5-4
Troubleshooting
YES
YES
The connection
is OK?
Melody is not heard.
END
Check the connectivity
of Speaker.
Check whether or not the
melody signal is out from
Pin 17, 18 of U405?
Connect the Speaker to
the phone properly.
Check the level of C405
(PIN 15) level is VBAT.
Replace U405.
NO
NO
5.4 Melody Trouble
Содержание BD38
Страница 1: ...GSM PHONE SERVICE MANUAL MODEL BD38 1st version 2004 06 09 ...
Страница 2: ...Rev 1 00 ...
Страница 32: ...5 14 Troubleshooting ...
Страница 35: ...6 PCB Diagram 6 1 Main PCB 6 1 Top View ...
Страница 36: ...6 2 PCB Diagram Bottom View ...
Страница 42: ...8 Exploded View and Parts List 8 1 Exploded View Main 8 1 1 Main 8 1 ...
Страница 43: ...8 2 Exploded View and Parts List 17 13 18 16 1 2 3 5 6 8 7 12 15 19 14 21 20 10 11 4 9 8 1 2 Folder ...
Страница 46: ...9 Block Diagram 9 1 BB Block Diagram 9 1 ...
Страница 47: ...Block Diagram 9 2 RF Block Diagram 9 2 ...
Страница 48: ...10 Schematic Diagram 10 1 Key Pad 10 1 ...
Страница 49: ...10 2 Schematic Diagram 10 2 Main Board 10 2 1 Chipset ...
Страница 50: ...10 3 Schematic Diagram 10 2 2 Memory Melody ...
Страница 51: ...10 4 Schematic Diagram 10 2 3 Audio SIM ...
Страница 52: ...10 5 Schematic Diagram 10 2 4 Connector ...
Страница 53: ...10 6 Schematic Diagram 10 3 RF Top Schematic 10 3 1 RF PAM ...
Страница 54: ...10 7 Schematic Diagram 10 3 2 RF Main IC ...