Motorola GM328 Service Manual page 38

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4.10 Speaker (Remote Mount Configuration only) ............................................... 2-13
4.11 Electrostatic Transient Protection................................................................. 2-13
Section 3 Troubleshooting Charts
1.0 Controlhead GM328 Troubleshooting Flow Chart ............................................... 3-1
1.1 On/Off ............................................................................................................ 3-1
1.2 Microprocessor............................................................................................... 3-2
2.0 Controlhead GM338 Troubleshooting Flow Chart ............................................... 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 Controlhead GM398 Troubleshooting Flow Chart ............................................... 3-7
3.1 On/Off ............................................................................................................ 3-7
3.2 Microprocessor .............................................................................................. 3-8
3.3 Microprocessor (cont.).................................................................................... 3-9
3.4 Display ......................................................................................................... 3-10
3.5 Keypad Backlight ......................................................................................... 3-11
3.6 Display Backlight ......................................................................................... 3-12
Section 4 Controlhead PCBs / Schematics / Parts lists
1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1
2.0 Controlhead GM328 - PCB 8486146B07 / Schematics....................................... 4-3
Controlhead GM328 - PCB 8486146B07 .............................................................. 4-3
Controlhead GM328 - Schematic Sheet 1 of 2....................................................... 4-4
Controlhead GM328 - Schematic Sheet 2 of 2....................................................... 4-5
Controlhead PCB 8486146B07 Parts List .............................................................. 4-6
3.0 Controlhead GM338 - PCB 8486155B06 / Schematics....................................... 4-7
Controlhead GM338 - PCB 8486155B06 .............................................................. 4-7
Controlhead GM338 - Schematic Sheet 1 of 4....................................................... 4-8
Controlhead GM338 - Schematic Sheet 2 of 4....................................................... 4-9
Controlhead GM338 - Schematic Sheet 3 of 4..................................................... 4-10
Controlhead GM338 - Schematic Sheet 4 of 4..................................................... 4-11
Controlhead PCB 8486155B06 Parts List ............................................................ 4-12
4.0 Controlhead GM398 - PCB 8486178B03 / Schematics ..................................... 4-13
Controlhead GM398 - PCB 8486178B03 ............................................................. 4-13
Controlhead GM398 - Schematic Sheet 1 of 4..................................................... 4-14
Controlhead GM398 - Schematic Sheet 2 of 4..................................................... 4-15
Controlhead GM398 - Schematic Sheet 3 of 4..................................................... 4-16
Controlhead GM398 - Schematic Sheet 4 of 4..................................................... 4-17
Controlhead PCB 8486178B03 Parts List ............................................................ 4-18