Table of Contents
Advertisement
SPP-M937
5-9. PRINTED WIRING BOARD – BASE KEY SECTION –
1
2
BASE KEY BOARD
A
+
SPK1
SPEAKER
–
S17
REDIAL/
PAUSE
B
S1
1
C
S4
4
S7
7
D
S10
LED6
CHARGE
E
S15
HOLD
S21,LED1
S19
MUTING
F
LED4
MUTING
J5
1
5
10
02
A
BASE MAIN BOARD
G
(Page 28)
Semiconductor
z
Location
Ref. No.
Location
LED1
F-2
LED2
F-3
LED3
F-4
Note:
LED4
F-2
• X : parts extracted from the component side.
LED6
F-1
•
: Pattern from the side which enables seeing.
3
4
S33
–
S28
S26
SPEED DIAL
FLASH
S2
S3
2
3
S5
S6
5
6
S8
S9
8
9
S11
S12
0
#
LED3
INTERCOM
S13
S30
CONF
INTERCOM
TALK
S24,LED2
LINE 1
LINE 2
OFF
S23
LED1
LED2
15
19
1-679-608-
– 35 –
5-10. SCHEMATIC DIAGRAM – BASE KEY SECTION –
5
S32
+
VOL
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
specified.
•
: B+ Line.
11
(11)
• Power voltage is dc 9V and fed with regulated dc power
supply from external power voltage jack (J6).
• Signal path.
N
: RX
W or less unless otherwise
4
– 36 –
Advertisement
Table of Contents
