Download Service Manual CDP

i
I FILE NO.
CDP-I 50
Portable Compact
Disc Player
Service Manual
I
-
(
XE )
[:$;
(SP)
(AU)
PRODUCT
142
Specifications
Responce
Sampling
989
( General )
( CD Player Section )
Wow&Flutter
02 (XE)
03 (UK)
142 989 04 (SS)
142 989 05 (SP)
142 989 06 (AU)
142
Frequency
989
. .
.... ...
Frequency
.
20-20,000
Maximum
Hz
Output
Below measurable
(stereo headphone)
limits
Power Supply
44.1 kHz
AC Adaptor
. ..
... .. . . ..
15 mw
+ 15 mw
AC :230
V, 50
V, 50 Hz (AU)
Hz
(XE/UtVSP)
DIA Converter
..... ..
1-bit
AC :240
Error Correction
Method
CIRC
AC :11 5/230 V, 50/60
Pick-up
....... .... .
...... ...
DC
Optical 3-beam
Semi-conductor
Laser output
No.
CODE
.. . . .. . .... .. . ..
3 V : Using two “AA” batteries
(790 nm wavelerrgth)
nickel-cadmium
Continuous
... .. .. ..
Approx.
142(
. .. .. ... .. . ..
Approx.
320 g (Without
max. 0.5 mW
(SS)
3 V : Using the rechargeable
laser
wave:
t-iz
Dimensions
Weight
battery (only SS/SP)
W)x35(H
)x160(D)
batteries,
main unit only)
Specifications
subject to change without notia%.
REFERENCE
No.
SM580552
mm
i
LASER BEAM SAFETY PRECAUTIONS
.
Pick-up
that emits
a laser beam
is used
in this CD player.
CAUTION :
USE OF CONTROLS
OR ADJUSTMENTS
OR PERFORMANCE
OF PROCEDURES
OTHER THAN THOSE SPECIFIED
HEREIN MAY RESULT
RADIATION
IN HAZARDOUS
EXPOSURE
LASER OUTPUT ........0.5 mW
WAVELENGTH
Max.
(CW)
...........790 nm
G
CAUTION - INVISIBLE !MER RADIATION
WHEN OPEN AND lNlEi3LOCKS DEFEATED.
AOVARSEL - USiNLIG USER STEALING VED ABNING,
NdRSIXKEFMEDSAF6RYDERE
ERuDE AF FUNICTION,
I
I
VARNING - OSYNLIG LMER STRAINING NiR
iR OPPNAO
ocHSPF.RR
iR URKOppLAO.
DENNA DEL
STRALEN iR FARUG
vORSICHT - UNSICHTSARE U. SEFiSTRAHLUNGTRffl AUS,
WENN
OECKEL
GEOFFNET
UNO
WENN SICHERHEITSVERRIEGELUNG
iIBER8RtiCKT 1ST.NICHT, DEM STRAHL AUSSHZEN.
JASUOJALUKITUS
O~fTETTAESSA
OLET
ALT711NA
NAKYMASTOMALLE
LASERSiTEILYLLE.
ALAKATsO
SATEESEEN.
V~RO !-. AVAITAESSA
NOTES (ACCESSORIES
& CONNECTION)—
1. Disc Compamnent
Barte~ Compartment (bottom)
PLAYIPAUSE Button
STOP Bunon
F 9ACK/F FvVD Burtons
SET Button
I@:P.MODE Button
2.
3.
4.
.....................................................
~AC adaptor
:@
...................................... ........
8.
9.
10.
11.
Display
VOLUME Con[rot
PHONES Jack
LINE OUT Jack
12.
9ASSXPANDER
Switch
13. DC 6V Jack
II
Rechargeable nickel-cadmium
battery (NBP-30E)
?arl No. 645012 1180
(only
\
11’
@@7@
U
-.
.
—’
Headphones
Part No. 6142527764
/)
II
-
ij~
1
1
~:g
“
..................................
:. Always keep
: the charging
~
I terminal clean.
I
... ............ ...................
LINE OUT
a
h
E
/
Patch cable
Part No. 6450119071
Ssw)
--
-1-
\
REMOVAL
AND INSTALLATION
●
Disconnect
●
Remove the batteries.
the AC adaptor’s
●
●
All wiring should be returned to the original position after work is completed.
