Panasonic CQ-EH84611A Service Manual ▷ View online
6 BLOCK DIAGRAM (Main, Display Block)
5
HONDA / CQ-EH84611A
7.1. Main Block
IC601 : C2CBJH000078
Pin
No.
Port
Description
I/O
(V)
FM AM CD TA
PE
1
DSP-
RESRT
RESRT
DSP reset output
H: Normal
L: Reset
H: Normal
L: Reset
O
4.8 4.8 4.8 4.7
2
IDC-
ST/STO
P
ST/STO
P
IDC CPU stop-mode realese
signal output
H: Stop-mode release
L: IDC CPU stop-mode
signal output
H: Stop-mode release
L: IDC CPU stop-mode
O
4.8 4.7 4.7 4.7
3
T.LOAD Cassette loading position
detection
H: Carriage is at the eject
completion position
L: Other
H: Carriage is at the eject
completion position
L: Other
I
4.8 4.8 4.8
0
4
BLANK
For LCD driver RST terminal
control
control
O
4.8 4.8 4.8 4.8
5
SEC-
LED
LED
Security led control output
L: Led lights on
H: Led lights off
L: Led lights on
H: Led lights off
O
4.8 4.8 4.8 4.8
6
VOL A
Encoder input(A)
I
0.4 0.4 5.0 5.0
7
VOL B
Encoder input(B)
I
0.4 0.4 0.4 0.4
8
LCD-
CLK
CLK
LCD driver clock signal output
O
0
0
0
0
9
LCD-DI
LCD driver data signal input
for AUDIO display
for AUDIO display
I
5.2 5.0 5.0 5.0
10 LCD-DO LCD driver data signal output
for AUDIO display
O
5.0 4.8 4.8 3.8
11 RESET
System reset input
I
5
4.8 4.8 4.8
12 XT2
Crystal connection for
subsystem clock
oscillationUses 32.768kHz
subsystem clock
oscillationUses 32.768kHz
-
2.0 2.0 2.0 1.7
13 XT1
Crystal connection for
subsystem clock
oscillationUses 32.768kHz
subsystem clock
oscillationUses 32.768kHz
I
1.4 1.4 1.4 1.4
14 VSS
GND
-
0
0
0
0
15 X2
Crystal connection for the
main system clock
oscillationUses 12.58MHz
main system clock
oscillationUses 12.58MHz
-
1.6 1.6 1.6 1.6
16 X1
Crystal connection for the
main system clock
oscillationUses 12.58MHz
main system clock
oscillationUses 12.58MHz
I
1.4 1.4 1.4 1.4
17 REGOF
F
(Connecting to GND)
-
0
0
0
0
18 REGC
Capacity connection for
regulator output stability
andpower for when the
regulator stops
regulator output stability
andpower for when the
regulator stops
-
3.5 3.5 3.5 3.5
19 VDD
Positive power supply
-
4.9 4.9 4.9 4.9
20 THEAT
ER
(NC)
(NC)
No Connection
-
-
-
-
-
21 PLFF
Signal detection sensitivity
switch outputs betweentunes
in the cassette
H: FF/REW
L: Play
switch outputs betweentunes
in the cassette
H: FF/REW
L: Play
O
0
0
0
0
22 LCD-CE LCD driver CE signal output
for AUDIO display
O
0
0
0
0
23 DOLBY Cassette dolby B control
output
H: Dolby B OFF
L: Dolby B ON
H: Dolby B OFF
L: Dolby B ON
O
0
0
0
0
24 SEC-CS EEPROM CE signal output
O
0
0
0
0
25 SEC-
CLK
EEPROM clock signal output
O
0
0
0
0
26 SEC-DI EEPROM data signal input
I
0
0
0
0
27 SEC-DO EEPROM data signal output
O
0
0
0
0
28 VOL-C
Encoder input(C)
I
5.0 5.0 5.0 5.0
Pin
No.
