Panasonic CQ-EH1280A (serv.man2) Service Manual ▷ View online
7 BLOCK DIAGRAM
7.1. Main Block
5
HONDA / CQ-EH1280A
7.2. CD Servo Block
6
HONDA / CQ-EH1280A
8.1. Main Block
IC601 : C2CBJG000241
Pin
No.
No.
Port
Descriptions
I/O
FM
(V)
AM
(V)
CD
(V)
1
DPS RESET
DSP reset
O
5.0 5.0
0
2
IDC-ST/STP IDC start/stop
O
4.9 4.9 4.9
3
NC
No connection
-
-
-
-
4
NC
No connection
-
-
-
-
5
SEC-LED
Security LED
O
0
0
0
6
VOL B
Volume signal
I
4.4 4.4 4.4
7
VOL A
Volume signal
I
4.4 4.4 4.4
8
LCD-CLK
LCD data shift clock
O
0
0
0
9
LCD-DI
LCD data
O
4.9 4.9 4.9
10
LCD-DO
LCD data
O
0
0
0
11
RESET
System reset
I
5.0 5.0 5.0
12
XT2
Crystal oscillator
terminal
terminal
-
2.0 2.0 2.0
13
XT1
Crystal oscillator
terminal
terminal
-
1.7 1.7 1.7
14
VSS
Ground
-
0
0
0
15
X2
Crystal oscillator
terminal
terminal
-
1.8 1.8 1.8
16
X1
Crystal oscillator
terminal
terminal
-
1.6 1.6 1.6
17
REGOFF
(Connecting to ground)
-
0
0
0
18
REGC
Regurator bypass
capacitor
capacitor
-
3.7 3.7 3.7
19
VDD
+5V digital power supply
-
5.0 5.0 5.0
20
AUTO/MANUA
L
L
L : Manual A/C, H : Auto
A/C
A/C
I
4.1 4.1 4.1
21
LH/RH
L : Right Handle, H :
Left Handle
Left Handle
I
4.2 4.2 4.2
22
LCD-CE
LCD driver chip enable
O
0
0
0
23
NC
No connection
-
-
-
-
24
SEC-CS
Secyrity PROM chip select
O
0
0
0
25
SEC-CLK
Security data shift clock
O
0
0
0
26
SEC-DI
Security data
O
0
0
0
27
SEC-DO
Security data
I
0
0
0
28
NC
No connection
-
-
-
-
29
NC
No connection
-
-
-
-
30
POWER
Power switch
I
4.2 4.2 4.2
31
ACC CONT2
Power control
O
5.0 5.0 5.0
32
ACC CONT
Power control
O
5.0 5.0 5.0
33
STBY
Power Amp stand-by
O
5.0 5.0 5.0
34
NC
No connection
-
-
-
-
35
SWD +B
SWD +B control
O
5.0 5.0 5.0
36
PLL-CE
PLL controller chip
enable
enable
O
0
0
0
37
PLL-DO
PLL data
I
0
0
0
38
PLL-CLK
PLL data shift clock
O
0
0
0
39
PLL-DI
PLL data
O
5.2 5.2 5.2
40
VSS
Ground
-
0
0
0
41
VDD
+5V digital power supply
-
5.0 5.0 5.0
42
AMNK
Not used
-
-
-
-
43
ST-IND
FM stereo detection
I
0.4 1.9
0
44
RED-LED
Red LED on/off
O
0
0
0
45
GREEN LED
Green LED on/off
O
0
0
0
46
NC
No connection
-
-
-
-
47
WP(2D/4D)
(VDD pull-up)
-
5.0 5.0 5.0
48
DSP DATA
DSP data
O
5.2 5.2 5.2
49
DSP CLK
DSPdata shift clock
O
5.0 5.0 5.0
50
NC
No connection
-
-
-
-
51
DATA-CONT
CD audio signal gate
on/off
on/off
O
0
0
0
52
DATA-IN
CD audio signal
I
0
0
0
53
NC
No connection
-
-
-
-
54
SYSACC
GA-NET power control
O
5.0 5.0 5.0
55
SET-SEC2
(Ground pull down)
-
0
0
0
56
SET-SEC1
(Ground pull down)
-
0
0
0
57-63 -
No connection
-
-
-
-
64
ILL-IN
Illumination signal
detection
detection
I
4.2 4.2 4.3
65
NC
No connection
-
-
-
-
Pin
No.
No.
