Operation Check; Speaker Protect; Dc Voltage Detection - Onkyo TX-SR604 Service Manual

OPERATION CHECK-1

SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)
[When]
1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066).
2. Exchange amplifier PC board ass'y (NAAF-8911).
[Procedure]
<Note>
No load. No input.
1. Press and hold down the CD button, then press the STANDBY/ON button while the unit is Power ON.
" Test - _ " is displayed only for 5 seconds.
T e s t - _
2. Press the VIDEO 3 button, while the characters of " Test - _ " are displayed.
The unit will be in the state of " Test-4-00 ".
T e s t - 4 - 0 0
3. Repeatedly press TONE
T e s t - 4 - 2 1
Check whether the operation starts and continues automatically as follows.
T e s t - 4 - 2 1
P r o te c t OK
T e s t - 4 - 2 2
P r o te c t OK
T e s t - 4 - 2 3
P r o te c t OK
T e s t - 4 - 2 4
P r o te c t OK
If all channels are OK, the characters of
T e s t - 4 - 3 5
4. Press the STANDBY/ON button.
C l e a r
Blinks
+
button until the characters of " Test-4-21 " are displayed.
Front L ch
Check
Front R ch
Check
Center ch
Check
Surround L ch
Check
" Test - 4 - 35 "
T es t - 4-25
Prot ec t OK
T es t - 4-26
Prot ec t OK
T es t - 4-27
Prot ec t OK
Prot ec t
are displayed.
Turn off
TX-SR604/604E/8460
Surround R ch
Check
Surround Back L ch
Check
Surround Back R ch
Check