Pcs Tx - Samsung SGH-C266 Service Manual

9-2-6. PCS Tx

Check PAM100
pin #12 is
about 2~3dbm?
Yes
1
Check and change
RFS100, L104, L103,
C111, L101, C199
CONTINUS TX ON CONDITION
TX POWER DAC : 560 CODE
APPLIED
CH : 660CH(PCS)
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV : 10dBm
ATT : 20dB
No
Check PAM100
pin #6 is
about 2.8?
Yes
Check PAM100
pin #19 is
about 4~5dbm?
No
Check UCD101
pin #11 is
about 4~5dbm?
Yes
UCD101 pin #14
is 3.7V ?
Yes
UCD101 pin #17
is 2.9V ?
Yes
UCD101 pin #2
is 1.8V ?
Yes
UCD101 pin #20
is about 26MHz?
Yes
UCD101 pin #21
is about 26mHz?
Yes
Check and resolder or change
UCD107
9-23
2
No
Check and resolder or change
3
Check and resolder or change
Yes
3
4
No Check and resolder or change
5
No
Check and change
6
No
6
No
7
No
6
No
Fl o w Chart of Troubl e shooti n g
UCD101
PAM100
C105, R195
Battery, UCD107
Check UCD101
Check UCD100
Check OSC101
Check UCD101