Hitachi 46W500 Training page 142

A
CHECK DCU input (PDG)
Is Voltage at Pin 4 +5V?
(Pin 2 -5V?)
OK
CHECK DCU input (PDG)
Pin 16 (V BLK)...*3
Pin 14 (H BLK)...*4
OK
CHECK
DCU
HC2191 p/n
CS00731
(*Fig 1) PDC Connector
Pin 20 (RH)
Pin 17 (GH)
Pin 14 (BH)
16 ~ 17 (ms)
Vpp = 2~5 (V)
NG
NG
ALSO CHECK: DK53 and IK02
(*Fig 2) PDC Connector
Pin 19 (RV)
Pin 16 (GV)
Pin 13 (BV)
GND
16 ~ 17 (ms)
CHECK SW +6.3V Line
(+5V)
I906, C938, IK01
CHECK SW-7V Line
(-5V) D923, C940, C941
QK01, CK04, CK05
DEFLECTION CIRCUIT
(V Blk)
Vertical Ouput V. Blk.
Produced from pin 11 of I601.
DEFLECTION CIRCUIT
(H Blk)
Horz. Deflection H. Blk.
Produced from pin 7 of T701 and Q706.
(*Fig 3) PDG Pin 16 (V. BLK)
(*Fig 4) PDG Pin 14 (H.
PPD4 pin 4
PPD4 pin 7
CHECK
CHECK
Vpp = 4~5 (V)
16 ~ 17 (us)
BLK)
Vpp = 4~5 (V)
28 ~ 30 (us)
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