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Motorola CDM1250 Service Manual

Motorola CDM1250
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Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Section 2: 3-3
6881091C63-F
2.0 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100
Troubleshooting Flow Charts
2.1 Troubleshooting Flow Chart for On/Off
Radio does not turn on when On/Off/Volume Knob is
pressed
NO
YES
YES
NO
R0823 Pin TAB
= 5V?
R0823 Pin TAB1
when pressed
= 5V?
Check / Replace
Volume Pot R0823
Check / Replace
R0822 / VR0822 /
D0822 / C0822
NO
YES
J0801 Pin 2
> 10V?
Check / Replace
Q0821
Check / Replace
Q0822 / R0821
YES
NO
J0801 Pin 2
=5V?
Check / Replace
D0821 / R0852
Press and hold
On/Off/Volume Knob

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Motorola CDM1250 Specifications

General IconGeneral
DisplayAlphanumeric
IP RatingIP54
Frequency RangeVHF: 136-174 MHz, UHF: 403-470 MHz
SignalingPL, DPL, MDC1200, Quick Call II
Operating Temperature-22°F to +140°F (-30°C to +60°C)
Power OutputVHF: 1-25W; UHF: 1-25W

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