Panasonic CQ-EF7260A Service Manual ▷ View online
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
8.3. CD Servo Block
IC201 : MN662783RPW1
Pin
No.
Port
Description
I/O
(V)
1
VDD
+5V power supply
-
5.0
2
D0
D-RAM data
I/O
2.3
3
D1
D-RAM data
I/O
1.8
4
/WE
D-RAM data write
O
4.9
5
/RAS
D-RAM row address strobe
O
3.4
6
D2
D-RAM data
I/O
0.8
7
D3
D-RAM data
I/O
0
8
/CAS0
D-RAM columun address strobe
O
3.9
9
/CAS1
D-RAM columun address strobe
O
0
10
A8
D-RAM address
O
0.6
11
A7
D-RAM address
O
1.1
12
A6
D-RAM address
O
0.7
13
A5
D-RAM address
O
0
14
A4
D-RAM address
O
1.1
15
A9
D-RAM address
O
0.4
16-18 A0-A2
D-RAM address
O
1.0
19
A3
D-RAM address
O
0
20
VSS2
Ground
-
0
21
VDD2
+5V power supply
-
5.0
22,23
-
Not used
-
-
24
TVD
Traverse motor control
O
2.5
25
PC
Not used
-
-
26
ECS
Spindle motor control
O
2.4
27
TRD
Tracking coil drive
O
2.5
28
FOD
Focus coil drive
O
2.4
29
FBAL
Focus balance
O
1.9
30
TBAL
Tracking balance
O
3.0
31
VREF
Refence voltage
I
2.5
32
FE
Focus error
I
2.5
33
TE
Tracking error
I
2.5
34
RFENV
RF envelope
I
2.5
35
OFT
Off track signal
I
0
36
/RFDET
RF detecting signal
I
0
37
BDO
Drop-out signal
I
0
38
LDON
Laser on signal
O
4.5
39
ARF
RF signal
I
2.5
40
IREF
Reference current input
I
1.2
41
DRF
Bias for DSL
I
2.4
42
DSLF
Loop filter for DSL
I/O
2.5
43
DSLF2
Loop filter for DSL
I/O
2.2
44
PLLF
Loop filter for PLL
I/O
1.4
45
VCOF
Not used
-
-
46
AVDD2
+5V power supply
-
5.0
47
AVSS2
Ground
-
0
48
OUTL
L channel output
O
2.3
49
AVSS1
Ground
-
0
50
OUTR
R channel output
O
2.3
51
AVDD1
+5V power supply
-
4.7
52-54
-
(Connecting to ground)
-
0
55
FLAG
Flag output
O
0
56
FCLK
Frame clock
O
0
57-59
-
Not used
-
-
60
TX
Not used
-
-
61
MCLK
Clock for I/F command
I
1.0
62
MDATA
Date for I/F command
I
3.1
63
MLD
I/F command load
I
5.0
64
BLKCK
Subcode block clock
O
0
65
SQCK
Ext.clock for sub code-Q
I
5.0
66
SUBQ
Code for sub. code-Q
O
3.8
67
DMUTE
Mute input
I
0
68
STAT
Status signal
O
5.0
69
/RST
Reset input
I
5.0
70
CSEL
(Connecting to ground)
-
0
71
PMCK
Not used
-
-
72
SMCK
Not used
-
-
73
SUBC
Not used
-
-
74
SBCK
Not used
-
-
75
/CLDCK
Not used
-
-
76
/TEST
(Connecting to VDD)
-
5.0
77
X1
Crystal oscillator
-
0.4
78
X2
Crystal oscillator
-
3.2
79
VDD1
+5V power supply
-
5.0
80
VSS1
Ground
-
0
IC301 : MN1873260AE
Pin
No.