Port
Descriptions
I/O
FM
(V)
AM
(V)
CD
(V)
66
A/C-IN
Air conditioner detection
I
3.4
0
0
67-69 -
No connection
-
-
-
-
70
AUX-IN
(VDD pull-up)
-
5.0 5.0 5.0
71,72 NC
No connection
-
-
-
-
73
IC/VPP
(Connecting to ground)
-
0
0
0
74
REMO
Remote signal
I
0
4.9 4.9
75
CD-ON
Not used
-
-
-
-
76
DSP INT
DSP interrupt signal
I
0.7 3.4 3.4
77-79 NC
No connection
-
-
-
-
80
VSM
Radio signal strength
I
0
1.1 0.7
81
AMP MUTE
Power Amp mute
O
0
0
0
82
AVDD
+5V analog power supply
-
5.0 5.0 5.0
83
AVREF1
+5V analog reference
voltage
voltage
-
5.1 5.1 5.1
84
AVSS
Analog ground
-
0
0
0
85
GA-IN
GA-NET data input
I
0
0
0
86
GA-OUT
GA-NET data output
O
0
0
0
87
ACC-DET
ACC level detectio
I
5.0 5.0 5.0
88
TELE IN
Telephone mute
I
5.0 5.0 5.0
89
ILLUMI-
Illumination (-)
detection
detection
I
0
0
0
90
GAIN
(+5V pull-up)
-
5.1 5.1 5.1
91
IDC EJECT
IDC eject switch
I
4.3 4.3 4.3
92
BAT-DET
Battery level detection
I
5.0 5.0 5.0
93
TEL/EJ-INT Tel. mute/eject interrupt
I
4.6 4.6 4.6
94
IDC-SI
IDC communication data
O
4.1 4.1 2.6
95
NC
No connection
-
-
-
-
96
NC
No connection
-
-
-
-
97
IDC-CLK
Clock for IDC
communication data
communication data
O
4.9 4.9 4.9
98
IDC-SO
IDC communication data
I
1.4 1.6 1.4
99
LED-DIM2
LCD power control
O
5.0 5.0 5.0
100
CD-RESET
IDC reset
O
4.9 4.9 4.9
Note : Voltage measuerments are with respect to ground, with
a voltmeter (internal resistance : 10M ohms).
a voltmeter (internal resistance : 10M ohms).
8 TERMINALS DESCRIPTION
7
HONDA / CQ-EH1280A
8.2. CD Servo Block
IC201 : MN662785TBUC
Pin
No.
No.
Port
Descriptions
I/O
Vol
(V)
(V)
1
DVDD3
+5V power supply
-
3.6
2
D0
D-RAM data
I/O
2.0
3
D1
D-RAM data
I/O
2.0
4
NWE
D-RAM data write
O
3.0
5
NRAS
D-RAM row address strobe
O
3.2
6
D2
D-RAM data
I/O
2.1
7
D3
D-RAM data
I/O
1.9
8
NCAS0
D-RAM columun address strobe
O
2.8
9
NCAS1
D-RAM columun address strobe
O
1.4
10
A8
D-RAM address
O
1.0
11-14 A7-4
D-RAM address
O
1.1
15
A9
D-RAM address
O
1.1
16-18 A0-A2
D-RAM address
O
1.1
19
A3
D-RAM address
O
1.1
20
DVSS2
Ground
-
0
21
DVDD2
+5V power supply
-
3.6
22
SPOUT
Not used
-
1.5
23
TRVP
Traverse motor control
O
1.9
24
TRVM
Traverse motor control
O
1.9
25
TRP
Trackng coil drive
O
1.9
26
TRM
Trackng coil drive
O
1.9
27
FDP
Focus coil drive
O
2.0
28
FDM
Focus coil drive
O
2.0
29
FBAL
Focus balance
O
1.9
30
TBAL
Tracking balance
O
1.9
31
CSEL
(Connecting to VDD)
-
3.6
32
FE
Focus error
I
2.0
33
TE
Tracking error
I
1.9
34
RFENV
RF envelope
I
1.9
35
OFT
Off track signal
I
0
36
NRFDET
RF detecting signal
I
0
37
BDO
Drop-out signal
I
0
38
LDON
Laser on signal
O
3.6
39
ARF
RF signal
I
1.9
40
IREF
Reference current input
I
1.2
41
ADPVCC
(Connecting to ground)
-
0
42
DSLF
Loop filter for DSL
-
2.0
43
DRF
Loop filter for DSL
-
2.2
44
PLLF
Loop filter for PLL
-
1.3
45
VCOF
VCO filter
-
1.3
46
AVDD2
+5V power supply
-
3.6
47
AVSS2
Ground
-
0
48
OUTL
L channel output
O
1.8
49
AVSS1
Ground
-
0
50
OUTR
R channel output
O
1.8
51
AVDD1
+5V power supply
-
3.5
52
FSEL
(Connecting to P3V)
-
3.7
53,54 -
(Connecting to ground)
-
0
55
FLAG
Flag output
O
0
56
CLVS
Servo status signal
O
3.6
57-60 -
Not used
-
-
61
MCLK
Clock for I/F command
I
2.4
62
MDATA
Date for I/F command
I
1.9
63
MLD
I/F command load
I
3.5
64
BLKCK
Subcode block clock
O
0
65
SQCK
Ext.clock for sub code-Q
I
3.5
66
SUBQ
Code for sub. code-Q
O
1.1
67
DMUTE
Mute input
I
0
68
STAT
Status signal
O
1.1
69
NRST
Reset input
I
3.6
70
SPPOL
Not used
-
-
71
PMCK
Clock output
O
2.0
72
SMCK
Clock output
O
1.9
73
SDATA
Serial data
O
0
74
LRCK
LR clock
O
0
75
BCLK
Bit clock
O
0
76
/TEST
(Connecting to VDD)
-
1.5
77
X1
Crystal oscillator
-
1.8
78
X2
Crystal oscillator
-
1.8
Pin
No.
