Panasonic CQ-JM8080A Service Manual ▷ View online
6 BLOCK DIAGRAM (Main Block)
5
MAZDA / CQ-JM8080A
7 BLOCK DIAGRAM (CD Servo Block)
6
MAZDA / CQ-JM8080A
8.1. Main Block
IC601 : C2BBGF000254
Pin
No.
Port
Description
I/O
(V)
1
ST-SW
Stearing SW
I
4.6
2
VCONT
Phase diff. Level detection
I
0.3
3
P.CONT
System power control
O
5.0
4
LCD.CONT
Panel illumi. control
O
4.9
5
AMP. +B
Ext. amp power control
O
4.9
6
ANT.CONT
Not used
-
-
7
TEL.IN
Telephone mute input
I
4.4
8
ST-SW2
Stearing SW
I
0
9
TP
(+5V pull up)
-
4.8
10
AUX.CNT-IN AUX control signal
I
4.8
11
CD.ON
(Ground pull down)
-
0
12
CD-SOM
CD serial data
I
2.5
13
CD-SIM
CD serial data
O
1.5
14
CD-SCKM
CD clock
O
4.9
15
NC
No connection
-
-
16
RD.CONT
Radio power control
O
0
17
FM.CONT
FM radio power control
O
0
18
AMP.C
Power amp. stand-by
O
0
19
MUTE
Mute output
O
0
20
NC
No connection
-
-
21
GND
Ground
-
0
22
VDD
+5V power supply
-
5.0
23
AUX.CNT-
OUT
OUT
CD-CH control signal
O
0
24
COMBI.CNT COMBI.control signal
O
5.0
25
VOL.DATA
Data for Electronic volume
O
0
26
VOL.CLK
Clock for Electronic volume
O
0
27
NC
No connection
-
-
28
AM.IF
AM IF counter
O
0
29
FM.IF
FM IF counter
O
0
30
PLL.VD
PLL +5V power supply
-
5.0
31
FM.OSC
FM local OSC
I
1.9
32
AM.OSC
AM local OSC
I
1.3
33
GND
Ground
-
0
34
EO0
PLL error
O
1.5
35
EO1
Not used
-
-
36
IC
(Connecting to ground)
-
0
37
SD
B/S detection
I
0
38
FM.ST
FM stereo detetion
O
0.3
39
SSC
Search stop clear
O
0
40
DX/LOC
DX/LOC selection
O
0
41
NC
(Cinnecting to ground)
-
0
42
NC
(Cinnecting to ground)
-
0
43
NC
(Cinnecting to ground)
-
0
44
NC
(Cinnecting to ground)
-
0
45
NC
(Cinnecting to ground)
-
0
46
NC
(Cinnecting to ground)
-
0
47
NC
(Cinnecting to ground)
-
0
48
NC
(Cinnecting to ground)
-
0
49
NC
(Cinnecting to ground)
-
0
50
EN-B
Rotary encoder data
I
4.8
51
EN-A
Rotary encoder data
I
0
52
E2P.STB
Strobe for security ROM
O
0
53
E2P.DIN
Security ROM data
I
0
54
E2P/LCD.DO Security / LCD data
I/O
0
55
E2P/LCD.CK Security / LCD clock
O
0
56
LCD.DI
LCD data
O
5.0
57
LCD.CE
LCD chip enable
O
0
58
NC
No connection
-
-
59
BEEP
Beep output
O
5.0
60
NC
No connection
-
-
61
DIST
(Ground pull-down)
-
0
62
SIYOU
(Ground pull-down)
-
0
63
CD-ON
CD controller enable
O
4.9
64
CD-RESET
CD reset
O
4.9
65
CD-SW1
Disc-in SW
I
4.6
66
CD-SW3
Disc-out SW
I
4.5
67
BATT-DET
Battery level detection
I
4.5
68
ACC-DET
ACC level detection
I
4.7
69
ILL-DET
Illumi.-on detection
I
0
70
TAPE.EJ
Tape eject switch
I
1.2
71
CD.EJ
CD eject switch
I
4.7
72
CD-CH.IN
CD/MD changer disc-in
I
4.5
73
CD-CH.OUT CD/MD changer data
I
0
74
REG CPU
Coupling capacitor terminal
-
3.6
75
GND
Ground
-
0
76
X2
Crystal osillator
-
1.6
77
X1
Crystal osillator
-
1.1
78
REG OSC
Coupling capacitor terminal
-
4.9
79
VDD
+5V power supply
-
4.9
80
RESET
Reset input
I
4.6
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
8.2. Display Block
IC600 : YEAMLC75852C
Pin
No.
Port
Description
I/O
(V)
1-43 S1-S43
LCD segment data
O
2.5
44,45 COM1,2
LCD common output
O
2.5
46-50 KS1-KS5
Key scan signal
O
5.0
51
KS6
Not used
-
-
52-55 KI1-KI4
Key data
I
0
56
KI5
(Connecting to ground)
-
0
57
OSC
CR osillator terminal
-
4.0
58
Vss
Ground
-
0
59
RESET
Reset
I
0
60
VDD
+5V power supply
-
5.0
61
DATA OUT
LCD data
O
5.0
62
CE
LCD driver chip enable
I
0
63
CLK
Clock for LCD
I
0
64
DATA IN
LCD data
I
0
8 TERMINALS DESCRIPTION
7
MAZDA / CQ-JM8080A
8.3. CD Servo Block
IC201 : MN662748RPMF
Pin
No.
