Sony CMT-EP30 / CMT-EP40 / HCD-EP30 / HCD-EP40 Service Manual ▷ View online
25
HCD-EP30/EP40
6-11.
IC PIN FUNCTION DESCRIPTION
•
DISPLAY BOARD IC601
µ
PD753016AGC-F31-3B9 (SYSTEM CONTROLLER, LIQUID CRYSTAL DISPLAY DRIVER)
Pin No.
Pin Name
I/O
Description
1 to 20
S12 to S31
O
Segment drive signal output to the liquid crystal display (D621)
21 to 24
COM0 to COM3
O
Common drive signal output to the liquid crystal display (D621)
25
BIAS
O
Bias output for the liquid crystal display drive
26 to 28
VLC0 to VLC2
I
Input terminal for doubler circuit capacitor connection to develop liquid crystal display drive
voltage
voltage
29
TUNER
O
Power on/off control signal output for the tuner section “L”: power on
30
TAPE
O
Audio line muting on/off control signal output “L”: muting on
31
CD
O
Power on/off control signal output for the CD section “L”: power on
32
TIMER STATUS
O
LED drive signal output of the TIMER indicator (D619) “L”: LED on
33
VSS
—
Ground terminal
34
CD-RESET
O
Reset signal output to the CD section “L”: reset
35
SURROUND
O
Not used (pull up)
36
PLL CL
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC102)
37
PLL DI
O
PLL serial data output to the FM/AM PLL (IC102)
38
TUNER SD
I
FM and AM signal meter voltage detection input from the LA1823 (IC101)
39
CLOCK
O
Serial data transfer clock signal output to the LC75392 (IC203)
40
DATA
O
Serial data output to the LC75392 (IC203)
41
STEREO
I
FM stereo detection signal input from the LA1823 (IC101) “L”: stereo
42
CD CLOCK
I
Serial data transfer clock signal input from the CD section
43
RDS CLOCK
I
Serial data transfer clock signal input from the RDS decoder (IC604)
(RDS decoder is HCD-EP40 only)
(RDS decoder is HCD-EP40 only)
44
REMOTE
I
Remote control signal input from the remote control receiver (RM601)
45
SYNCRO
I
Recording on detection signal input
46
MUTE
O
Audio line muting on/off control signal output “H”: muting on
47
PLLCE
O
PLL chip enable signal output to the FM/AM PLL (IC102) “H” active
48
CE
O
Chip enable signal output to the LC75392 (IC203) “H” active
49
SHRST
O
Not used (open)
50
RDS DATA
I
Serial data input from the RDS decoder (IC604) (RDS decoder is HCD-EP40 only)
51
PSW
O
System power on/off control signal out “H”: power on
52
BASS BOOST
O
Mega bass on/off selection signal output “H”: mega bass on
53
DPSW2/SLEND
I
CD lid open/close detection switch (SW600) input terminal “L”: CD lid is closed
54
VDD
—
Power supply terminal
55
XT1
I
Power failure detection input terminal “L”: power failure, “H”: power on
56
XT2
O
Not used (open)
57
IC
—
Internal connection terminal (connected to power supply)
58
X1
I
Main system clock input terminal (6 MHz)
59
X2
O
Main system clock output terminal (6 MHz)
60
PLLDO SELECT
I
PLL serial data input from the FM/AM PLL (IC102)
61
CD DATA
I/O
Two-way data bus with the CD section
62
NC
—
Not used (open)
63
12/24H SELECT
I
Not used (fixed at “H”)
64 to 67
KEY R0 to
KEY R4
I
Key return signal input from the key matrix “L” input when key pressing
68
CPU RESET
I
System reset signal input from the reset signal generator (IC603) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
69 to 80
S0 to S11
O
Segment drive signal output to the liquid crystal display (D621)
26
HCD-EP30/EP40
12
3
5
1
2
11
10
9
8
7
6
#1
#1
#4
#2
#2
#2
#2
#3
#5
Front panel section
CD cabinet section
#3
#3
#1
TR401
7-1. CABINET SECTION
SECTION 7
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-451-162-00 WASHER
2
4-235-952-01 AC CORD HOLDER
3
4-236-194-01 EMBLEM BADGE
5
A-4726-713-A MAIN BOARD, COMPLETE (EP40)
5
A-4726-786-A MAIN BOARD, COMPLETE (EP30: AEP, UK)
5
A-4726-868-A MAIN BOARD, COMPLETE
(US, CND, SP, EA, TW, MX, AR, AUS)
0 6
1-555-750-00 CORD, POWER (AEP, UK, EA, SP)
0 6
1-696-966-31 CORD, POWER (AUS)
0 6
1-783-525-31 CORD, POWER (TRACKING) (TW, MX)
0 6
1-783-820-11 CORD, POWER (US, CND)
0 6
1-783-940-51 CORD, POWER (AR)
7
4-235-974-01 CAB, ANTENNA COVER
8
1-823-170-11 CORD (WITH CONNECTOR) (FM ANT)
9
4-235-972-01 REAR CABINET (AEP, UK)
9
4-236-544-01 REAR CABINET
(US, CND, EA, SP, AR, TW, MX, AUS)
10
4-235-995-01 RUBBER FOOT
11
4-235-944-01 POWER PWB MOUNTING BKT
12
A-4726-866-A POWER BOARD, COMPLETE
(US, CND, MX, TW)
12
A-4726-715-A POWER BOARD, COMPLETE
(AEP, UK, EA, SP, AR, AUS)
0 TR401
1-437-463-11 TRANSFORMER, POWER
(AEP, UK, EA, SP, AR, AUS)
0 TR401
1-437-476-11 TRANSFORMER, POWER (US, CND, TW, MX)
• Abbreviation
AR
: Argentina model
AUS : Australian model
CND : Canadian model
CND : Canadian model
Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
critical for safety.
