Blam Backup Communications Lost - Hydraulics Suspended - JLG 1250AJP Troubleshooting Manual

Note Pretest Instructions
1.44.12 Turn off machine. Discon-
nect RS-232 passthru
[X015]. Remove socket 4
with ORN/Red wire
[X015.4.soc] and socket 8
with Black wire
[X015.8.soc] from connec-
tor body. Insert them onto
the mating pin. Disconnect
CAN line to ground module
at the T-connection in MTB.
1.44.13 Turn off machine. Discon-
nect RS-232 passthru
[X015] and BLAM J5
[X090].
1.44.14 Turn off machine. Discon-
nect RS-232 passthru
[X015] and RS-232 backup
passthru [X059].
1.44.15 Turn off machine. Discon-
nect RS-232 passthru
[X015] and BLAM J5
[X090].
1.44.16 Turn off machine. Discon-
nect RS-232 passthru
[X015] and RS-232 backup
passthru [X059].
1.44.17 Disconnect ground module
J1 [X001] and BLAM J5
[X090]
1.44.18 Disconnect BLAM J5
[X090] and RS-232 backup
passthru [X059]

1.45 BLAM BACKUP COMMUNICATIONS LOST - HYDRAULICS SUSPENDED

Flash Code: 9-9
BLAM backup communications lost - hydraulics suspended. If the ground module loses CAN communications with the
BLAM it will attempt to communicate via the RS-232 backup communications link. If the backup communications link cannot
be established, all main boom, tower boom, jib, swing and drive functions are disabled, and this fault is logged.
Note Pretest Instructions
1.45.1
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Turn on machine. Ignore faults generated by
the test setup. Is there continuity between RS-
232 passthru pin 1 [X015.1.pin] and pin 3
[X015.3.pin] -AND- Is there continuity
between pin 5 [X015.5.pin] and pin 7
[X015.7.pin]?
Is there continuity between RS-232 passthru
socket 3 [X015.3.soc] and BLAM J5 socket
10 [X090.10.soc]?
Is there continuity between RS-232 passthru
socket 3 [X015.3.soc] and RS-232 backup
passthru socket 1 [X059.1.soc]?
Is there continuity between RS-232 passthru
socket 7 [X015.3.soc] and BLAM J5 socket
11 [X090.11.soc]?
Is there continuity RS-232 passthru socket 7
[X015.7.soc] and RS-232 backup passthru
socket 2 [X059]?
Is there continuity between ground module J 1
socket 5 [X001.5.soc] and BLAM J5 socket
12 [X090.12.soc]?
Is there continuity between RS-232 backup
passthru pin 3 [X059.3.pin] and BLAM J5
socket 12 [X090.12.soc]?
Test
Have all personnel been removed from basket
and has it been lowered to transport position?
1250AJP
Result Corrective Action
Yes Keep RS-232 passthru [X015] disconnected.
Go to step 1.44.13
No Replace RS-232 backup relay and harness
assembly
Yes Go to step 1.44.15
No Keep RS-232 passthru [X015] disconnected.
Go to step 1.44.14.
Yes Repair/replace harness between RS-232 backup
passthru socket 1 [X059.1.soc] and BLAM J5
socket 10 [X090.10.soc]
No Repair/replace harness between RS-232
passthru socket 3 [X015.3.soc] and RS-232
backup passthru socket 1 [X059.1.soc]
Yes Keep BLAM J5 [X090] disconnected.
Go to step 1.44.17
No Keep RS-232 passthru [X015] disconnected.
Go to step 1.44.16
Yes Repair/replace harness between RS-232 backup
passthru socket 2 [X059] and BLAM J5 socket
11 [X090.11.soc]
No Repair/replace harness between RS-232
passthru socket 7 [X015.7.soc] and RS-232
backup passthru socket 2 [X059]
Yes Reprogram/replace BLAM
No Keep BLAM disconnected.
Go to step 1.44.18
Yes Repair/replace harness between ground module
J1 [X001] and BLAM J5 [X090]
No Repair/replace harness between RS-232 backup
passthru [X059] and BLAM J5 [X090]
Result Corrective Action
Yes See 1.44 BLAM BACKUP COMMUNICATIONS
LINK FAULTY on Pg. 46
No Call JLG for help.
1-47