Port
Description
I/O
(V)
1
BCLK
Not used
-
-
2
LRCK
Not used
-
-
3
SRDATA
Not used
-
-
4
DVDD
+5V digital power supply
-
5.0
5
DVSS1
Digital ground
-
0
6
TX
Not used
-
-
7
MCLK
MPU command clock
I
0
8
MDATA
MPU command data
I
0
9
MLD
MPU command load
I
0
10
SENSE
Sense signal
O
0
11
/FLOCK
Focus servo lock
O
0
12
/TLOCK
Tracking servo lock
O
4.9
13
BLKCK
Not used
-
-
14
SQCK
Q code external clock
I
4.9
15
SUBQ
Q code output
O
2.5
16
DMUTE
DSP mute
I
0
17
STAT
DSP Status output
O
3.1
18
/RST
Reset input
I
4.9
19,20
Not used
-
-
21
TRV
Forced traverse output
O
2.5
22
TVD
Traverse drive output
O
2.5
23
PC
Spindle motor control
O
0
24
ECM
Spindle motor drive
O
2.5
25
ECS
Spindle motor drive
O
2.5
26
KICK
Kick pulse output
O
2.5
27
TRD
Tracking motor drive
O
2.5
28
FOD
Focus motor drive
O
2.5
29
VREF
D/A reference voltage
I
2.5
30
FBAL
Focus balance adjust
O
2.5
31
TBAL
Tracking balance adjust
O
2.5
32
FE
Focus error signal
I
2.5
33
TE
Tracking error signal
I
2.5
34
RFENV
RF envelope signal
I
2.5
35
VDET
Vibration detection
I
0
36
OFTR
Off track signal
I
0
37
TRCRS
Track closs signal
I
2.1
38
/RFDET
RF detection signal
I
0
39
BDO
Drop out signal
I
0
40
LDON
Laser on/off control
O
4.5
41
PLLF2
Not used
-
-
42
TOFS
TE offset
O
2.5
43
WVEL
Not used
-
-
44
ARE
RF signal
I
1.7
45
IREF
Reference current input
I
1.6
46
DRF
DSL bias
I
0
47
DSLF
DSL loop filter
I/O
2.4
48
PLLF
PLL loop filter
I/O
1.8
49
VCOF
Not used
-
-
50
AVDD2
+5V analog power supply
-
5.0
51
AFSS2
Analog ground
-
0
52
EFM
Not used
-
-
53
PCK/DSLB DSL bias
I
2.4
54
VCOF2
Tracking offset
O
2.5
55
SUBC
Not used
-
-
56
SBCK
(Connecting to ground)
-
-
57
VSS
Ground
-
0
58
X1
Crystal oscillator
I
1.7
59
X2
Crystal oscillator
O
2.3
60
VDD
+5V power supply
-
5.0
61,62
-
Not used
-
-
63
FCLK
Not used
-
-
64
IPFLAG
Not used
-
-
65
FLAG
Not used
-
-
66-69
-
Not used
-
-
70
IOSEL
(Connecting to ground)
I
0
71
/TEST
(Connecting to ground)
I
0
72
AVDD1
+5V analog power supply
-
4.9
73
OUTL
Audio Lch output
O
4.9
74
AVSS1
Analog ground
-
0
75
OUTR
Audio Rch output
O
4.9
76
RSEL
(Connecting to ground)
-
0
77
CSEL
(Connecting to ground)
-
0
78
PSEL
(Connecting to ground)
-
0
79
MSEL
(Connecting to ground)
-
0
80
SSEL
mode select
I
5.0
IC401 : MN101C117AF
Pin
No.
Port
Description
I/O
(V)
1
MASHON
Servo IC OSC control
O
5.0
2
P82
No connection
-
-
3
P81
No connection
-
-
4
P80
(Connection to ground)
-
0
5
Q1
Photo sensor signal (DISC IN)
I
4.5
6
Q3
Photo sensor signal (DISC OUT)
I
4.2
7
Q6
Photo sensor signal (Option)
I
5.0
8
SW4
Clamp SW signal
I
0
9
SW5
Inner SW signal
I
5.0
10
SW2
Feeder arm SW
I
5.0
11
PA6
(Connection to ground)
-
0
12
PA7/IFR
(Connecting to ground)
I
0
13
VDD
+5V power supply
-
5.0
14
OSC2
Crystal oscillator
-
5.0
15
OSC1
Crystal oscillator
-
3.3
16
VSS
Ground
-
0
17
NC
No connection
-
-
18
SOMI
CD control data
O
3.2
19
SIMO
CD control data
I
3.8
20
SCLM
Data shift clock
I
5.0
21
P06
Not used
-
-
22
BD0
Drop out signal
I
0
23
PC1
Loading motor driver control
O
5.0
24
PS2
Focus/Tracking driver control
O
0
25
VDET
Vibration detecting signal
I
0
26
P14
No connection
-
-
27
CDON
CD on signal
I
5.0
28
IRQ1.SENS
E
E
(Connecting to groung)
-
0
29
IRQ2
(Connecting to ground)
-
0
30
LOD
Loading motor control
-
2.6
31
TRV
Traverse motor control
-
2.5
32
/PRST
Servo IC reset
O
5.0
33
STAT
Status signal
I
4.0
34
DMUTE
DSP mute
O
0
35
SUBQ
Sub code Q data
I
2.6
36
SQCK
Sub code Q clock
O
5.0
37
/TLOCK
Tracking servo lock
I
0
38
/FLOCK
Focus servo lock
I
0
39
NRST
reset input
I
5.0
40
MMOD
(Connecting to ground)
-
0
41
SENSE
Sense signal
I
0
42
MLD
Command load
O
5.0
43
MDATA
Command data
O
0.9
44
MCLK
Command clock
O
4.6
8
MAZDA / CQ-JM8080A
Click on the first or last page to see other CQ-JM8080A service manuals if exist.