Tech Tip Hktt2003-01 - Harman Kardon AVR230 Service Manual

AVR230
harman/kardon
Troubleshooting tips and solutions to common service problems
For models: AVR7000/7200/8000
AVR100/200/300/500
AVR110/210/310/510
AVR120/220/320/520
AVR125/225/325/525
AVR130/230/330/430/630
DPR1001
HK3370/3470/3375/3475
Subject: Backup Memory on AVR/DPR/HK series receivers
In the event of the complaint: "the receiver is losing its memory (any programmed system settings)
when the unit is turned off, or after the unit is unplugged (briefly*)":
Check and replace:
Model
AVR7000
AVR7200
AVR8000
AVR100/200
AVR300
AVR500
AVR110/210/310/510
AVR120/220/320/520
AVR125/225
AVR325/525
AVR130/230/330
AVR430/630
DPR1001
HK3370/3470
HK3375/3475
* After approximately two weeks of being disconnected from AC supply, even a normally functioning receiver may
lose any programmed settings and switch to default settings.
Designator Location
C730 Front PCB
C106 Front PCB
C726 Front PCB
C412 Front PCB
C906 Front PCB
C906 Front PCB
C216 Front PCB
C734, C885 Front PCB
C106 Front PCB
BAT1 Front PCB
C657 DSP PCB
BC601 Main PCB
C301 Front PCB
C301 Front PCB
TECH TIPS
TIP# HKTT2003-01 Rev1
Description
0.047 Farad 5.5v capacitor
0.047 Farad 5.5v capacitor
0.047 Farad 5.5v capacitor
0.047 Farad 5.5v capacitor
0.1Farad 5.5v capacitor
0.1Farad 5.5v capacitor
0.047 Farad 5.5v capacitor
two 0.1F capacitors in parallel
0.047 Farad 5.5v capacitor
3.6v Battery
0.047 Farad 5.5v capacitor
0.1Farad 5.5v capacitor
0.1Farad 5.5v capacitor
0.1Farad 5.5v capacitor
17
harman/kardon
Part number
# 55134360 or
# J3432147324X
# 55134360
# 55230310NR or
# 55134360
# CEGT-B473J-0J0
# J4433210421X
or # P10791-ND
# J4433210421X
or # P10791-ND
# 55134360
# BCESOHD104
# 55134360
# HABGP40BVH3A3H
# CEZXA0479MN-5
# CEGT-B104J-0J0
# CEGT-B104J-0J0
# CEGT-B104J-0J0