Motorola GM140 Service Information page 4

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Chapter 3 TROUBLESHOOTING CHARTS
1.0 Troubleshooting Chart for Controlhead GM140/340/640 .................................... 3-1
1.1 On/Off ................................................................................................................. 3-1
1.2 Microprocessor ................................................................................................... 3-2
2.0 Troubleshooting Chart for Controlhead GM160/360/660 .................................... 3-3
2.1 On/Off ................................................................................................................. 3-3
2.2 Microprocessor ................................................................................................... 3-4
2.3 Display ................................................................................................................ 3-5
2.4 Backlight ............................................................................................................. 3-6
3.0 Troubleshooting Chart for Controlhead GM380/1280 ......................................... 3-7
3.1 On/Off ................................................................................................................. 3-7
3.2 Microprocessor ................................................................................................... 3-8
3.3 Microprocessor ................................................................................................... 3-9
3.4 Display .............................................................................................................. 3-10
3.5 Keypad Backlight .............................................................................................. 3-11
3.6 Display Backlight .............................................................................................. 3-12
Chapter 4 CONTROLHEAD PCB/SCHEMATICS/PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1
2.0 Controlhead GM140/340/640 - PCB 8486146B07 / Schematics......................... 4-3
2.1 Controlhead PCB 8486146B07 - Parts List ......................................................... 4-6
3.0 Controlhead GM160/360/660 - PCB 8486155B06 / Schematics ........................ 4-7
3.1 Controlhead PCB 8486155B06 - Parts List ...................................................... 4-12
4.0 Controlhead GM380/1280 - PCB 8486178B03 / Schematics............................ 4-13
4.1 Controlhead PCB 8486178B03 - Parts List ....................................................... 4-18