Samsung SGH-A737 Service Manual page 66
Umts telephone
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Also See for SGH-A737:
- User manual (180 pages) ,
- Manual del usuario (180 pages) ,
- Information manual (2 pages)
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Flow Chart of Troubleshooting
9-2-11. UMTS1900 Receiver
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Continuous RX ON
RF Input : 4408 CH
AMP : -40dBm
NORMAL
CONDITION
Catch the channel
?
YES
Check L130 ≥ -
55dBm ?
YES
PAM201 Check
Pin #10 ≥ -45dBm
?
YES
F204 Check
Pin #5 ≥ -45dBm
?
YES
U202 Check
Pin#26 ≥ -65dBm ?
YES
C233 , C234 , C235 ,
C236 ≥ -65dBm?
U203 check
pin#7 freq = 19.2MHz
THE END
NO
NO
NO
NO
NO
NO
YES
NO
YES
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Check antenna contack
Replace RFS100
Replace PAM201
F204 Resolder or change
Check the path from
F204 to U202
Resolder or replace C233 ,
C234 , C235 , C236
Check U203
9-32
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