TX-SR806/SA806
OPERATION CHECK-3
SPEAKER OUTPUT SENSOR AND THERMAL SENSOR
Te s t - _
Te s t - 4 - 0 0
Te s t - 4 - 3 7
C l e a r
Turn off
Te s t - 4 - 3 7
FM STEREO
Blinks
M a i n :
1 . 0 1 / 0 8 6 2 0 A
<Ex.>
<Ex.>
V: 0 1 5 F : x S : H
T: 0 4 3
C l e a r
Turn off
Output sensor (Speaker out AC voltage)
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.
2. Press GAME/TV button while " Test - _ " is displayed.
The unit will be in the state of " Test-4-00 ".
3. Repeatedly press TONE
+
button until " Test-4-37 " is displayed. DSP outputs 0 dBFs/1kHz audio signal to all power amplifiers.
4.
At this time, confirm that the red characters of " FM STEREO " is displayed and relays RL6901/RL6902 are switched off.
Te s t - 4 - 3 8
Te s t - 4 - 3 8
FM STEREO
5. Press TONE
+
button until " Test-4-38 " is displayed. DSP outputs 0 dBFs/1kHz audio signal to some power amplifiers.
6. At this time, confirm that the red characters of " FM STEREO " is displayed and relays RL6901/RL6902 are switched off.
7. Press STANDBY/ON button to finish.
[Procedure]
<Note>
No output. No input.
[When]
3. Exchange thermal sensor Q6380 or PC board ass'y (NAETC-9478).
Thermal sensor
1. Press and hold down DISPLAY button, then press STANDBY/ON button when the unit is powered ON.
The main microprocesor F/W version will be displayed only for 3 seconds.
2. Press TONE button while the version is displayed. The temperatures of the thermal sensors (Q6380) will be displayed.
3. Confirm that the displayed temperature is /-20 C from the ambient temperatures.
4. Press STANDBY/ON button to finish.
Unit is C
1. Exchange power transistors (Q6050 - 6056, Q6060 - 6066).
2. Exchange amplifier PC board ass'y (NAAMP-9477, NACLA-9493).
