TM 11-6130-392-34
Table 4-3. Troubleshooting Test Procedures Continued
Column 1
Column 2
Column 3
Test Procedure
Malfunction Indication
Reference or Instruction
(6) Set CHANNEL SELECT to 1. Adjust
a. Go to Test 7, para 4-12
a. No channel can be adjusted for 50 mA,
channel 1 CURRENT SET and FINE
but all channels have a reading of
ADJ for panel meter reading of 50
greater than 2 mA.
mA. Repeat for channels 2, 3, 4 and 5.
b. At least one channel can be adjusted for
b. Replace
50 mA and all channels have a reading
Check panel meter reading.
R5 if CH1 is bad
of greater than 2 mA.
R6 if CH 2 is bad
R7 if CH 3 is bad
R8 if CH 4 is bad
R9 if CH 5 is bad
c. At least one but not all channels have a
c. Replace T1, charging board(s) of bad
reading of less than 2 mA and voltage
channel(s) and fuse(s) of bad channel(s)
at A11-TP7 is > 100 VDC.
d. Send to depot for repair
d. At least one but not all channels has a
reading of less than 2 mA and voltage
at A11-TP7 is < 100 VDC.
e. All channels have a reading of less than
2 mA.
(1) Voltage at A6-TP2 is greater than
(1) Replace T1, A6-A10 and F1-F5.
100 VDC.
(2) Voltage at A6-TP2 is less than 20
(2) Go to Test 8, para 4-12
VDC.
(3) Voltage at A6-TP4 is greater than 7
(3) Go to Test 9, para 4-12
VDC and fuses F1 through F5 are
bad.
(4) Voltage at A6-TP4 is greater than 7
(4) Go to Test 10, para 4-12
VDC and fuses F1 through F5 are
good ,
(5) Find open between XA10-22 and
(5) Voltage at A6-TP4 is less than 7
VDC and voltage at A11-TP2 is
XA11-18
greater than 7 VDC.
(6) Find open between XA11-6 and
(6) Voltage at A6-TP4 is less than 7
XA12-31
VDC and voltage at A11-TP2 is less
(7) Set all CURRENT SET switches to
than 7 VDC.
200 mA position. Set all FINE ADJ
a. Go to Test 11, para 4-12
a. Each channel shows more than 50 mA
c o n t r o l s fully counterclockwise.
reading.
Rotate CHANNEL SELECT to each
b. Replace
b. At least one channel, but not all, reads
of 5 channels. Check current reading;
R5 if CH 1 50 mA
more than 50 mA.
to be less than or equal to 50 mA each
R6 if CH 2 50mA
of 5 channels.
R7 if CH 3 50mA
R8 if CH 4 50mA
(8) Set all CURRENT SET switches to
R9 if CH 5 50mA
700 mA position. Repeat same proce-
a. Go to Test 12, para 4-12
a. No channel has an indication of less
dure as in (6).
than 200 mA.
b. Go to Test 13, para 4-12
b. At least one but not all channels has an
(9) Set all CURRENT SET and FINE
indication of less than 200 mA.
ADJ controls for panel meter reading
Replace TB1-R10
No channel has a meter reading of 700 mA.
of 700 mA. Rotate CHANNEL SE-
LECT to each of 5 channels. Check
current reading; to be 700 mA.
(10) S e t C H A R G E T I M E H O U R S
R E M A I N I N G to read 1 8 . 8 . Press
Find open between XA12-33 and CB1-NO
Display not 18.8.
START TIME switch. Remove power
cable from 115 VAC input source. Use
stopwatch; time 10 seconds and recon-
nect power cable. Check display; to be
unchanged.
4-6