First have ready many the new FIXERS (614 129 4971) for replacement.
a.
CABINET, BOTTOM
(1) Remove the 5 rear cabinet
plug.
&
b. CABINET
mounting
(1) Remove
screws.
1
c. CD LID
d. CD MECHANISM
-2-
the bottom cabinet.
i
REMOVAL
AND INSTALLATION
e. CD P.W. BOARD
f. WIRING
LAYOUT
—
LIMIT
SWITCH
yRE~KET
-3-
SPINDLE
LEq:;g;ET
MOTOR
SLED MOTOR
LEAD SOCKET
( YELLOW)
i
CD MECHANISM
a. DISASSEMBLY
ADJL=TMENTS
OF THE CD
d
PLAYER MECHANISM
(a) Replacement of the spindle motor assembly
(1) While turning the turntable, align the open hole
in the turntable
fastening
(2)
of the spindle
with the position
screw.
(3)
Turn the turntable
fastening
motor
as previously
hole with the position
remove the screw.
(0)
Insert the watch repair driver from the screw fastening
hole
(4)
described,
align the screw
of the screw (@) and
(@)
Remove the spindle
motor in the direction
shown by the
and remove the screw. (~)
11~111
,,~~14——— Watch repair driver
Spindle Motor =
o
,03
Turntable
~
~
(b) Replacement
Spindle Motor
of the pick-up
(1) Remove the pick-up rail mcwtingscrew.
(2)
Remove the rack gear (104) mounting
(3)
Replacement
(4)
Insert the pick-up rail ( 107)
of the pick-up-
(0)
screws. (@)
(~)
into the base chassis.
(5) The pick-up rails have been installed,
(@)
first wipe the
tips of the rail with alcohol.
/
(6) After the pick-up has been replaced,
apply grease
(FLOIL G-474B) to the rail.
(7)
The
pick-up P.W.Board
pattern is “shorted”,
as shown
in the figure, so that the new pick-~p will not be
susceptible
(8)
to the effects of static.
Set the pattern to “open”
after the pick-up
has been
replaced.
-4-
x
,(3 ~
ii
CD MECHANISM
ADJUSTMENTS
(c) Sled motor replacement
(1) See illustration
at right.
101
REPLACEMENT
b.
AND LUBRICATION
OF THE
CD MECHANISM
. ................................... ..... ..... ..... ............... .. ... .
~Note :
:EM-50L . . . . . . . . . . . . . MOLYKOTE, EM-50L ~
~G-474B . . . . . . . . . . . . . . FLOILOIL, G-474B
:
. ............. ..... ........ ....... ....... ...................... ... .. ... .
s
................. ........... ... . ...................
-5–
i
CD MECHANISM
c. CHECKING
ADJUSTMENTS
THECD
MECHANISM
T- –113
(a) Checking
the operation
(1) Disconnect
the sled motor socket from the printed-circuit
a
of the CD mechanism
&
-110
0
board.
g
–111
B
(2) Apply a voltage of DC 0.7 V to the sled motor’s
0
terminal.
(3)
s
Measure the current during
.T’he direction
sled motor operation.
of movement
of the pick-up
inner groove) can changed
by changing
(4) The current during sled motor operation
according
to the positional
(11 Oandll
(5)
(outer groove or
the battery
–112
G-
polarity.
varies
relationship
of gears
l).
If the current exceeds
20-50
gear (lll)andgear(ll
mA , remove the
O).
(6) Apply a small amount of a FLOIL ( G-474B ) bonding
materials
(7)
to the chassis shafts.
Install the gears as shown in the illustration.
Direction
of pick-up movement
I
Outer groove
I
20-50
mA
I
I
Inner groove
I
20-50
mA
I
(b) Resetting
the pick-up
to the home
(1) The LIMIT switch is switched
sled motor continues
approximately
reverse operation,
to operate
and movement
the switch is switched
of the
pick-up, after which the
(by the circuit) for
30 milliseconds
20 -
o
position
ON by the projection
rack gear secured to the returned
(2)
I
Sled motor current
; there is then again a
to the position
112
111
at which
OFF.
Rotation continues
for about 20-
30 milliseconds
switch is switched
OFF, and then the pick-up stop at home
after the
position.
