Veikong gpd 515/g5 Startup Manual page 228

TROUBLESHOOTING C H A R T 6 . 1 5
NO DIGITAL OPERATOR DISPLAY
NO
DISPLAY
230/460
ON
NO
L1, L2, L3?
YES
CHARGE
NO
LAMP
ON?
YES
IS VOLTAGE
NO
BETWEEN
TERM. 1 & 11
≈ 24 VDC?
YES
IS VOLTAGE
NO
BETWEEN
TERM. 15 & 17
+15 VDC?
YES
CHECK ALL
CONNECTORS,
EXCHANGE
OPERATOR /
CABLE
APPLY
POWER
DAMAGED PRECHARGE
RESISTOR, INPUT
DIODES, OR OUTPUT
TRANSISTORS
IS VOLTAGE
NO
BETWEEN
OR TERM. 15/17
+15 VDC?
EITHER CONTROL CARD
OR GATE DRIVE IS
FAULTY
6-26
REPLACE
GATE DRIVE
BOARD