TX-SR606
OPERATION CHECK-4
POWER SUPPLY CONTROL
Test - _
Test - 4-00
Test - 4-36
Clear
Turn off
Blinks
Test - 4-36
Output sensor
[When]
Same as the Current detection check on "OPERATION CHECK-3".
[Procedure]
Notes : No output. No input.
1. Press and hold down CD button, then press ON/STANDBY 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-4-36 " 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.
5. Press + (TONE) button then " Test-4-37 " will be displayed.
6. 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.
7. Press ON/STANDBY button.
Thermal sensor
Same as the Thermal detection in "OPERATION CHECK-1".
Test - 4-37
Test - 4 - 36 : Front L, R, Center, Surround L ch check
Test - 4-37
Test - 4 - 37 : Surround L, R, Surround back L, R ch check
Condition to operate
The power supply voltage of +/-B1 under the following condition.
The state of "VOLH", "T", and "VH or VL" can be confirmed on the FL display. Refer to “OPERATION CHECK-1”.
Configuration
The power supply voltage of +/-B1 for power amplifier is changed by the relays (RL6901, 6902).
< 0.33
0.33 to 1.65
5 min.
< 60
VH
VL VL
VL
VOLH (V)
VOLH port of MPU
T ( C)
Thermal sensor
temperature
S1H+
S1H-
S1L+
S1L-
Q6707
RL6901
RL6902
D6903
D6901
++
+22V
+B1
-B1
FM STEREO
FM STEREO
SEC1H
Q701
MPU
(Main Microprocessor)
119
135
VOLH
To Power trans.
To Power amp.
section
THERMAL
Thermal sensor
136
FL
SR
SL
C
FR
SBL
SBR
Output sensor
RL6901, 6902
VH : high voltage
Off
ON
VL : low voltage
Operation of relay
Power amplifier
Q6380
1.65 <
5 sec.
VL
VL
Operation of power supply control (VH or VL)
60 <
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