Harman Kardon AVR 4550 User manual

AVR 4550 Audio/VideoReceiver
SERVICE MANUAL
AVR 4550
ready
LOGIC 7
VMAx
Power for the Digital Revolution™
®

AVR325/525 Alignment spec. rev01.
1. MAIN B'D
: 5 Min. After power on, please set up Bias as below,
Front Left > use RV71, set P401 as 23mV +2mV/- 1mV.
Surr Left > use RV73 then set P303 as 23mV +2mv/-1mV.
Front Right > use RV72 make P402 to 23mV +2mV/-1mV.
Surr Right > use RV73 then make P303 to 23mV +2mV/-1mV.
P401 FRONT L-CH P303 SURROUND L-CH

RV71 FRONT L-CH RV73 SURROUND L-CH
P402 FRONT R-CH P304 SURROUND R-CH

RV72 FRONT R-CH RV74 SURROUND R-CH

2. BACK SURROUND B'D
: 5 Min. After power on, please set up Bias as below,
SBL > use VR31 then set P301 as 23mV +2mv/-1mV.
Center > use VR41 make P401 to 23mV +2mV/-1mV.
SBR > use VR51 then make P501 to 25mV +2mV/-1mV.
P301 VR31 BACK SURROUND L-CH P401 VR41 CENTER-CH

P501 VR51 BACK SURROUND R-CH

avr525_FRONT-MP.sch-1 - Tue Oct 01 12:06:27 2002

avr525_VIDEO_MP.sch-1 - Tue Oct 01 12:04:43 2002