TX_2.75
1900_OUT
R408
FL452
800_OUT
page B15
page B25
page B15
AOC_CNTL
U1800-30
page B23
TX_2.75
A_D
U1800-14
page B23
QMOD_KEY
U1800-20
page B23
page B25
TX_2.75
C52
page B5
VCO_BUFF
TX_SF
page B7
OVCO_FDBK
C272
page B7
OVCO
R350
page B11
TX_I
TX_IX
TX_Q
TX_QX
TX_STEP
800*_1900
U1907-64
U1800-17
U1800-41
U1800-42
U1800-37
U1800-38
page B35
page B23
page B23
page B23
page B23
page B23
page B25
-27.57 dBm
1859.97MHz
-5.65 dBm
834.99MHz
-23.85 dBm@800MHz
992.31 MHz
-9.11 dBm@1900MHz
1026.165 MHz
-15.99 dBm@800MHz
157.32 MHz
-18.82 dBm@1900MHz
192.36 MHz
-20.39 dBm@800MHz
157.32 MHz
-15.95 dBm@1900MHz
192.36 MHz
A
Power Step
2
3
4
5
6
7
A
C
D
B
Band 800 1900
D
On
TX
Off
C
Analog Digital
B
.06V
2.98V
-29.31 dBm
1859.97MHz
2.11v 1.81v 1.81v 1.38v 1.66v 1.52v
.09V 2.83V
.05V
L351
FL413
C1508
C351
C350
R311
R53
C413
C334
C339
C402
XFMR377
C412
L378
C389
C401
C428
L381
C333
L401
C499
FL350
U301
MERLIN
C454
C300
L452
L451
R452
C425
C335
R425
R403
C427
C343
R342
R341
C18873
C18871
C342
TDMA T2290/T2297:
Merlin TX(U301)
B13
VCO_OUT
VCC_OFFSET2
OVCO_E
C487
C447
C395
VCA_OUT
C205
VCC_OFFSET
UPCON_INX
UPCON_IN
UPCON_OUTX
UPCON_OUT
1900_IN
Motorola Confidential Proprietary
This manual is Motorola property. Copying or
distribution strictly prohibited without prior written
consent from Motorola and must be returned upon
Motorola's request.
VOLTAGE SUPPLIES
Colored boxes represent the area in
which the components are placed.
Channel: 333
Cellular TX Freq: 834.99MHz
PCS TX Freq: 1859.97MHz
VCO SIGNAL
TX SIGNAL
Summary of Contents for T2290
Page 1: ...DIGITAL WIRELESS TELEPHONE Service Manual Level 3 Release 1 TDMA T2290 T2297 ...
Page 26: ... 2000 Motorola Inc TDMA T2290 T2297 Cellular Overview 16 ...
Page 40: ...Motorola Confidential Proprietary TDMA T2290 T2297 TDMA Test Mode NAM Programming 30 ...
Page 68: ...Disassembly TDMA T2290 T2297 Keypad Removal Motorola Confidential Proprietary 58 ...