Pioneer Elite PureVision PRO 1410HD, Руководство по обслуживанию

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Failure diagnosis of the Power HIC on the Common PKG
1
11
9
20
OK: Short-
circuited,
NG: Open
OK: Short-
circuited,
NG: Open
Failure diagnosis of the Scanning IC
Check with a tester the resistance value between any pins indicated as NEGA and POSI of the
connector in the photos below. If a positive and a negative pin of the connector on the Scanning
Relay PKGs are short-circuited and remains short-circuited even after the connectors on the
Scanning PKG and Scanning Relay PKG are disconnected, the Scanning IC on the Scanning Relay
PKG is in failure.
Failure diagnosis of the Common PKG
Glass fuses (F1 and F2) at
the upper-right corner of
the Common PKG
Fusible resistor (R101) at the
lower-right corner of the Common
PKG: Approx. 2.2
Ω
(1 W)
A
(13~16)
B
(23~26)
C
(28~31)
D
(58~62)
E
(53~56)
F
(47~51)
G
(42~45)
H
(37~40)
I
(32~35)
Check points
Check points
Between A and B
Between B and H
Between C and I
Between D and E
Between F and G
OK: k
Ω
or more,
NG: Short-circuited
Between any pins of
NEGA and POSI blocks
PH2311
NEGA NEGA
POSI POSI
NEGA NEGA
POSI POSI
Scanning Relay PKG
(upper connector)
Scanning PKG Scanning PKG
Scanning Relay PKG
(lower connector)
PH2311
(rear view)
Result:
OK: k
Ω
or more,
NG: Short-circuited
Note: A and D are ground.
7-3