Port
Description
I/O
(V)
FM AM CD TA
PE
29 VOL-D
Encoder input(D)
I
5.0 5.0 5.0 5.0
30 F/R
Output control on cassette
eject side (upper/lower)
H: Side B
L: Side A
eject side (upper/lower)
H: Side B
L: Side A
O
0
0
0
0
31 EQMLT Cassette equalizer switch
output
H: Normal
L: Metal
H: Normal
L: Metal
O
0
0
0
4.8
32 ACC-
CONT
ACC on control signal output
H: ACC ON
L: ACC OFF
H: ACC ON
L: ACC OFF
O
4.8 4.8 4.8 4.8
33 AMPST
BY
Power IC control signal output
H: AMP ON
L: AMP OFF
H: AMP ON
L: AMP OFF
O
4.8 4.8 4.8 4.8
34 LCD-ON LCD backlight control signal
output for audio display
H: ON
L: OFF
H: ON
L: OFF
O
4.8 4.8 4.8 4.8
35 SW +B
SW+B emit signal output
H: PWR ON L: PWR OFF
H: PWR ON L: PWR OFF
O
4.8 4.8 4.8 4.8
36 PLL-CE PLL IC CE signal output
O
0
0
0
0
37 PLL-DO PLL IC data signal output
O
0
0
0
0
38 PLL-
CLK
PLL IC clock signal output
O
0
0
0
0
39 PLL-DI
PLL IC data signal input
I
5.0 5.0 5.0 5.0
40 VSS
Ground
-
0
0
0
0
41 VDD
Positive power supply
-
4.9 4.9 4.9 4.9
42 M2F
Speed control output of
cassette main motor
H: 3 speeds
L: 1 speed
cassette main motor
H: 3 speeds
L: 1 speed
O
0
0
0
0
43 ST-IND
FM stereo indicator input
H: Stereo
L: Monaural
H: Stereo
L: Monaural
I
0.2 1.8
0
0
44 A/B
Sensor inputs for sides A and
B
H: Plays side A-A side is FF
and B side is REW
L: Plays side B-B side is FF
and A side is REW
B
H: Plays side A-A side is FF
and B side is REW
L: Plays side B-B side is FF
and A side is REW
I
0
0
0
0
45 MSM
Signal detection sensitivity
switch outputs betweentunes
in the cassette
H: 1 speed L: 3 speeds
switch outputs betweentunes
in the cassette
H: 1 speed L: 3 speeds
O
4.8
0
0
4.8
46 T-IN
Cassette holder position
detection
H: Not inserted
L: Inserted
detection
H: Not inserted
L: Inserted
I
0
0
0
0
47 WP
Input for EEPROM write
protection
H: Not possible
L: Possible
protection
H: Not possible
L: Possible
I
4.8 4.8 4.8 4.8
48 DSP-
DATA
DSP DATA signal output
I/O
5.0 5.0 5.0 5.0
49 DSP-
CLK
DSP CLK signal output
O
4.9 4.8 4.7 4.8
50 MUTE
Mute output terminal
H: Mute on
L: Mute off
H: Mute on
L: Mute off
O
0
0
0
0
51 DATA
CONT
Data reception control signal
output for ROM collection
H: Receiving
L: Not receiving (normal)
output for ROM collection
H: Receiving
L: Not receiving (normal)
O
0
0
0
0
52 DATA
IN
Data reception inputs for ROM
collection
collection
I
0
0
0
0
53 BIT3
Rotary switch 3
(cassette mode detection)
I
0.3 0.3 0.3
0
7 TERMINALS DESCRIPTION
6
HONDA / CQ-EH84611A
Pin
No.
Port
Description
I/O
(V)
FM AM CD TA
PE
54 SYSAC
C
System ACC(GA-NET) control
signal output
H: ON
L: OFF
signal output
H: ON
L: OFF
O
4.8 4.8 4.8 4.8
55 SET-
SEC2
(Pull down)
I
0
0
0
0
56 SET-
SEC1
(Pull down)
I
0
0
0
0
57 BIT2
Rotary switch 2
(cassette state mode
detection)
(cassette state mode
detection)
I
0
0
0
4.5
58 A-END
Reel rotorplatform pulse input
(tape end detection)
H
(tape end detection)
H
→
L
→
H
→
L: Reel stand A
rotatesIn
H or L: Reel stand A does not
rotate.
H or L: Reel stand A does not
rotate.
I
0
0
0
0
59 BIT1
Rotary switch 2
(cassette mode detection)
(cassette mode detection)
I
0
0
0
4.5
60 B-END
Reel rotorplatform pulse input
(tape end detection)
H
(tape end detection)
H
→
L
→
H
→
L: Reel stand B
rotatesIn
H or L: Reel stand B does not
rotate.
H or L: Reel stand B does not
rotate.