No.
Port
Descriptions
I/O
Vol
(V)
(V)
79
DVDD1
+5V power supply
-
3.6
80
DVSS1
Ground
-
0
IC301 : C2BBGF000364
Pin
No.
No.
Port
Descriptions
I/O
Vol
(V)
(V)
1
PS
Motor power save
O
3.5
2
BR
Brake mode selection
O
0
3
GCTL
Motor G-control
O
1.6
4
SPCCTL
Motor speed control
O
3.5
5
-
Not used
-
-
6
MCLK
Clock for I/F command
O
2.9
7
MDATA
Data for I/F command
O
1.9
8
MLD
I/F command losd
O
3.5
9
VSS0
Ground
-
0
10
VDD0
+3V power supply
-
3.5
11
STAT
Status signal
I
1.2
12
FLOCK
Focus servo lock
O
0
13
TLOCK
Tracking servo lock
O
0
14
SENS
Servo status
O
0
15
SIM
CD changerserial data
I
3.1
16
SOM
CD changerserial data
O
2.2
17
SCKM
Serial data shift clock
I
3.2
18
SUBQ
Code for sub. code-Q
I
1.7
19
-
Not used
-
-
20
SQCK
Ext. clock for sub. code-Q
O
3.6
21
NRST
Reset output
O
3.6
22
DMUTE
Mute output
O
0
23
MUTE
Mute output
O
0
24
VDD1
+3V power supply
-
3.5
25
AVSS1
Ground
-
0
26
SW15
Feeder SW
I
3.6
27
SW3
Tray H SW
I
3.5
28
SW4
Disc push SW
I
0.5
29
SW5
Disc SW
I
0
30
SW6
Disc load SW
I
0
31
SW7
Eject SW
I
0
32
SW13
Eject2 SW
I
0
33
CLVS
Servo status
O
3.6
34
AVREF
+3V power supply
-
3.6
35
-
Not used
-
-
36
/RESET
Reset
I
3.6
37
XT2
Not used
-
-
38
XT1
(VDD pull-up)
-
3.6
39
IC(VPP)
(Connecting to ground)
-
0
40
X2
Crystal Osillator
-
2.1
41
X1
Crystal Osillator
-
1.8
42
VSS1
Ground
-
0
43
CDON
CD changer start/stop
I
3.1
44
BLKCK
Sub. code block clock
I
0
45
FG
Flag signal
I
1.9
46
BD0
Drop-out signal
I
0
47
FR
Revolution detection
I
0
48
TRV
Forced traverse control
O
1.9
49
PWM
Not used
-
-
50
VMI+
Horizontal motor control
O
0
51
VMI-
Horizontal motor control
O
0
52
MUTE1
Mute output
O
3.6
53
LODI+
Loading motor control
O
0
54
LODI-
Loading motor control
O
0
55
HMI+
Vertical motor control
O
0
56
HMI-
Vertical motor control
O
0
57
SW1
Inner SW
I
3.6
58
SW2
TrayG SW
I
0
59
SW8
Play SW
I
0
60
SW9
Clump SW
I
3.6
61
SW10
Shuter SW
I
3.6
62
SW11
Horizontal origin SW
I
3.6
63
SW12
Outer2 SW
I
3.7
64
SW14
Outer SW
I
3.6
8
HONDA / CQ-EH1280A
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