Onkyo HT-R495 Service Manual

Diagnostic Function
5 4 3
2
1
6
D
C
A
B
D
C
A
B
5 4 3
2
1
6
TX-SR393/TX-SR494
HT-R398 / HT-R495
Protect Mode
The unit goes into standby automatically when detect the abnormal condition of thermal detection,
DC voltage detection or current detection. (e.g. TX-SR393 block diagram below)
BACLA-2673
BAAF-2690
BAETC-2691
BAPS-2674
BAPRC-2695
MPU
Q7009
VOLTAGE
DRIVE
RELAY
RL6501
(FL/FR)
Power amp.
(Front L)
Q6001
Q6021
SPRLF
THERMAL
DETECT
Q6800
POWER
TRANS.
T901
CURRENT
DETECT
Power
Supply
AC IN
PON_MAIN
Relay
RL9001
FUSE
F9002
SEC-1
(HIGH)
SEC-1
(LOW)
FUSE
F6901
F6902
RELAY
RL6911
RL6912
Power
Supply
(H)
(L)
(H)
or
(L)
PON_MAIN
SEC1H
IPRO
DC
DETECT
VPRO
VOLTAGE
DETECT
VOLH
VOLH
VPROTECT
IPROTECT
THERMAL
P6800A
P9002
P8002
P2800B
SUB
TRANS.
Power Supply
for STANDBY
VPRO: DC voltage detection
IPRO: Current detection
SPEAKER - OUT

Onkyo HT-R495 Specifications

General

Brand	Onkyo
Model	HT-R495
Category	Stereo Receiver
Language	English