109 ( LIMIT SWITCH)
-6-
,
i
CHECKING
THE CD PLAYER
EYE PAITERN
a. PREPARATIONS
(a) Measuring
.
instruments,
/
tools and filter
(1) Test disc. : YEDS 18 (SONY) or etc.
(2) Oscilloscope
: SS5711 (10 MHz or dual-phenomenon)
or Memory scope : DSS6521
(Storagescope)
(3) Resistor, Carbon 2.2 K ohm, l/4W
(4) EXT. DC POWER : DC 6 V, 1A
b. PARTS
LOCATION
1
2.2K ohm
Ic 1131
pin 41
c.
CHECKING
THE EYE PATTERN
Connect an oscilloscope
+
wvv
(RF}
(1) Switch ON the DC power.
(2)
0
Ic ?31
I OSCILLOSCOPE I
to IC131 ( pin 41 ) ( RF)
and IC131 ( pin 58 ) ( VC ).
(3)
Load the test disc.
(4)
PLAY switch push ON.
(5)
Check to be sure that the “ eye “ pattern is at the
center of waveform
and that the diamond
shape is
clearly defined.
(6)
Press the STOP button. center
(7)
Switch OFF the DC power.
D
-7-
EXPLODED
VIEW ( CABINET
& CHASSIS
)
,—
8
–8–
PARTS
LIST
PRODUCT SAFETY NOTICE
d
Each precaution
in this manual should be followed during servicing. Components identified with the IEC symbol
~ in the parts list
and the schematic
diagram
designate
components
in which
safety
can be of special
significance.
When
replacing
a component
identified
~, use only the replacement
parts designated,
or parts with the same ratings
of resistance,
wattage
or voltage
that are
designated
in the parts list in this
parts are acceptably insulated from
CAUTION
Regular
type
Regular
type
Regular
type
Not available
N.S.P
ACKIN
Ref.
:
resistors
manual.
Leakage-current
the supply circuit before
and capacitors
or resistance
returning
the
are not listed.
Part
273
273
273
273
273
273
273
273
273
273
271
2274
2281
2311
2298
2274
2380
2397
2427
2403
2380
1026
645
011
4168
645
011
614
9880
252
7764
~645
011
8678
~645
011
8685
&645
011
8647
~645
011
8654
f!!J645
645
645
011 8326
011-9071
012 1180
276
277
Ref.
Descri~tion
No.
614
614
614
614
614
614
614
614
614
614
614
8778
9590
CARTON CASE,INNER
CARTON CASE,INNER
CARTON CASE,INNER
CARTON CASE,INNER
CARTON CASE,INNER
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
INSTRUCTION
MANUAL
No.
Part
vakses,
refer
to the
type
schematic
and
that
exposed
diagram.
Electrical
type.
5
271
273
270
270
273
0111
1758
3724
4035
1765
5
614
273
1260
5
614
273
1772
5
614
273
1765
Pati
614
614
614
614
614
614
614
Description
No.
271
271
270
270
270
125
231
0203
0210
4066
4196
4219
2285
6832
SPACER,MECHANISM
(GRAY)
SPACER,MECHANISM
(PINK)
LID,BATTERY
TERMINAL
SPRING,BATTERY(+)
TERMINAL,NI-CD
BATTERY
CUSHION,SHEET,8X26MM
LABEL,SAFETY,LASER,CLASS
\
FIXING PARTS
CAUTION,DISC,PROTECTIVE
SHEET
POLY SHEET,450X250MM,SET
(XE)
POLY SHEET,450X250MM,SET
(UK/AU/SS/SP)
HEADPHONE
(UK/AU/SP)
ADAPTOR,AC-DC,6CV-230XE,
500 MA (XE/SP)
ADAPTOR,AC-DC
,6CV-230UK,
500 MA (UK)
ADAPTOR,AC-DC,
6CV-240AU,
500 MA (AU)
ADAPTOR,AC-DC,6CV-230SS,
AC 115/230V,
DC 6V,500
MA
(ss)
PLUG,ADAPTOR,AC
(SS)
CABLE,PATCH
CA8LE,RCA-2P,Y
BATTERY,RECHARGE,2.4V,
NBP-30B
(ss/sP)
LABEL,NI-CD,BATTERY
(SP)
INSTRUCTION
SHEET,NI-CD(SP)
Ref.
