Alpha Technologies Spectra Series - Manual (Page 42)

Preliminary Operating Instructions 42 of 62 AIP SERVICE NUMBER 1-800-863-3364
15.1 TROUBLESHOOTING
WARNING: USE EXTREME CAUTION WHEN WORKING INSIDE THE CHARGER OR WITH THE
CHARGING SYSTEM. DO NOT ATTEMPT TO WORK INSIDE THE CHARGER UNLESS YOU ARE A
QUALIFIED TECHNICIAN OR ELECTRICIAN. HIGH VOLTAGES APPEAR AT SEVERAL POINTS
INSIDE THE BATTERY CHARGER. DISCONNECT AND LOCK OUT BOTH AC AND DC POWER
FROM THE CHARGER AND MAKE SURE CAPACITORS IN CHARGER ARE DISCHARGED
BEFORE REMOVING ANY COMPONENT. CONTACT WITH LIVE COMPONENTS WITHIN THE
CHARGER COULD CAUSE ELECTRICAL SHOCK, SERIOUS INJURY, OR DEATH.
CONTROL BOARD OR DISPLAY SYMPTOMS
Symptom Possible
Cause
Recommended Action
1) Control
board display
or LED
problems. Defective A2
control board
or CC1 cable. If the charger is charging properly but the A2 control board has a problem, then
check the CC1 cable connections then replace the A2 control board. The
charger will charge properly without the A2 control board connected. If the
charger is not charging properly go to that symptom section.
2) Control
board display
blank. Bad CC1 cable
or connection. The control board receives power and information from the SCR driver board.
Check the CC1 cable connections between the two boards.
No DC voltage
to SCR driver
board . If charger has proper DC voltage at the TS3 DC output terminal strip and the
control board display is blank, the charger will need to be de-energized and the
following items checked. F2 fuse (see FIGURE 10.1) on the SCR driver board,
JE5-1 and JE5-6 wiring to TS3 terminal strip, and, if applicable, the ZD1 zener
diode on the 130 VDC output chargers.
3) Back light
not on display. Bad control
board. The control board display back light will not illuminate without good AC voltage
to the SCR driver board. If the "AC ON" LED is illuminated on the control
board, then replace the control board.
Bad CC1 cable
or connection. The control board receives power and information from the SCR driver board.
Check the CC1 cable connections between the two boards.
4) Buttons not
functioning. Buttons locked
out . Check button lockout jumper (J2) position. See FIGURE 10.2 and SECTION
10.2.8.
5) Wrong
display
voltage. Bad R3
resistors or
bad
connections. De-energize the charger and disconnect JE4 and JE5 cable edge connectors
from the A1 SCR Driver board. Measure the resistance from the charger TS3
DC Output Terminal Strip charger positive and negative to the JE5 pin 2 orange
and JE5 pin 4 blue wires. See FIGURE 15.4 for the proper resistance values.
With CB2 DC circuit breaker in the ON position measure the resistance from
the charger positive to JE4 pins 5 for near zero ohms.
If any of these measurements are bad, find the problem and fix it.
Bad A1 SCR
Driver board If no problem is found, reconnect the cables and restart the charger and verify
problem still exists. Replace the A1 SCR Driver board if problem still exists.
6) Wrong
display
current. Problem with
charger ID
circuit or SCR
driver board. Go to the DC settings menu (SECTION 11.3.3) and check for proper charger
type. See SECTION 15.4, Charger ID Testing SECTION, of manual. Verify
values and all connections to the SCR driver board. If all connections and
values are good, replace the SCR driver board
7) Wrong
charger type
(ID). Problem with
charger ID
circuit or SCR
driver board. See SECTION 15.4, Charger ID Testing SECTION, of manual. Verify values
and all connections to the SCR driver board. If all connections and values are
good, replace the SCR driver board.