Trouble In H.v Sync - NEC MultiSync V920 Service Manual

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6. TROUBLE IN H. V SYNC
TROUBLE IN
HOR. OR VER. SYNC
YES
CHECK
CONNECTOR S701
(PIN6,7), SIGNAL
YES
CHECK
U701(PIN 39,40)
H/V SYNC.
SIGNAL
YES
CHECK
U701(PIN 32,33)
H/V SYNC.
SIGNAL
YES
CHECK
U701(PIN 1, 2)
YES
TROUBLE IN
U301
NO
NO
U701(PIN 5)
NO
U701 (PIN 7, 8)
YES
FREQ.12MHz
TROUBLE IN
NO
H.V SIGNAL LINE
R301, R302, C706,
C301, C302
23
TROUBLE IN
SIGNAL CABLE
TROUBLE IN
H/V SYNC LINE &
Q701, Q702
CHECK
VOLTAGE
5V?
YES
CHECK
TROUBLE IN
NO
5V LINE
TROUBLE IN
NO
X701, U701

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This manual is also suitable for:

Accusync 90Multisync v921-1Accusync 50mMultisync 95

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