Text preview for : 15_03_01.pdf part of PANASONIC KX-FT902 SERVICE MANUAL



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+5V




D7




+5V
E




S
6

5

4




0
R B
D

D

D




R
NC




V




G
( )
R7




W




D

CN2
10
+5V




9

8

7

6

5

4

3

2

1
5V




NC




R25
( )
R3




4.7
+5V
C10
0V




NC


NC
( )


( )
R6


C13
( )
NC




Z0.22u
+5V +5V
R4 TO LCD




( )
C18


C17
( )




Z0.22u
Z0.1u
NC




6.3V220u




56K
Z0.1u




330
( )
C3



C4



C5
R5 C11
TO MIC
(Q1) ( ) ( )




R11


R12
NC NC
NC MIC+
LCD




NC
( )
+5V




C12
TO DIGITAL MIC- +5V
CONTRAST




NC
( )
A C




R8
DOCUMENT
PS1
3.3V SET SW
K E
0V NO PAPER 5V




4.7K
R10
+5V




LED1
CN1
PAPER 5V




NC
R47 0




R15
( )
TxD 1

Latch 2
R45 0
0V R9
4 ( )
1
3 2
100




560

R14




R17
R48 0




270
RxD 3 SW44




[4]




K0.01u
C14
R13
DOCUMENT




27K
Start 4 R44 0
TOP SW
SCLK 5
R46 0

DG 6




C6 K330p
J120p

Reset 7
R24 0
K0.01u
K330p




( )


( )
C9



C19




+5V 8




K330p




J120p




33
32
31
30
29
28
27
26
25
24
23
NO PAPER 5V




C7




C8
C20




LED ON : 0V




RWB
RS
E
D7
D6
D5
D4
RESET
AG 9




RXD
SCLK
TXD
NC 10 34 LATCH
IC1
LED1 22 PAPER 0V OFF : 5V
35 START XLED15 21
MICIN 11 36 LED2 XLED14 20
37 LED3 XLED13 19
FG 12 38 LED4 VSS-18 18
39 VSS-39 VDD-17 17
40 VDD-40 XLED11 16




Z0.1u
C15
41 LED5 XLED12 15




C16

Z0.1u
42 KIN0 KIN7 14 +5V
+5V 43 KSL0 KIN6 13




XLED10
44 KSL1 KIN5 12




XLED8
XLED9
LED6

LED7
KSL2




KSL3
KIN1




KIN2
KIN3


KIN4
10
11
1
2
3
4
5
6
7
8
9
+2.5V




KSL0
KSL1




KSL2

KSL4




KSL3
KIN0




KIN1


KIN2
KIN3

KIN4



KIN5
KIN6
KIN7
FG
KIN0




KIN1




KIN2




KIN3




KIN4




KIN5




KIN6




KIN7
NC
LOWER No 4/ No 15 RECORD No 5/ No 16 8 9 7 No 1/ No 12
( )
SW1 SW6 SW11 SW16 SW21 SW26 SW31 SW36


KSL0
+5V +5V
NC NC