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B
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87654321
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ISSUE
DRAWING NO.
DRAWING TITLE
Drawn by:
DATE
Filename
ECO No. DESCRIPTION OF CHANGE
G:\DATA\ECO\ECO AGENDA\00 1093 L887PB 2\L887 2\L887 2.ddb - L887c4 2.sch
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
CD72, CD92 CD Players
Circuit Diagram
L887C4_2
CW12-Oct-2000
INITIALS
Date Printed
4 4Sheet of
Notes
TIMER
1
RMIN
2
+5V
3
NC
4
NC
5
M/C
6
POML
7
CLK
8
SENSE
9
DATA
10
SQCK
11
SUBQ
12
NC
13
AMUTE
14
LDON
15
XLT
16
NC
17
R11
18
R12
19
R13
20
R14
21
KEY0
22
KEY1
23
KEY2
24
KEY3
25
+5V
26
+5V
27
AF ADJ
28
IN/OUTSW
29
RST
30
EXTAL
31
XTAL
32
VSS
33
RO1
34
RO2
35
RO3
36
RO4
37
DEEM
38
NC
39
SMUTE
40
NC
41
NC
42
P1
43
P2
44
P3
45
P4
46
P5
47
P6
48
P7
49
P8
50
P9
51
P10
52
P11
53
P12
54
P13
55
P14
56
P15
57
NC
58
NC
59
NC
60
NC
61
NC
62
10
63
20
64
30
65
40
66
50
67
60
68
70
69
80
70
-30v
71
+5V
72
+5V
73
+5V
74
+5V
75
LOADIN
76
LOADOUT
77
SCOR
78
SEL2
79
SEL1
80
Z212
Comment
VF
1
VF
2
3
80
4
P15
5
P14
6
P13
7
8
P12
9
70
10
P11
11
60
12
P10
13
P9
14
50
15
P8
16
40
17
P7
18
P6
19
20
P5
21
30
22
P4
23
20
24
P3
25
P2
26
10
27
P1
28
29
-88 8888
88
VF
30
VF
31
DISC
SHUFFLE
> ||
DISP301
B1008
30
40
50
60
70
80
+
C292
100U EL
C291
47N CD
C293
47N CD
X201
CST4.00
C294
47N CD
R295
10K MF
R296
10K MF
R297
10K MF
R298
10K MF
R292
8K2 MF
R293 8K2 MF
R294 1K0 MF
D291
1N4148
D292
1N4148
D293
1N4148
D294
1N4148
D295
1N4148
D296
1N4148
D297
1N4148
R1
R2
R3
R4
R1
R2
R3
R4
C0' C1' C3'
C4'
C0
C2
C7
R308
8K2 MF
R313
8K2 MF
R307
1K2 MF
R306
1K5 MF
R305
2K2 MF
R304
3K3 MF
R303
5K6 MF
R302
12K MF
R301
33K MF
NEXT PREV FF FR PAUSE STOP PLAY OPEN
R11
R12
R13
R14
NOUT
DEEM
SMUTE
XRST
4MHZ
R291 3R3 FU
SW301 SW302 SW303 SW304 SW305 SW306 SW307 SW308
FILA
FILB
Flexfoil connector to Display PCB
P5V
K0
K1
K0
K1
R314
220R MF
P5V
N30V
INOUT
LDIN
LDOUT
4MHZ
P1
P3
P4
P6
P8
P9
P10
P12
P14
P15
20
40
50
60
70
P2
P5
P7
P11
P13
10
30
80
20
10
P15
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
R11
R12
R13
R14
XLT
LDON
AMUTE
SUBQ
SQCK
DATA
SENSE
CLK
PGML
LDIN
LDOUT
SCOR
RM N
INOUT
LDIN
LDOUT
DEEM
SMUTE
AMUTE
4MHZ
RM N
PGML
CLK
DATA
SMUTE
PGML CLK DATA
DEEM
RMIN
4MHZ
D80
D70
D60
D50
D40
D30
D20
D10
DP1
DP2
DP3
DP4
DP5
DP6
DP7
DP8
DP9
DP10
DP11
DP12
DP13
DP14
DP15
D80
D70
D60
D50
D40
D30
D20
D10
DP1
DP2
DP3
DP4
DP5
DP6
DP7
DP8
DP9
DP10
DP11
DP12
DP13
DP14
DP15
R71
8K2 MF
R61
8K2 MF
Q_
Q_2
Q_3
Q_4
Q_5
Q_6
Q_7
Q_8
Q_9
Q_10
Q_11
Q_12
AMUTE
K0M
K1M
DEEM
TP12
R63
33K MF
Microcontroller & Display
C57
10N CD
- WF 07-04-00 A
NEW PROTOTYPE
DEEM
AMUTE
SMUTE
RMIN
PGML
CLK
DATA
SCOR
SQCK
XRST
LDON
XLT
SENSE
SUBQ
SCOR
SQCK
XRST
LDON
XLT
SENSE
SUBQ
3
2
1
+5V
O/P
GND Case
RX201
SBX1610-52
C52
10N CDLED201
LED ULTRARED
Alpha 8 only
R50
100K MF
RA2
1
RA3
2
RTCC
3
MCLR
4
VSS
5
RB0
6
RB1
7
RB2
8
RB3
9
RB4
10
RB5
11
RB6
12
RB7
13
VDD
14
OSC2
15
OSC1
16
RA0
17
RA1
18
Z211
PIC16C54XT
RA0
AMUTE
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
RMIN
R54
330R MF
XRST
HDCD
4MHZ
R59
330R MF
HDCD
REMIN
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
P5V
R27
100K MF
P5V
RA0
+
C53
22U EL OS
DEEM
REM
REM1
DISGND
KEYGND
HDCD1
DIS5V
DISGND
+
C71
10U EL
KEYGND
C70
100N CD
+
C72
10U EL
R300
10R MF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SK291
FFC32V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SK301
FFC32H
CL 13-07-00 REVISIONS B
LED301
LED GREEN3.1MM
CL 03-08-00 PRODUCTION RELEASE 1
C62
100P CD
D25
1N4148
P5V
00_1083
CL 15-09-00 EARTH L NK 8M101 ADDED 1.1
TRACKS MOVED TO CLEAR P LLARS & C64 ADDED FOR EMC00_1093 211-10-00CW
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