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4-1-4 FM Tuner does not work.
Symptom
No FM radio reception
1 Check C152 FM_VDD on 1.0V
Major Checklist
2 Check FM_Clock of 32.768KHz from RTC clock output
Activate the FM radio.
Are the earphones plugged in?
Yes
Is BTEM48B2SA CHIP set to
ENABLE?(IC100 20PIN)
Yes
2
Is 32.768 KHz CLOCK being
inputted normally?
Yes
Completion
Samsung Electronics
All manuals and user guides at all-guides.com
No
Connect an earphone & check again
No
Check the power terminal.
No
Is RTC CLOCK functioning
Refer to wave pattern
image of Table 4-3.
Yes
1
C152 : 1.0V
Refer to wave pattern
image of Table 4-3.
normally?
Yes
Divide resistor check
R103: 270K, R104: 1M
Replace the BOARD
(needs thorough examination).
Troubleshooting
No
No
4-7
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