Onkyo HT-R430 Service Manual page 4

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OPERATION CHECK-1
SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)
[When]
1. Exchange power transistors (Q6050 - Q6065).
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.
2. Press the VIDEO 3 button, while the character of " Test - _ " is displayed.
Unit will be in the state of " Test-4-00 ".
3. Repeatedly press TONE
Checking the operation starts automatically as follows.
TE
L 13942296513
If all channel are OK, the character of
4. Press the STANDBY/ON button.
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T e s t - _
Blinks
T e s t - 4 - 0 0
+
button until the character of " Test-4-21 " is displayed.
T e s t - 4 - 2 1
T e s t - 4 - 2 1
Front L ch
Check
P ro te c t OK
T e s t - 4 - 2 2
Front R ch
Check
P r o te c t OK
T e s t - 4 - 2 3
Center ch
Check
P r o te c t OK
T e s t - 4 - 2 4
Surround L ch
Check
P r o te c t OK
" Test - 4 - 35 "
T e s t - 4 - 3 5
C l e a r
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2 9
8
T es t - 4-25
Q Q
3 6 7 1 3 1 5
Prot ec t OK
T es t - 4-26
Prot ec t OK
Prot ec t
is displayed.
Turn off
co
.
9 4 2 8
0 5 8 2 9 Surround R ch 9 4 2 8
Check
Surround Back ch
Check
m
HT-R430
9 9
9 9