Panasonic CQ-JH8280KH Service Manual ▷ View online
7 BLOCK DIAGRAM
7.1. Main/Display/Tape Deck Block
7
HONDA / CQ-JH8280KH
7.2. CD Servo Block
8
HONDA / CQ-JH8280KH
8.1. Main Block
IC600 : C2BBGF000099
Pin
No.
Port
Description
I/O
(V)
1
BAT
Battery level detection
I
4.4
2
ACC
ACC level detection
I
4.4
3
CD-SO
CD serial data
I
2.4
4
CD-SI
CD serial datat
O
1.4
5
CD-CLK
Shift clock for CD data
O
4.8
6
CD-RESET
CD reset
O
4.8
7
CD-ON
CD controller enable
O
4.8
8
SW3
Disc-out switch
I
4.2
9
SW1
Disc-in switch
I
4.4
10
A.END
Tape end signal
I
2.1
11
BIT2
Tape mode switch
I
4.4
12
BIT3
Tape mode switch
I
0
13
B.END
Tape end signal
I
2.1
14
EQ
Metal/Normal switchl
I
0
15
BIT1
Tape mode switch
I
4.4
16
VOL CLK
Electronic volume clock
O
0
17
VOL DATA
Electronic volume data
O
0
18
LCD-ON
LCD illumi. on/off
O
4.7
19
LCD-DO
LCD data
O
0
20
LCD-CLK
Shift clock for LCD data
O
0
21
LCD-CE
LCD driver enable
O
0
22
LCD-DI
LCD data
I
5.0
23
REMOTE
Remote signal
O
5.0
24
ACCDET
(Connecting to ground)
-
0
25
BATDET
(Connecting to ground)
-
0
26
NC
No connection
-
0
27
AVDD
+5V power supply
-
5.0
28
RAD-VCONT
Phase diff. level detection
O
0.9
29-30 NC
No connection
-
0
32
AVSS
Ground
-
0
33
REGCPU
Coupling capacitor terminal
I
3.5
34
VDD
+5V poer supply
-
4.8
35
REGOSC
Coupling capacitor terminal
I
4.8
36
X2
Crystal oscillator terminal
-
2.3
37
X1
Crystal oscillator terminal
-
2.0
38
GND
Ground
-
0
39
SSC
Serch stop clear
O
0
40
GND
Ground
-
0
41
AM.IFC
AM IF counter
O
1.9
42
FM.IFC
FM IF counter
O
2.1
43
VDDPLL
PLL +5V power supply
-
5.0
44
FM.OSC
FM local OSC
I
2.4
45
AM.OSC
AM local OSC
I
1.4
46
PLL GND
Ground
-
0
47
ED01
PLL error
O
1.4
48
E02
No connection
-
-
49
IC(Vpp)
( Connecting to ground)
-
0
50
RESET
Reset input
I
4.0
51
VOLA
Rotary encoder data
I
4.8
52
VOLB
Rotary encoder data
I
4.8
53
RESNONI
Not used
-
-
54
ST IN
FM stereo detection
I
0.3
55
DX/LOC
DX/LOCAL selection
O
0
56
SD
B/S detection
I
0
57
POWER SW
Power switch
I
4.6
58
OPEN
Not used
-
-
59
BEEP
Beep output
O
0
60-62 NC
No connection
-
-
63
M2F
Main motor control
O
0.6
64
NC
No connection
-
-
66
F.COM
FM radio power on/off
O
7.9
67
R.COM
Radio power on/off
O
7.9
68
SYS ACC
System power on/off
O
0
69
NC
No connection
-
4.6
70
NC
No connection
-
0
71,
72
NC
No connection
-
-
73
IE-BUS+
LAN data
O
0
74
IE-BUS-
LAN data
I
0
75
T.IN
Tape-in detection
I
0
76
MSM
MS gain contrl
O
4.7
77
A/B
Tape side detection
I
4.5
78
TAPE EJ
Tape eject
I
4.5
79
CD.EJ
CD eject
I
4.5
80
NC
No connection
-
-
81
GA-INPUT
(+5V pull-up)
-
4.8
82
GND1
Ground
-
0
83
EQ(MTL)
Metal tape mode selection
O
4.8
84
F/R
Tape head change
O
4.8
85
DOLBY
Dolby NR on/off
O
0
86
T.LOAD
Tape loading detection
I
0
87
MS(PL/FF)
MS mode selection
O
0
88
MS
MS detection
I
0
89
CAP.ON
Tape power control
O
4.7
90
CMP.ON
Tape power control
O
4.7
91
M2
Main motor control
O
4.7
92
M1B ON
Loading motor control
O
0
93
M1A ON
Loading motor control
O
0
94
CDP.ON
CD power control
O
4.8
95
TUNER+B
Not used
-
0
96
P.CONT1
COM8V power switch
O
4.7
97
MUTE
Mute output
O
0
98
STBY
Power amp. Stand-by
O
4.8
99
VDD
+5V power supply
-
4.8
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 : C0HBA0000016
Pin
No.
Port
Description
I/O
(V)
1
P1
Disc LED on/off
O
0
2-4
P2-4
Not used
-
-
5-28 S5-28
LCD segment data
O
2.5
29-40 S29-40
Not used
-
-
41-43 COM1-3
LCD common
O
2.5
44-48 KS1-5
Key strobe
O
0.9
49
KS6
Not used
-
-
50-53 KI1-4
Key data
I
0
54
KI5
Not used
-
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.1
57
VDD1
LCD angle
-
3.3
58
VDD2
LCD angle
-
1.7
59
VSS
Ground
-
0
60
OSC
Oscillator terminal
-
3.9
61
DO
Key data output
O
4.1
62
CE
LCD driver chip enable
I
0
63
CL
Shift clock for LCD data
I
0
64
DI
LCD data input
I
0
8 TERMINALS DESCRIPTION
9
HONDA / CQ-JH8280KH
8.3. CD Servo Block
IC201 : MNG748RPMFA
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(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
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
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 : MN101C117AG
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
1
MASHON
Servo IC OSC control
O
5.0
2
P82(NC)
-
-
-
3
P81(NC)
-
-
-
4
P5CNT
Photo sensor LED on/off
O
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
-
-
-
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(NC)
-
-
-
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(NC)
-
-
-
27
CDON
CD on signal
I
5.0
28
IRQ1.SENSE
(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
10
HONDA / CQ-JH8280KH
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