Panasonic CQ-JS6930A1S Service Manual ▷ View online
9 CD DISC CENTERING ALIGNMENT
•
•
•
•
This adjustment is for assuring that compact discs will be placed in the center of the turntable.
<Adjustment Condition / Jig>
•
•
•
•
Power Supply Voltage : 13.2V
•
•
•
•
Test Disc : TCD-792A
<Adjustment Procedures>
1. Attach the adjusting screw to the upper chassis (See Figure 1.).
2. Insert the test CD (TCD-792A) into the disc No.1 position and play it.
3. After checking whether the disc is centered on the turntable, turn the adjusting screw unit it is in the center.
<Check Items>
•
•
•
•
Check that the disc is correctly centered.
•
•
•
•
Check that the disc is securely clamped.
•
•
•
•
Check that no abnormal noise is produced when clamping the disc.
[Directions of Turning the Adjusting Screw]
•
•
•
•
CD stops before its proper position : Turn the screw counterclockwise.
•
•
•
•
CD overruns : Turn the screw clockwise.
4. After the adjustment, lock the screw.
9
CQ-JS6930A1S
10.1. Main Block
IC601 C2BBGF000068
Pin
No.
Port
Description
I/O
VOL(V)
FM
AM
CD Tape
1
LED CE
LCD Chip enable
I
0
0
0
0
2
LCD DO
LCD Data
I
4.7
4.7
4.6
4.6
3
NC
-
-
-
-
-
-
4
GND
Ground
-
0
0
0
0
5
F CONT2
F1/F2 mode change
O
0
0
0
0
6
F CONT1
O
0
0
0
0
7
VDD
+5V Power supply
-
4.8
4.8
4.8
4.8
8
BLINK
Disc Indicator light
control H: Light L:Out
the light
control H: Light L:Out
the light
O
0
0
0
0
9
BRIGHTN
ESS
ESS
Disc Indicator
depreciaion H:
Normal L: One stage
depreciation
depreciaion H:
Normal L: One stage
depreciation
O
0
0
0
0
10 NC
-
-
-
-
-
-
11 CD-ON
ID-CH MASH Power
control H: MASH ON
L:MASH OFF
control H: MASH ON
L:MASH OFF
O
0
0
0
0
12 NC
-
-
-
-
-
-
13 M1-B
M1-A M1-B L L
Brake L H Loading H
L Eject H H Brake
Brake L H Loading H
L Eject H H Brake
O
0
0
0
0
14 M1-A
O
0
0
0
0
15 NC
-
-
-
-
-
-
16 CD SOM
CD serial data input
I
4.6
4.6
4.3
4.6
17 CD SIM
CD serial data output
O
0
0
0
0
18 CD SCKM CD serial clock input
O
4.8
4.8
4.8
4.8
19 CD
RESET
L: CD CPU reset
O
4.8
4.8
4.8
4.8
20 START/ST
OP
CD communication
control H: Data
effective L: F Data
ineffective
control H: Data
effective L: F Data
ineffective
O
4.8
4.8
4.8
4.8
21 STBY
H: LA5625 Active L:
LA5625 Non active
LA5625 Non active
O
4.8
4.8
4.8
4.8
22 A/B
H: B side L: A side
O
0
0
0
4.8
23 MTL
H: Metal tape L:
Normal tape
Normal tape
O
0
0
0
4.8
24 P.CLK
LA5625 serial clock
output
output
O
0
0
0
0
25 P.DATA
LA5626 serial data
output
output
O
0
0
0
0
26 P.LATCH
LA5627 latch signal
output
output
O
4.8
4.8
4.8
4.8
27 MS
H: Silence L: Tone
I
1.2
1.2
1.2
0
28 MS PL/FF H: PLAY L: FF/REW
O
0
0
0
0
29 T.LOAD
H: EJECT finish L:
Loading start
Loading start
I
4.9
4.7
4.7
0
30 DOLBY
H: Dolby B C ON L:
Dolby B C OFF
Dolby B C OFF
O
0
0
0
4.8
31 CAM A/B
H: A side L: B side
I
0
0
0
4.8
32 T.IN
H: Tape out L: Tape
in
in
I
4.9
4.7
4.7
0
33 GND
Ground
-
0
0
0
0
34 ENDB
Tape end detection
I
0
0
0
0
35 ENDA
Tape end detection
I
0
0
0
0
36 CONT1
DIV1 DIV2 L H MAIN
or FMH L Except
or FMH L Except
O
0
0
0
0
37 CONT2
O
7.9
0
0
0
38 M2F
H: First L: Third
O
0
0
0
0.6
39 MSM
H: First L: Third
O
0
0
0
0
40 EQ
H: Metal tape L:
Normal tape
Normal tape
I
4.8
4.8
4.8
0
41 BIT3
Rotary Switch 3
I
4.8
4.8
4.8
0
42 BIT2
Rotary Switch 2
I
4.8
4.8
4.8
4.8
43 BIT1
Rotary Switch 1
I
0
0
0
4.8
Pin
No.
