Motorola CM340 Service Information - Page 13

Browse online or download pdf Service Information for Two-Way Radio Motorola CM340. Motorola CM340 26 pages. Commercial series controlhead
Also for Motorola CM340: User Manual (24 pages), User Manual (5 pages), User Manual (12 pages)

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Motorola CM340 Service Information
1.0
Controlhead CM140/CM340 Troubleshooting Chart
1.1
Control Head Failure

TROUBLESHOOTING CHARTS

Control Head Check
No
Back light
OK ?
YES
Power-up
No
Alert Tone
OK ?
YES
Power-up
No
Red LED
Flash?
YES
No
Channel
Display
OK?
YES
Up/Down
P1 and P2
No
Alert Tone
Buttons OK?
YES
EXT
No
PTT
OK ?
YES
No
Communication Ok
Control Head is OK
Check 9.3V on
R808, R809
Check Speaker
Connection
Check
D801, Q806, U801
Check
DS801, U801, U802
Check R845, R846
R810, R811
Check Q801, Q802
Check Q803, Q812
Chapter 3