Printed Wiring Boards - Base Main Section - Sony SPP-M937 Service Manual

5-6. PRINTED WIRING BOARDS – BASE MAIN SECTION –
2 3 4
1
BASE MAIN BOARD (SIDE A)
A
R138
B
D27 D14 R137
D13
1
U12
2
D16
D28
R231
R233
C
D29
R220
R171
4 3 2 1
U20 U13
1 2 3 4
C100
D C101
Q15
C112
C97 C91 C93
BCE C8
BCE
Q14
1 14
U5
5 10
E
7 8
8 7
8 7
10 5
10 5
U14
U19
14 1
14 1
1 14
F
5 10
U18
7 8
1 14
5 10
U17
7 8
G
Q27 BCE
40 35 30 25
41 24
4 1
45 20
U4
15
50
U2
5 8
D17
H
55 10
7 5 1
60 5
U11
64 1 C204
65 70 75 80
8 10 14
R72
I
Q17
1 2
U8 L4
L23
L21
L3
J
02 02
U8
+ –
K MIC
CHARGE
TERMINAL
– 27 –
5 6 7 8 9
C5
C4 C2
4
3
14 10 8
U23
BASE RF
C170 BOARD
Q30 Q26
1 5 7
ECB ECB
C144
BCE BCE
Q23 Q19
C40
C227
14 10 8
Q13
Q12 U10
BCE
ECB
1 5 7
ECB
Q8
BCE
Q10
Q6
ECB
C145 C95
BCE Q28
Q1
RV2
C23
12 10 5 1 4 1
U9
U6
5 8
Q22
13 15 20 24
R157
C111
C22 RV1
C30
C79
C18
Q7 BCE
12 10 5 1
Q4
Q5 BCE BCE BCE
Q3
U3
C115
13 15 20 24
C74
C78 C77
C76
11
1-679-607-
(11)
10 11 12 13
BASE MAIN BOARD (SIDE B)
L2
L1
1
U1
3
ANT1
+9V
S1
RX AUDIO
DIAL MODE
TONE
RX LOOP VOLTAGE
R
TX LOOP VOLTAGE
PULSE
MIC DISABLE
MIC IN
TX PWR
GND
S3
RINGER LEVEL
L2
HIGH
r
10
1 5 13
LOW
U3
r
OFF
S2
RINGER LEVEL
L1
HIGH
X1
r
LOW
r
OFF
CT220
1 5 10 15
BASE KEY BOARD
A
(Page 35)
– 28 –
14 15 16 17 18
J1 J2 J7
J6
L1/L1+L2 L2 DATA
DC IN 9V
L25
L26
L24
L30
D22
D8
C113
C118
1
4
U7
C94
2 C131
3
C117
C116
T1 T2
TX GND TX
AUDIO 1 AUDIO 2
ATE DATA
GND
X2
ATE EN
CRDIN
19
11
1-679-607-
(11)
SPP-M937
Semiconductor Location
z
Ref. No. Ref. No. Location Location Ref. No. Location
D8 B-16 U13 D-3
D9 C-15 U14 E-4
D10 C-15 U17 G-2
D11 C-16 U18 F-2
D12 C-16
U19 E-2
D13 B-4 U20 D-3
D14 B-4 U23 C-6
D16 B-4
D17 H-5
D22 B-18 Q1 G-6
Q3 I-6
D23 C-17 Q4 I-6
D24 C-17 Q5 I-5
D25 C-17 Q6 F-7
D26 C-17
D27 B-3 Q7 I-6
Q8 E-6
D28 B-3 Q9
D29 C-3 Q10 F-6
Q12 E-6
U1 B-13 Q13 E-7
U2 H-4 Q14 D-3
U3 I-7 Q15 D-1
U4 H-2 Q17 I-3
U5 E-12 Q19 D-6
U6 H-6 Q22 H-5
U7 C-14 Q23 D-5
U9 H-8 Q26 D-5
U10 E-7 Q27 G-5
U11 H-2 Q28 G-5
U12 B-5 Q30 D-5
Note:
• X : parts extracted from the component side.
• : Through hole.
z
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
– 29 –