Replacing The Main Pcb - GE MAC 600 SPY Service Manual

Replacing the main PCB

4-18
Maintenance: Preparing System for FRU Replacement
6. Press the ferrite to close the lock.
7. Reconnect the cables.
8. Perform functional tests associated with the adapter change.
NOTE
Before replacing the main PWA we recommend that you update the
SW (refer to "Programming MAC 600 Device Without User Interface"
on page 4-33) and check if the problem can be resolved.
1. Open the device as described in
2. Disconnect the display cable from J5, for the old PWA or J6 for the
new PWA, the keypad cable from J4 for the old PWA or J7 for the
new PWA, and the printer cable from J10 for the old PWA or J5 for
the new PWA. (refer
3. Remove the four screws fastening the PCB assembly to the bottom
cover.
4. Return the PCB assembly to the factory in the ESD packaging.
5. Attach the new main PCB assembly by aligning the mounting holes
with those in the bottom cover, and fastening the new PCB assembly
to the bottom cover with the screws.
6. Connect the display cable to J5 for the old PWA or J6 for thenew
PWA, the keypad cable to J4 for the old PWA or J7 for the new PWA,
and the printer cable to J10 for the old PWA or J5 for the new PWA
(refer "PWA Connector Details"
7. Attach the upper section of the device to the lower section with the
four screws.
8. Replace the battery in the battery compartment, slide on the cover.
TM
MAC 600
2047426-002
"Opening the Device"
"PWA Connector Details"
on page 4-10).
on page 4-8.
on page 4-10).
Revision G