I
0
0
0
1.2
61 EQ
Cassette equalizer detection
H: Metal
L: Normal
H: Metal
L: Normal
I
0
0
0
0
62 NC
No Connection
-
-
-
-
-
63 NC
No Connection
-
-
-
-
-
64 ILL IN
Illmi input
H: Ilmi on
L: Ilmi off
H: Ilmi on
L: Ilmi off
I
0
0
0
0
65 NC
No Connection
-
-
-
-
-
66 M1-B
Cassette loading motor control
output
output
O
0
0
0
0
67 NC
No Connection
-
-
-
-
-
68 NC
No Connection
-
-
-
-
-
69 NC
No Connection
-
-
-
-
-
70 M1-A
Cassette loading motor control
output
output
O
0
0
0
0
71 NC
No Connection
-
-
-
-
-
72 NC
No Connection
-
-
-
-
-
73 IC/VPP
(connecting to GND)
I
0
0
0
0
74 REMOT
E
Steering remote control input
I
4.8 4.8 4.8 4.8
75 TAPE
EJECT
Eject button input
H: OFF
L: ON
H: OFF
L: ON
I
4.8 4.8 4.8 4.8
76 DSP
INT
DSP power detection
inputH:DSP on
L:DSP off
inputH:DSP on
L:DSP off
I
3.2 3.2 3.2 3.2
77 VS
Signal detections between
tunes in the cassette
H: No sounds
L: With sounds
tunes in the cassette
H: No sounds
L: With sounds
I
0
0
0
0
78 M2
Main motor control signal
output
H: ON
L: OFF
output
H: ON
L: OFF
O
0
0
0
4.8
79 CAPON Cassette voice power control
output
H: ON
L: OFF
H: ON
L: OFF
O
0
0
0
4.8
80 VSM
Radio electric field strength
input
input
I
0.3 0.6
0
0
81 AMP
MUTE
Amplifier MUTE control signal
outputH: Mute onL: Mute off
outputH: Mute onL: Mute off
O
0
0
0
0
82 AVDD
Positive power for A/D
converter
converter
-
4.9 4.9 4.8 4.8
83 AVREF1 Reference voltage impression
for A/D converter
-
4.8 4.8 4.8 4.8
Pin
No.
Port
Description
I/O
(V)
FM AM CD TA
PE
84 AVSS
GND for A/D converter
-
0
0
0
0
85 GA-IN
IEBus data input
I
0
0
0
0
86 GA-OUT IEBus data output
O
0
0
0
0
87 ACC-
DET
ACC detection input
H:ACC ON
L:ACC OFF
H:ACC ON
L:ACC OFF
I
4.8 4.8 4.8 4.8
88 TELMU
TE
TELMUTE interrupt signal
input
H: Normal
L: TELMUTE interruption
input
H: Normal
L: TELMUTE interruption
I
4.8 4.8 4.8 4.8
89 ILL-
(Pull down)
I
0
0
0
0
90 GAIN
Gallium inspection data input
I
5.0 5.0 5.0 5.0
91 IDCEJE
CT
EJECT button input
H: Button off
L: Button on
H: Button off
L: Button on
I
4.8 4.8 4.8 4.8
92 BAT-
DET
+B detection input
H: +B on
L: +B off
H: +B on
L: +B off
I
4.8 4.8 4.8 4.8
93 EJECT-
INH
Detection input of eject button
and telematic interruptions
H: Button off and telematic
interruptions are off
L: Button on or telematic
interruptions are on
and telematic interruptions
H: Button off and telematic
interruptions are off
L: Button on or telematic
interruptions are on
I
4.8 4.8 4.8 4.8
94 IDC-SI
CD serial communication data
input
input
I
4.9 4.0 3.0 3.9
95 CN-ON
Cassette mechanism power
control output
H: ON
L: OFF
control output
H: ON
L: OFF
O
0
0
0
4.7
96 NC
(TXD)
-
-
-
-
-
-
97 IDC-
CLK
CD serial communication clock
output
output
O
4.8 4.7 4.7 4.7
98 IDC-SO CD serial communication data
output
O
0
1.1 1.4 1.3
99 LCD-
DIM
(NC)
(NC)
No Connection
-
-
-
-
-
100 CD-RST CD deck microcomputer reset
output
H: Normal
L: Reset
H: Normal
L: Reset
O
4.8 4.7 4.7 4.7
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
7
HONDA / CQ-EH84611A
8 PACKAGE AND IC BLOCK DIAGRAM
8.1. Main Block
PK50 : YEP0PTA514B0
IC191 : YEAMHA12181F
8
HONDA / CQ-EH84611A
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