Onkyo TX-SR804, Руководство по обслуживанию

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TX-SR804/804E
OPERATION CHECK-3
CONTROL OF POWER SUPPLY (SPEAKER OUTPUT SENSOR AND THERMAL DETECTOR)
T e s t - _
T e s t - 4 - 0 0
T e s t - 4 - 3 6
C l e a r
Turn off
T e s t - 4 - 3 6
FM STEREO
Blinks
V e r . 1 . 0 1 / 0 6 9 2 0 a
<Ex.>
<Ex.>
T : 2 5 C / 7 7 F
C l e a r
Turn off
Output Sensor
1. Press and hold down CD button, then press STANDBY/ON button while the unit is Power ON.
" Test - _ "
will be displayed only for 5 seconds.
2. Press VIDEO 3 button while
" Test - _ "
is displayed.
The unit will be in the state of " Test-4-00 ".
3. Repeatedly press TONE
+
button until " Test-4-36 "
is displayed.
4. At this time, confirm that the red characters of
" FM STEREO " is displayed.
And, confirm that the relays (RL6901 and RL6902) are turned off in 2 or 3 seconds. (FL+FR+C+SL check)
6. Press
STANDBY/ON
button.
[Procedure]
<Note>
No output. No input.
[When]
1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066).
2. Exchange power amplifier PC board ass'y (NAAF-8678, NAAF-8682).
3. Exchange thermal sensor PC board ass'y (NAETC-8680).
Thermal Detector
1. Press and hold down DISPLAY button, then press
STANDBY button when the unit is power ON.
The main microprocessor version will be displayed only for 3 seconds.
2. Press
TONE button while the version is displayed, then the temperature will be displayed.
3. Confirm that the displayed temperature is /-20 C from the ambient temperatures.
4. Press
STANDBY/ON
button.
T e s t - 4 - 3 7
5. Press TONE
+
button and confirm that
the red characters of " FM STEREO "
is displayed and
the relays (RL6901 and RL6902) are turned off in 2 or 3 seconds as well as 4. (C+SR+SBL+SBR check)
FM STEREO