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KV-AR29T80C/AR29X80C
RM-W104
RM-W104
SECTION 5
SAFETY RELATED ADJUSTMENTS
[A BOARD]
5-1. CHECKING OCP OPERATION
1) Receive WHITE PATTERN
PICTURE : DYNAMIC
2) Connect 90ohm / 20W RESISTOR R511 between D505 an-
ode and GND.
3) Check if the voltage at D506 cathode goes over 4.6V.
4) Immediately after checking, the resistor has to be discon-
nected.
L505
R511
R512
C508
R514
D505
+B
Add resistor 90
Ω
/20W
5-2. CONFIRMATION OF V-PROTECTOR
1) Short D557.
2) Check if the voltage at D551 cathode goes over 4.6V.
3) Immediately after checking, the resistor has to be discon-
nected.
5-3. CHECKING POWER SUPPLY VOLTAGES
Feed the mono-scope or color bar siganal and confirm the
following voltages.
1) +B line voltage(135V)
Adjust R654.
Measure between C654 +ve & GND.
Specification: 135V
±
1.0 V
2) 12V line voltage
Measure between C661 +ve & GND.
Specification: 13.5 V
±
2.0 V
3) 8V line voltage
C662 +ve & GND.
Specification: 8.0V
±
0.5 V
4) 5V line voltage
C664 +ve & GND.
Specification: 5.05V
±
0.5 V
5) STBY-5V line voltage
C652 +ve & GND.
Specification: 5.0V
±
1.0 V
6) 3.3V line voltage
C657 +ve & GND.
Specification: 3.3V
±
0.15 V
7) FBT + 15V LINE
Measure line voltage bC557 & -C557 (GND)
Specification: 13.3V
±
0.5 V
8) FBT - 15V LINE
Measure line voltage between -C558 & +C558 (GND)
Specification: -14.9V
±
0.6 V
Содержание Trinitron KV-AR29T80C
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Страница 35: ...KV AR29T80C AR29X80C RM W104 RM W104 47 48 C VIDEO OUT D3 DYNAMIC FOCUS 2 3 A 1 B C 2 3 4 A 1 B ...
Страница 36: ... 49 KV AR29T80C AR29X80C RM W104 RM W104 H KEY IN 2 3 4 5 6 7 A 1 B ...
Страница 37: ... 50 KV AR29T80C AR29X80C RM W104 RM W104 J POWER SWITCH 2 3 A 1 B ...