Port
Description
I/O
VOL(V)
FM
AM
CD Tape
44 PWM (NC)
-
-
-
-
-
-
45 MUTE
H: Mute ON L: Mute
OFF
OFF
O
0
0
0
0
46 BEEP
Beep output
O
0
0
0
0
47 VOL DAT
Volume data output
O
0
0
0
0
48 VOLCLK
Volume clock output
O
0
0
0
0
49 VOL CE
Volume chip enable
O
0
0
0
0
50 TEST
Automatic test
command
command
I
4.8
4.8
4.7
4.7
51 JPN/TAI
H: Taiwan L: Japan
I
0
0
0
0
52 PLL DO
PLL data input
I
4.8
4.8
4.8
4.8
53 PLL CLK
PLL clock output
O
0
0
0
0
54 PLL DI
PLL data output
OUT1(DX/LOC)
H:LOC L:DX
OUT1(DX/LOC) H:
1F START L:STOP
OUT1(DX/LOC)
H:LOC L:DX
OUT1(DX/LOC) H:
1F START L:STOP
O
0
0
0
0
55 PLL CE
PLL chip enable
output
output
O
0
0
0
0
56 LAN-OUT
AVC-LAN data
output
output
I
0
0
0
0
57 LAN-IN
AVC-LAN data input
I
0
0
0
0
58 ST
H: Stereo input ON
L: Stereo input OFF
L: Stereo input OFF
I
0
1.7
0
0
59 SD
H: Electric field ON
L: Electric field OFF
L: Electric field OFF
I
0
0
0
0
60 RESET
L: Reset
I
4.9
4.9
4.7
4.5
61 ILL-DET
H: Illumi. OFF L:
Illumi. ON
Illumi. ON
I
0
0
0
0
62 +B-DET
H: +B ON L: +B OFF
I
4.9
4.5
4.5
4.7
63 ACC-DET
H: ACC ON L: ACC
OFF
OFF
I
4.9
4.5
4.5
4.7
64 T.EJECT
H: Tape eject key off
L: Tape eject key on
L: Tape eject key on
I
4.9
4.6
4.6
4.8
65 CD-EJECT H: CD eject key off
L: CD eject key on
I
4.9
4.6
4.6
4.9
66 NC
-
-
-
-
-
-
67 NC
-
-
-
-
-
-
68 VDD
+5V Power supply
-
4.8
4.8
4.8
4.8
69 X2
Ceramic oscillator
6.29MHz
6.29MHz
-
2.3
2.3
2.3
2.3
70 X1
Ceramic oscillator
6.29MHz
6.29MHz
-
2.1
2.1
2.1
2.1
71 GND
Ground
-
0
0
0
0
72 XT2
Crystal oscillator
32.8kHz
32.8kHz
O
2.6
2.6
2.6
2.6
73 XT1
Crystal oscillator
32.8kHz
32.8kHz
I
2.4
2.4
2.4
2.4
74 AVDD
A/D convertor analog
power supply
power supply
-
4.8
4.8
4.8
4.8
75 ACC 5V
A/D convertor
reference voltage
reference voltage
-
4.8
4.8
4.9
4.8
76 MAIN VOL Main volume analog
input
I
0
0
0
0
77 VSM
AM signal meter
input
input
I
0.5
0.9
0.3
0
78 NC
-
-
-
-
-
-
79 DI
LCD deta output
O
0
0
0
0
80 CLK
LCD clock input
I
0
0
0
0
10 TERMINALS DESCRIPTION
10
CQ-JS6930A1S
10.2. 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
10.3. CD Deck Block
IC201 : MN662783RPW
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
OZ
0.4
16-18 A0
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
11
CQ-JS6930A1S
70
CSEL
(Connecting to ground)
-
0
71
PMCK
Clock output
O
2.5
72
SMCK
Clock output
O
2.5
73
SUBC
Serial data of sub code
O
0
74
SBCK
Shift clock for SUBC
I
0.6
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 : MNS73260ACBL
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
Shuter SW
I
4.9
10
SW12
Horizontal origin
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
Reference voltage
I
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
-
5.0
26
-
(Ground pull-down)
-
0
27
CD.ON
CD changer start/stop
I
5.0
28
-
Not used
-
5.0
29
BLKCK
Sub. code block clock
I
0
30
P.ON
Not used
-
5.0
31
MUTE
Mute output
O
5.0
32
-
(Ground pull-down)
-
0
33
SENS
Servo status
O
0
34
CLVS
Servo status
O
5.0
35
FLOCK
Focus servo lock
O
0.2
36
TLOCK
Tracking servo lock
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
XE
Not used
-
-
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
SYNC
Not used
-
-
12
CQ-JS6930A1S
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