OPERATION CHECK-1
SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)
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.
2. Press the VIDEO 3 button, while the characters of " Test - _ " are displayed.
The unit will be in the state of " Test-4-00 ".
3. Repeatedly press TONE
+
button until the characters of " Test-4-21 " are displayed.
[Procedure]
<Note>
No load. No input.
T e s t - _
T e s t - 4 - 0 0
[When]
1. Exchange power transistors (Q6050 - Q6054, Q6060 - Q6064).
2. Exchange amplifier PC board ass'y (NAAF-8911).
T e s t - 4 - 2 1
Check whether the operation starts and continues automatically as follows.
T e s t - 4 - 2 1
T e s t - 4 - 2 2
T e s t - 4 - 2 5
T e s t - 4 - 2 3
T e s t - 4 - 2 4
P r o t e c t O K
P r o t e c t O K
P r o t e c t
P r o t e c t O K
P r o t e c t O K
P r o t e c t O K
T e s t - 4 - 3 5
C l e a r
Turn off
Front L ch
Check
If all channels are OK, the characters of
" Test - 4 - 35 "
are displayed.
4. Press the STANDBY/ON button.
Front R ch
Check
Center ch
Check
Surround L ch
Check
Surround R ch
Check
Blinks
HT-R640
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TEL 13942296513 QQ 376315150 892498299