13 — Display (CX30/CX34)
13–10
CX20/CX30/CX34 Service Manual
13.4
Servicing
WARNING
HAZARDOUS VOLTAGES EXIST INSIDE THE UNIT.
BEFORE REMOVING THE COVER, ENSURE THAT MAINS
POWER IS DISCONNECTED COMPLETELY. EXCEPT
WHERE SPECIFIED IN THESE PROCEDURES, DO NOT
APPLY POWER TO THE UNIT WHEN THE COVER IS
REMOVED.
Caution
Do not adjust the display PCB switch settings with the
machine powered up as this will damage the display
drivers.
13.4.1
Removing a display PCB (CX30)
To remove a display PCB, proceed as follows:
1
Switch off the machine and isolate it from the mains power supply.
2
Remove applicable screen (pull off).
3
Detach display PCB by removing two Posidrive screws at the bottom
corners of display PCB: support the housing behind the screws. Then
remove display PCB from under two tabs of display housing: support
display PCB as it is released.
4
Disconnect electrical connector from rear of display PCB.
5
If fitting new display PCB, make written note of switch settings on two
DIL switches on display PCB, so that these settings are transferred to
new display PCB. Also note installed position (vendor or customer).
6
If removing both display PCBs temporarily, attach label to each stating
installed position (vendor or customer).
13.4.2
Fitting a display PCB (CX30)
To fit a display PCB, proceed as follows:
1
Connect display PCB to electrical connector.
2
Fit display PCB under two tabs of display housing and secure using two
Posidrive screws in the bottom corners: support the housing behind the
screws while you are fitting them.
3
If necessary, set DIL switches (refer to Tables 13.1 to 13.4, depending
on country).
4
Fit screen (push fit), noting that small gap in screen rim is to be at the
lower edge.
5
When unit is powered–up, observe display function.
Summary of Contents for CX20 SERIES
Page 258: ...PL 1 CX20 CX30 CX34 Service Manual Section PL Parts List ...
Page 284: ......
Page 287: ......
Page 317: ...Addendum A Phase 1 4 and CX34 Parts List A 30 CX20 CX30 CX34 Addendum A ...
Page 318: ......
Page 321: ......
Page 323: ...Contents B 2 Addendum B ...
Page 343: ...Addendum B Phase 1 5 1 5 3 and New Main PCB B 22 Addendum B ...
Page 344: ......
Page 347: ......
Page 351: ...PL Parts List Devlin Keyboard C 6 Addendum C ...
Page 352: ......