Panasonic CQ-EF7260A Service Manual ▷ View online
5 WIRING CONNECTION
4
CUSTOM MADE FOR SUBARU / CQ-EF7260A
6 BLOCK DIAGRAM (Main Block)
5
CUSTOM MADE FOR SUBARU / CQ-EF7260A
7 BLOCK DIAGRAM (CD Changer Block)
6
CUSTOM MADE FOR SUBARU / CQ-EF7260A
8.1. Main Block
IC601 : C2BBGF000085
Pin
No.
Port
Description
I/O
(V)
1
BATT-DET
Batterylevel detection
I
4.7
2
ACC-DET
ACC level detection
I
4.7
3
WB.CONT
(Ground pull-down)
-
0
4
FM.CONT
FM radio power control
O
5.1
5
AM/FM.CON
T
T
Radio power control
O
5.0
6
CD-ON
CD controll enable
O
5.4
7
CD-RESET
CD reset
O
5.3
8
CD-SOM
CD serial data
I
4.9
9
CD-SIM
CD serial data
O
5.2
10
CD-SCKM
Shift clock for CD serial data
O
5.3
11
CD-SW1
(Ground pull-down)
I
0
12
CD-SW3
(Ground pull-down)
I
0
13
IDC.CONT
CD changer power control
O
5.2
14
DOLBY
Dolby NR control
O
0
15
M1-A
Tape main motor control
O
0
16
M1-B
Tape main motor control
O
0
17
END-A
Tape end detection
I
1.5
18
END-B
Tape end derection
I
1.6
19
VOL.CLK
Electronic volume clock
O
0
20
VOT.DATA
Electronic volume data
O
0
21
MUTE
System mute
O
0
22
AMP.C
Power Amp. stand-by
O
5.2
23
V.CONT
(Ground pull-down)
-
0
24
ILL.C
(Ground pull-down)
-
0
25
EQ/AM.IN
(Ground pull-down)
-
0
26
BIT1
Tape mode switch
I
4.9
27
AVDD
+5V power supply
-
5.2
28
BIT2
Tape mode switch
I
4.9
29
BIT3
Tape mode switch
I
0
30
SD
B/S detection
I
0
31
FM.ST
FM stereo detection
I
0.4
32
AVSS
Ground
-
0
33
REGCPU
Coupling capacitor terminal
-
3.4
34
VDD
+5V power supply
-
5.2
35
REGOSC
Coupling capacitor terminal
-
5.2
36
X2
Crystal oscillator
-
2.2
37
X1
Crystal oscillator
-
0
38
GND
Ground
-
0
39
SSC
Serch stop clear
O
0
40
GND
Ground
-
0
41
AM.IF
AM IF counter
O
0
42
FM.IF
FM IF counter
O
0
43
PLL.VDD
PLL +5V power supply
-
5.2
44
FM.OSC
FM local OSC
I
2.4
45
AM.OSC
AM local OSC
I
1.3
46
PLL.GND
Ground
-
0
47
EO0
PLL phase error
O
1.4
48
NC
No connection
-
-
49
IC
(Connecting to ground)
-
0
50
/RESET
System reset
I
4.8
51
CD.EJ
CD eject switch
I
5.1
52
TAPE.EJ
Tape eject switch
I
5.1
53-57 KI1-5
Key data input
I
0
58
AM NC
(Ground pull-down)
-
0
59
BEEP
Beep output
O
0
60
DIV ON/OFF (+5V pull-up)
-
5.0
61-66
-
Not used
-
-
67
M2
Tape sub motor control
O
0
68
M2F
Tape sub motor control
O
0.5
69
EN-B
Rotary encoder data
I
0
70
EN-A
Rotary encoder data
I
0
71
SYIYOU6
Specification setting
I
4.9
72
SYIYOU7
Specification setting
I
0
73
SYIYOU8
Specification setting
I
0
74
LCD.DIN
LCD data
I
5.1
75
LCD.CE
LCD chip enable
O
0
76
LCD.CLK
LCD shift clock
O
0
77
LCD.DOUT
LCD data
O
0
78
POWER.SW Power switch input
I
5.1
79
CD-CH.IN
CD changer data
I
5.1
80
CD-CH.OUT CD changer data
O
0
81
ILL.DET
(ACC5V pull-up)
I
5.1
82
GND
Ground
-
0
83
TEST.P
Test point
I
5.1
84
SYIYOU1
Specification setting
I
5.0
85
SYIYOU2
Specification setting
I
0
86
SYIYOU3
Specification setting
I
5.0
87
SYIYOU4
Specification setting
I
5.0
88
SYIYOU5
Specification setting
I
0
89
P.CONT
Power control
O
5.1
90
LCD.C
LCD illumi. control
O
5.1
91
TAPE.CONT Tape power control
O
4.6
92
A/B.OUT
Tape FF/REW selection
O
0
93
MS-PL/FF
MS mode control
O
0
94
MSM
MS gain control
O
0
95
MS
Tape unrecorded portion detection
I
0
96
A/B.IN
Tape side detection
I
0
97
T.LOAD
Tape loading detection
I
0
98
T-IN
Tape-in signal
I
0
99
VDD
+5V power supply
-
5.2
100
GND
Ground
-
0
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
8.2. Display Block
IC901 : YEAMLC75853
Pin
No.
Port
Description
I/O
(V)
1-15 S1-S15
LCD segment data
O
2.5
16-19 S16-S19
Not used
-
-
20-40 S20-S40
LCD segment data
O
2.5
41-43 COM1-3
LCD common
O
2.5
44-47 KS1-4
Key scan
O
0.9
48,49 KS5, 6
Not used
-
-
50-54 KI1-5
Key data
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.1
57
VDD1
Ground through capacitor terminal
-
3.3
58
VDD2
Ground through capacitor terminal
-
1.7
56
Vss
Ground
-
0
60
OSC
CR oscillator terminal
-
3.9
61
DO
LCD data
O
4.4
62
CE
LCD driver chip enable
I
0
63
CL
Clock for LCD
I
0
64
DI
LCD data
I
0
8 TERMINALS DESCRIPTION
7
CUSTOM MADE FOR SUBARU / CQ-EF7260A