No.
Part
411
Yol
Y02
41%
Description
No.
022
098
6800
SCR
S-TPG
5202
CABINET-BOTTOM
SCR S-TPG
PAN 2X5MM,
CD P.W.BOARD-BOTTOM
PAN
2X1OMM,
:D P.VV 0AR5ASSY
Ref.
No.
21
ASSY,LID,CD
ASSY,CABINET,TOP
BUTTON OPERATION
KNOB,SLIDE,BASSXPANDER
ASSY,CABINET,
BOTTOM
(XE)
ASSY,CABINET,BOTTOM
D1901
or
IC131
IC141
IC145
IC151
409
369 7000
;;512
-9-
Description
No.
271
270
011
270
011
005
005
011
005
000
000
007
012
080
080
080
080
080
080
007
012
007
012
050
007
012
350
303
361
;;511
(UK/AU)
ASSY,CABINET,BOTTOM
(ss)
ASSY,CABINET,
BOTTOM
(SP)
Part
614
614
645
614
645
645
645
645
645
645
645
40?
407
407
407
407
407
407
407
407
407
407
407
407
407
407
409
4091
409
A1501
24
CN101
CN141
CN142
CN143
CN151
CN191
CN192
D1301
or
D1401
D1402
D1403
D1404
D1405
D1406
D1407
Description
No.
614
614
614
614
614
No.
6
7
8
22
23
(XE)
(UKj
(AU)
(SS)
(5P)
(XE)
(UK)
(AU)
(SS)
(SP)
CABINET & CHASSIS
Ref.
those
resistors
are less than l/4W carbon
type and O ohm chip resistors.
capacitors
are less than 50V and less than 1000PF
type of Ceramic
as service
parts.
to determine
& ACCESSORIES
No.
614
614
1
2
3
4
To know
measurements
must be made
product to the customer.
0029
4127
8906
4202
8913
9995
7366
8890
7380
1413
1413
9904
4406
4209
4209
4209
4209
4209
4209
9904
4406
9904
4406
7209
9904
4406
9808
2504
4601
ASSY,PWB,CD
MOUNTING,LCD
LCD,DISPLAY
TERMINAL
SPRING,BATTERY
(-)
SOCKET,FPC
13P,PICK
UP
PLuG,2P,sLED/YELLow
PLuG,2P,sPINDLE/wHITE
SOCKET,DC,EXT
POWER
PLuG,2P,LIMIT/RED
JACK,PHONE
D3.6,LINE
OUT
JACK,PHONE
D3.6,PHONES
DIODE
GMAO1
DIODE
1SS133
DOOOE SB1O-O3A
DOODE SB1O-O3A
DOODE SB1O-O3A
DOOOE SB1O-O3A
DOODE SB1O-O3A
DOODE SB1O-O3A
DIODE
GMAO1
DIODE
1SS133
OIODE
GMAO1
DIODE
1SS133
ZENER DIODE
OIODE
GMAO1
OIOOE
1SS133
IC LA9230MS
IC LB81OBM
IC LC78621E
IC
LC5876-1G59
GZA8.2X
PARTS
LIST
EXPLODED
D ME(
Ref. No.
Part
No.
