Onkyo TX-SR573 Service Manual page 4

OPERATION CHECK-1
SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)
[When]
1. Exchange power transistors (Q6050 - Q6066).
2. Exchange amplifier PC board ass'y (NAAF-8523).
[Procedure]
<Note>
No load. No input.
1. Press and the hold down the CD button, then press the STANDBY/ON button when the unit is Power ON.
" Test - _ " is displays it only for 5 seconds.
T e s t - _
2. Press the VIDEO 3 button, while the character of " Test - _ " is displayed.
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
Checking the operation starts automatically as follows.
T e s t - 4 - 2 1
P ro 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 channel are OK, the character of
T e s t - 4 - 3 5
4. Press the STANDBY/ON button.
C l e a r
Blinks
button until the character of " Test-4-21 " is 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
is displayed.
Turn off
TX-SR573
Surround R ch
Check
Surround Back L ch
Check
Surround Back R ch
Check