E7:

E7-E9:

E9-E11:

E12:

Normal Operation
The subwoofer speakers are powered by a separate subwoofer amplifier. The enable/clip circuit SME23 (VT/RD) carries out 2 functions: to turn the subwoofer amplifier on, and to monitor an overload condition to the subwoofer amplifier. In the event of an overload, the audio unit clips the audio output signal to the subwoofer amplifier (heard as distortion). The subwoofer amplifier receives voltage through circuit CBP06 (WH/BU), and ground through circuit GD148 (BK/YE).

Possible Causes
- Fuse
- Circuit CBP06 (WH/BU) open
- Circuit GD148 (BK/YE) open
- Circuit RME01 (GY) open, short to ground or voltage
- Circuit RME02 (YE) open, short to ground or voltage
- Circuit RME22 (GN/WH) open, short to ground or voltage
- Circuit VME01 (GN/VT) open, short to ground or voltage
- Circuit VME02 (VT) open, short to ground or voltage
- Circuit VME22 (VT/GN) open, short to ground or voltage
- Circuit SME23 (VT/RD) open, short to ground or voltage
- Subwoofer speaker
- Subwoofer amplifier
- Audio unit