Port
Description
I/O
(V)
1
VDD
+5V power supply
-
5.0
2
OSC2
Crystal oscillator
-
2.2
3
OSC1
Crystal oscillator
-
2.1
4
VSS
Ground
-
0
5
XI
(Connecting to ground)
-
0
6
XO
Not used
-
-
7
CM
(Connecting to ground)
-
0
8
VREFH
Reference voltage
I
5.0
9
SW13
Horizontal origin
I
4.9
10
SW12
Shuter SW
I
4.9
11
SW11
Clump SW
I
0
12
SW10
Play SW
I
0
13
SW4
Shuter SW
I
4.9
14
SW3
Tray origin SW
I
0
15
SW2
Inner SW
I
4.8
16
SW1
Outer SW
I
4.9
17
VREFL
(Connecting to Ground)
-
0
18
/RESET
Reset input
I
4.9
19
-
(Ground pull-down)
-
0
20
SCKM
Clock for serial data
I
5.0
21
SIM
CD changer serial data
I
1.3
22
SOM
CD changer serial data
O
4.3
23
SQCK
Ext. clock for sub. code-Q
O
5.0
24
SUBQ
Code for sub. code-Q
I
1.6
25
-
Not used
-
-
26
-
(Ground pull-down)
-
0
27
CD.ON
CD changer start/stop
I
5.0
28
ROM MUTE
-
-
-
29
BLKCK
Sub. code block clock
I
0
30
P.ON
In operation CPU
O
5.0
31
MUTE
Mute output
O
5.0
32
-
(Ground pull-down)
-
0
33
SENS
Not used
O
0
34
CLVS
Not used
O
5.0
35
FLOCK
Not used
O
0.2
36
TLOCK
Not used
O
0
37
VMI
Horizontal motor control
O
2.5
38
HMI
Vertical motor control
O
0
39
HVMUTE
H/V motor mute
O
0
40-42
-
(Ground pull-down)
-
0
43
SW9
Disc-in (B) SW
I
0
44
SW8
Disc-in (L) SW
I
0
45
SW7
Disc-in (F) SW
I
0
46
SW6
Disc push SW
I
0
47
SW5
Tray hight SW
I
4.5
48
BDO
Drop-out signal
I
0
49
DQSY
Not used
-
-
50
/RST
Reset output
O
5.0
51
STAT
Status signal
I
2.1
52
DMUTE
Mute output
O
0
53
-
Not used
-
-
8
CUSTOM MADE FOR SUBARU / CQ-EF7260A
54
P.DOWN
Power down signal
O
0
55
-
No connection
-
-
56
MLD
I/F command load
O
5.0
57
MDATA
Data for I/F command
O
3.1
58
MCLK
Clock for I/F command
O
4.1
59
SPMT
Spindle mute
O
5.0
60
MUTE12
Focus/Tracking mute
O
0
61
MUTE4
Loading motor mute
O
4.8
62
LDOI
Loading motor control
I/O
2.5
63
TRV
Forced traverse control
I/O
2.4
64
-
Not used
-
-
9
CUSTOM MADE FOR SUBARU / CQ-EF7260A
·
Power Supply Voltage : DC13.2V
·
Output Impedance : 4
Ω
·
Output Power : 0.5W
·
Balance, Fader Control : center
·
Bass, Treble Control : Center
·
Dolby NR: OFF
9 ALIGNMENT INSTRUCTIONS
9.1. Alignment Conditions
Note :
Do not align the FM/AM package block. When the package block is necessary, it will be supplied already aligned at the
factory.
factory.
9.2. Dolby NR Alignment
Step
Alignment Item
Test Tape
VTVM Connection
Adjust
Remarks
(1)
DOLBY NR Rch
RFKZ0038
TP201
VR201
Adjust for 388mV ±1.0dB
(2)
DOLBY NR Lch
RFKZ0038
TP301
VR301
Adjust for 388mV ±1.0dB
10 ALIGNMENT POINTS
10
CUSTOM MADE FOR SUBARU / CQ-EF7260A
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