Pioneer PDP-42A3HD Service Manual page 121

5
7-2)Symptom:No Picture. (Priming doesn't flash if W-X
erminals are short-circuited.)
Cause/Countermeasure: No Diode
]Exchange High Voltage
characteristic
Board.
High Voltage Board; Surface
PH2401F
5
6
High Voltage Board; Reverse
X
(112)
W
(109)
V
(107)
T
(99~103)
Checkpoints
S
(93~96)
R
(91)
Q
(86~89)
P
(81~84)
O
(76~78)
N
(71~74)
M
(66~69)
L
(61~64) OK: Diode characteristic
NG: Other than above
K
(57~59)
PDP-42A3HD
6
7
PH2401F
A-D M-L
A-E N-P
B-D O-P
C-D Q-R
E-R R-S
F-N R-T
G-M S-T
H-I T-V
I-J W- X
K-L
7
8
A
A
(1~4)
B
(6~9)
C
(10~13)
D
(15~18)
B
E
(24)
F
(33~35)
G
(39~40)
H
C
(49~50)
I
(53)
J
(55~56)
D
E
F
121
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