TX-SR304/304E OPERATION CHECK-1
SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)
[When] 1. Exchange power IC (Q6001, Q6002). 2. Exchange amplifier PC board ass'y (NAAF-8745). [Procedure] <Note> No load. No input. 1. Press and hold down CD button, then press STANDBY/ON button while the unit is powered on. " Test - _ " is displayed only for 5 seconds.
Test - _
Blinks
2. Press VIDEO 3 button while the characters of " Test - _ " are displayed. The unit will be in the state of " Test-4-00 ".
Test - 4-00
3. Repeatedly press TONE+ button until the characters of " Test-4-19 " are displayed.
Test - 4-19
Check whether the operation starts and continues automatically as follows.
Test - 4-19 P rot ect OK Test - 4-20 P rot ect OK Test - 4-21 P rot ect OK
Center ch Check Front R ch Check Front L ch Check
Te s t - 4 - 2 2 P ro te c t O K T e s t - 4 -2 3 P r o te c t O K
Surround L ch Check
Surround R ch Check
If all channels are OK, the characters of " Test-4-29 " are displayed.
