Adjustment - Pioneer VSX-908RDS-HY Service Manual

6. ADJUSTMENT

6.1 IDLE CURRENT ADJUSTMENT
• CAUTION : Heatsink's DC level is equal to +B or -B.
Don't touch them or you will be electricary shocked.
1. Decrease the level of the Adjustment Variable resistors (VR) for the channel to be adjusted. ( Turn counterclockwise.)
2. Set the power switch to ON.
3. Connect the DC voltmeter as shown below and adjust VRs in step No. order so that voltages become 16mV
4. Ages for seven minutes.
5. Readjust in step No. order so that the voltages become 11.5mV ± 1mV (10.5 to 12.5mV). Adjustment is completed.
Step
Adjustment VR Adjustment ch
No.
VR2601
1
VR2501
2
VR2541
3
VR2521
4
5 VR2621
OUTPUT-SR ASSY
OUTPUT-FR ASSY
VL-TERMINAL ASSY
OUTPUT-C ASSY
OUTPUT-FL ASSY
OUTPUT-SL ASSY
SL ch
FL ch
C ch
FR ch
SR ch
Heat Sink –B
VR2621
VR2521
VR2541
VR2501
VR2601
Front side
VSX-908RDS, VSX-908RDS-G
+4mV
–0mV
Heat Sink +B
5
4
3
2
1
DC Voltmeter
.
79