Publication Number 53719. Issue 3, April 2012
SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
Page 65
Table 4. Fault Finding Chart (Continued)
SYMPTOMS
POSSIBLE CAUSES
SECT.
10.Repeater display faulty:
a.
Backlighting but no
graphics displayed
b. No backlighting
11. Keys or caption strips
not
illuminated
(keyboard
functions
correctly).
12. Keys inoperative
13. Memory module not
recognised.
14. Difficult
to
insert
or
withdraw
a
memory
module.
15.Smart card not accepted.
16.No RLAN comms.
a. Display data cable assembly faulty
(PLG) on Keyboard PCB.
b. Control board faulty.
c. Graphic display faulty.
a. Faulty backlighting cable assembly
(PLD)
b. Faulty display.
a. Failure
of
particular
LED’s
on
keyboard PCB.
b. Failure of backlighting cable assembly
(PLC).
a. Defective keys.
a. Module has not been signed on
b. Memory module fault.
c. Faulty control PCB.
a. Faulty receptacle.
a. Antenna assembly faulty.
b. Antenna board faulty.
c. Antenna Cable assembly faulty.
d. Type A/B Coupler PCB faulty.
e. Type A/B Coupler Cable assy faulty.
f. Control board faulty.
a. RLAN cable assembly faulty.
b. Mem Exp &I/S I/F PCB faulty.
c. PIC Controller board faulty.
d. Radio Module faulty.
e. Control board faulty.
8.2.8
8.2.9
8.2.10
8.2.11
8.2.12
8.2.13
8.2.14