SPP-A2770
32
32
6-8.
SCHEMATIC DIAGRAM – BASE MAIN Board (3/3) –
•
See page 25 for Waveform.
•
See page 25 for Note on Schematic Diagram.
R450
R453
TP423
C445
TP412
TP411
TP410
TP409
TP408
R412
R413
R414
R415
TP407
TP406
TP405
TP404
TP403
TP402
TP401
TP420
TP421
R439
R440
C460
C443
C442
X401
C439
C454
C459
TP422
R441
R444
R445
R446
R447
C444
R468
TP413
C451
R423
C401
R433
C428
R469
L413
L414
C453
C427
C426
R431
R427
R426
R428
R417
R501
L401
R424
R425
R494
R500
R490
C435
R491
R470
R411
R410
TP424
TP425
R496
D402
R459
C446
R460
C447
R461
IC403
C448
L410
D401
JC402
L408
L407
L406
L405
L404
R452
R416
C403
C416
R429
L411
C402
L403
C408
C413
C441
C440
C438
R462
R443
R401
R402
R403
R404
R405
R406
R407
R408
R409
R454
R455
R456
R457
R458
R420
R422
10k
4.7k
0.1
470
470
470
470
470
4.7k
470p
18p
18p
4.096MHz
0.1
3p
0.001
4.7k
470
470
470
470
0.1
0
3p
100k
0.1
220k
150p
0
0
0
22
3p
1
10k
1M
100k
100k
0
0
1M
1M
0
0
0
100
10V
0
0
10k
10k
0
1SS133T-77
10k
1
10k
0.1
10k
K9F4008W0A
0.1
0
1SS133T-77
0
0
0.1
0
0
0
10k
0
µ
H
3p
820p
1M
0
2200
10V
0.022
0.1
2200
6.3V
0.022
0.022
0
10k
100
8.2 H
C1
C2
C3
C
4
B1
B2
B3
B11
B12
B13
B14
B4
B5
B6
B7
B15
C5
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11
DB8
DB9
DB10
DB11
DB12
DB12
DB13
DB13
DB14
DB15
DB16
DB17
DB18
DB19
DB20
DL0
DL1
FSYNC
SCLK
2G
2F
2E
2D
2C
2B
2A
1G
1F
1E
1D
1C
1B
1A
n
FLASH MEMORY
1
µ
H
60
µ
H
Summary of Contents for SPP-A2770 - 2.4ghz Cordless Telephone
Page 55: ...55 SPP A2770 MEMO ...