Description
409
409
614
614
645
228
297
271
271
001
9206
76C8
0227
0227
4550
645
645
011
011
8944
8951
645
645
645
011
011
001
8968
6944
4550
645
645
645
645
645
645
001
001
001
001
001
001
455o
4550
5441
5441
5441
5441
::408
Q1409
Q1501
Q1502
Q1701
Q1801
Q1901
Q1902
S1501
S1502
S1503
S1504
S1505
S1506
S1507
S1901
645
645
645
614
645
405
405
405
405
405
405
405
405
405
405
405
405
405
405
405
405
405
405
614
614
614
614
614
614
614
645
001
001
001
212
006
037
036
088
088
088
036
037
106
047
047
089
089
037
037
018
018
003
003
240
240
240
240
240
240
230
008
455o
4550
5441
3171
9864
0809
3702
8502
8601
8403
37o2
0809
2802
9304
9403
1304
1304
0205
0205
95OO
9500
77o2
7702
0944
0944
0944
0944
0944
0944
8578
8728
VR191
X1451
X1501
614
614
614
232
231
215
2000
2667
5561
1C191
IC192
1N101
1N102
L1301
L1401
L1402
L1403
L1404
L1405
L1451
L1501
L1701
L1702
L1801
L1802
L1901
L1902
L1903
Li910
;:401
Q1402
Q1403
or
;;404
Q1405
Q1406
Q1407
Ref. No
Ic NJM21OON
lC LA4805V
SPACE R, PWB, NOTOR
SPACE3, PWB,MOTOR
INOUCTOR,1OU K
INOUCTOR,22U
K
INOUCTOR,27U
K
INOUCTOR,82U
K
INOUCTOR,22U
K
1NDuCTOR,1OU
K
INOUCTOR.1OU
K
INDuCTOF!,1OU
K
1NOUCTOR,2.2U
K
INOUCTOR,2.2U
K
INOUCTOR,2.2U
K
1NOUCTOR,2.2U
K
INOUCTOR,1OU
K
INOUCTOR,1OU
K
INOUCTOR,2.2U
K
INDUCTOR,
FERITE
INOUCTOR,80UH
,1A
TR 2SC4048
TR 2SA1564
TR 2SA1701-T
TR 2SA1701-U
TR 2SA1701-S
TR 2SA1564
TR 2SC4048
TR 2SJ188
TR 2SB1205-S
TR 2S81205-T
TR 2SC4480
TR 2SC4480
TR 2SC3860
TR 2SC3860
TR 2SC3901
TR 2SC3901
TR 2SA1346
TR 2SA1346
SWITCH, TACT, STOP
SW ITCH, TACT, PLAY
SW ITCH, TACT, F FWO
SWITCH, TACT, F BACK
SWITCH, TACT, P.MOOE
SWITCH, TACT, SET
S141TCH, PUSH,0PEN/CLOSE
SWITCH, SLIOE
lP-2T,
8ASSXPANDER
VR, ROTARY, 10 K”A<’ ,VOLUME
RESONATOR,
16.93 MHZ
RESONATOR,
CERAMIC,4.19MHZ
ANISM
{PM.CDI
Part
No.
614
645
411
270
011
152
4752
0689
4301
104
105
106
614
645
614
270
006
271
4875
7983
0494
107
>r
108
614
614
411
27o
271
024
4912
7992
38o7
109
110
111
112
113
645
614
614
614
412
012
270
270
27o
047
5861
4837
4820
4613
3904
114
645
011
0672
ASSY, MOTOR,
SPINOLE
MOTOR WITH
TURNTABLE
MOTOR, CO OC 0.2w,
.
SPINOLE
MOTOR
.
SPECIAL
WASHER, 1.9 X5 X0.3MM
ASSY ,TURNTA8LE
, SPINOLE
273
1734
614
271
0364
645
011
2829
SPECIAL
SPINOLE
COR0,2P
LEAO
FLEX18LE
PICKUP
115
P
N.S.
N.S.
P
P
614
( CD MECHANISM)
Description
101
102
103
N.S.
VIEW
150-SH)
CHASSIS .BASE MECHANISM
ASSY, MOTOR CD, SLEIJ MOTOR
SCR S-TPG
PAN PCS 1.7 X6 MM,
PICKUP
RACK GEAR FIX
GEAR, PICKUP
RACK GEAR
PICKUP,
LASER SF-P1OO
SPECIAL
SCREW- 1.7 X5.5 MN,
SLEO MOTOR FIX
SHAFT, PICKUP
RAIL
SHAFT, PICKUP
RAIL
SCR S-TPG
PAN+FLG
ZX8MM,
PICKUP
RAIL
FIX
SWITCH, LIMIT
SWITCH
GEAR, SLED GEAR
.. .
GEAR, SLEO RETARO GEAR 2
GEAR, SLEO RETARD
GEAR 1
SPECIAL
SCREW,2X8MM.
SLEO GEAR FIX
W–103
113-
FLAT
14
?
SCREW- 1.7 X3.0 MM,
MOTOR FIX
CONNECTOR,
SWITCH
CABLE .13P,
–109’
?1
2
“101
b
b--
-1o-
-11-
I
1
z
()
,.
L<
BLOCK
DIAGRAM
& LCD
CONNECTIONS
DISC
CN191
LINE OUT
PICK-UP
IL
MUTE
‘i%
?
