SPP-A2480/S2430
1
2
1
3
2
C
B
E
2
3
1
B
C
E
(A2480)
1-679-075-
11
(11)
1-679-174-
13
(11)
1-679-174-
13
(11)
BASE MAIN BOARD
(CONDUCTOR SIDE)
S251
(HOOK ON/OFF)
ON
R
OFF
FU401
CN401
LINE
642135
J501
DC IN 11V
–
+
PH401
4
2
1
3
CN402
HANDSET
LOCAL
HANDSET
T
r
P
DIAL
MODE
S252
SP401
BLK
RED
A
BASE KEY BOARD
CN304
B
BASE KEY BOARD
CN305
1
2
BASE MIC BOARD
(COMPONENT SIDE)
MIC401
MIC
BASE MIC BOARD
(CONDUCTOR SIDE)
1
2
05
B
C
D
E
F
G
H
I
J
K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A
– 41 –
– 42 –
4-5.
PRINTED WIRING BOARDS – BASE MAIN (Conductor Side)/BASE MIC Boards –
•
See page 37 for Note on Printed Wiring Board.
• Semiconductor
Location
Ref. No.
Location
D251
I-9
D252
J-8
D401
E-4
D402
E-5
D403
E-4
D404
E-4
D405
D-5
D501
G-3
D502
F-6
D503
G-4
D652
D-12
D672
G-12
IC501
F-6
IC502
G-4
PH401
C-5
Q402
F-5
Q404
D-6
(Page 48)
(Page 48)