Replace only with part number
specified.
EA
: Saudi Arabia model
MX : Mexican model
SP
: Singapore model
TW : Taiwan model
27
HCD-EP30/EP40
7-2. FRONT PANEL SECTION-1
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
4-235-953-01 VOL. SWING KNOB
52
4-235-950-01 SWING SHAFT
53
4-235-939-01 VOL. DECORATION RING
54
4-236-068-01 DISPLAY WINDOW (EP30)
54
4-236-070-01 DISPLAY WINDOW (EP40)
55
4-224-104-41 DAMPER
56
4-236-067-01 CASS LID WINDOW (EP30)
56
4-236-069-01 CASS LID WINDOW (EP40)
57
4-235-976-01 CASS LID (EP30)
57
4-235-979-01 CASS LID (EP40)
58
4-235-940-01 CASS LID BKT
59
4-235-981-01 CASS LID SPRING
60
4-235-941-01 MAIN PWB MOUNTING BKT (A)
61
4-235-942-01 CASS PWB MOUNTING BKT (A)
62
A-4726-711-A CASSETTE BOARD, COMPLETE
63
4-235-947-01 CASS PWB MOUNTING BKT (B)
64
1-796-190-11 DECK, MECH (TAPE)
65
4-235-951-01 VOL. SWING LEVER
66
4-235-989-01 VOLUME KNOB SPRING
67
4-235-954-01 CASS KEY (PAUSE)
68
4-235-955-01 CASS KEY (STOP/EJECT)
69
4-235-956-01 CASS KEY (FF)
70
4-235-957-01 CASS KEY (REW)
71
4-235-958-01 CASS KEY (PLAY)
72
4-235-959-01 CASS KEY (REC)
67
68
69
70
71
72
54
55
56
57
58
59
60
61
62
63
64
65
66
51
52
53
#1
#2
#1
#10
#6
not supplied
28
HCD-EP30/EP40
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
7-3. FRONT PANEL SECTION-2
101
4-235-995-01 RUBBER FOOT
102
4-235-975-01 FRONT PANEL (EP30)
102
4-235-978-01 FRONT PANEL (RDS) (EP40)
103
A-4726-714-A HEADPHONE BOARD, COMPLETE
104
4-235-968-01 TAPE KEY CAP
105
4-235-946-01 FUNCTION KEY BKT
106
4-235-966-01 CD KEY CAP
107
4-235-967-01 TUNER KEY CAP
108
4-235-963-01 PLAY/STOP KNOB
109
4-235-962-01 SKIP/SEARCH KNOB
110
4-235-943-01 MAIN PWB MOUNTING BKT (B)
111
A-4726-712-A DISPLAY BOARD, COMPLETE (EP40)
111
A-4726-785-A DISPLAY BOARD, COMPLETE (EP30: AEP, UK)
111
A-4726-867-A DISPLAY BOARD, COMPLETE (US, CND)
111
A-4726-869-A DISPLAY BOARD, COMPLETE
(SP, EA, AUS, TW, MX, AR)
112
4-235-965-01 SLIDE KNOB
113
4-235-961-01 BASS/SELECT KNOB
114
4-235-964-01 PRESET UP/DOWN KNOB
115
4-235-994-01 PANEL FIXING PLATE
116
4-235-960-01 POWER KNOB
113
114
115
102
115
115
103
116
104
106
107
105
109
108
110
111
112
101
#4
#4
#4
#4
#11
not supplied
#1
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