Maxon Telecom FM Mobile radio SM-2000 - Manual (Page 61)

TROUBLE SHOOTING CHART (SM-2000)
Status Indications & Audible Tones
Unit Does Not Program
1. Defective Programming Lead
2. Wrong Programming Mode
3. Defective MIC Connector
4. Defective IC412
Unit Does Not Work
1. Open DC fuse in Power Cable
2. Defective Volume Switch
3. Defective Regulator IC107, 105, 402
4. Broken DC Cable
No Output from Speaker
1. Defective internal speaker and external jack
2. Defective IC108
3. Defective VR801
Squelch Does Not Work
1. Wrong alignment of squelch resistor RV103
2. Defective IC109
3. Defective CPU IC409
No Sub Audio Decode
CTCSS/DCS
1. Wrong Programming
2. Defective Switch Filter IC406 (MF-6)
3. Defective CPU IC409
MAXON SM-2000 MOBILE
TROUBLE SHOOTING CHART (SM-2000)
Page-57-
December 98
STATUS DESCRIPTION LED COLOR AUDIBLE TONE
NORMAL
Power on ready N/A Melody
Busy Yellow N/A
Correct Tone Green N/A
Transmit Red N/A
Scan Green, Flashing N/A
Busy Lock Yellow, Flashing Single Tone
WARNING
Time Out Timer N/A Single Tone
Battery Low Red, Flashing Four Tone, Repeated
ERROR
EEPROM Error Red, Flashing Single Tone Repeated
PLL Error Red, Flashing Double Tone Repeated
Filtering Error Red, Flashing Three Tone Repeated