VR191
vOLUME
CONTROL
X1651
16,93 MHz
IC192
HEA:OP;ONE
,
S1501-S1506
1
S1507
OPENN;;;:SE
J
J
-—
m
KEY SWITCH
—_____
OPERATION
CN192
PHONES
_
SWITCH
SI 501
S1502
S1S03
STOP
PLAY
F. FWO
S1504
S1505,
S1506
F. BACK
P. MOOE
SET
F
.
JLO1
EXT.
PICK-UP
LASER
-————
P-LS*
a
m
————
1 PCOMI
-15-
POWER
I
(!
c!
.,-
-.—..-.
-1
ii
WIRING
DIAGRAM
(2)
(BOITOM
VIEW
2/2)
-18-
–19-
I
w
0
1
ii
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3
i
IC BLOCK DIAGRAM
IC151
LC5876-1G59
& DESCRIPTION
( MICRO
PROCESSOR
)
A
NO.
Description
Name
1/0
Description
Name
1/0
1
COM2
o
LCD common
2 outpu!
41
LED C
-
No connection
2
COM 1
0
LCD
1 ouipui
42
BEEP
-
No connection
43
TEST
-
LSI test terminal, normal ground
No.
common
3
CUP1
-
Switching
termmai
4
CUP2
terminal for LCD
44
SEG1
o
Key scan
45
SEG2
o
Key scan output
Iermmai
46
POWER
-
No connection
Data bus for DSP
output
47
A-MUTE
-
No connection
-
Swi[chmg
5
RES
I
Reset terminal
6
EXT-INT
I
EXT-INT
7
SQOUT
I
for LCD drrvmg voltage
driving
voltage
(L+H)
2
-
output
8
COIN
o
Data
bus for DSP
input
48
POWER
o
Ouiput signal for power “ON”
9
CQCK
o
Data
bus for DSP
input
49
XRST
o
Output signal for DSP reset terminal
10
WFfQ
o
Data bus for DSP
input
50
RWC
o
Output signal for DSP read I write command
11
BATT IN
I
Input for batlery mark on LCD
51
LB ON/OFF
-
No connection
12
TEST
I
Input for adjustment
52
LB AIB
-
No connection
13
HOLD
i
Input for key hold (Normally
Input for battery charge mark on LCD
of CD player (Normally
H)
53
H)
BACK
LIMIT
NC
-
No connection
-
No
14
CHARGE
I
15
BRSSA
-
No
connection
55
D-MUTE
-
No connection
16
BRSSB
-
No
connection
56
SLM
o
Select
17
BRSSC
-
No connection
57
SL +
-
Sled motor drive amplifier u +” output
54
connection
terminal
of
sled motor drive
18
SERVICE
-
No connection
58
SL-
-
Sled motor drive ampkfier “-” output
19
XTOUT
-
No connection
59
NC
-
No connection
20
XTIN
-
No connection
60
NC
-
No connection
21
VDD2
-
Power supply for LCD driver
61
NC
-
No connection
22
VDD1
-
Power supply for LCD driver
62
NC
-
No connection
23
Vss
-
Ground
63
NC
-
No connection
24
VDD
-
Power supply
64
NC
-
No connection
-
No connection
No connection
CF-IN
I
Connect
ceramic resonator for 4. I 9 MHz clock
65
NC
26
CF-OUT
o
Connect
ceramic resonator
MHz clock
66
NC
-
27
LIMIT SW
I
67
NC
-
No connection
68
NCl
-
No connection
69
NC
-
No connection
25
28
OPEN I
,
for
4.19
Input for LIMIT switch of laser pick up
Input for lid switch (OPEN / CLOSE)
CLOSE SW
I
Input of voltage monitor of battery
70
NC
-
No connection
30
DRF
-
No connection
71
NC
-
No connection
31
K1
I
Key scan input
72
LCD SEGO
O
LCD segment data
32
K2
I
Key scan input
73
LCD SEG1
o
LCD segment data
33
K3
I
Key scan input
74
LCD SEG2
O
LCD segment data
34
K4
I
Key scan input
75
LCD SEG3
O
LCD segment data
35
NC
-
No connection
76
LCD SEG4
O
LCD segment data
36
NC
-
No connection
77
LCD SEG5
O
LCD segment data
37
A-MUTE
o
Mute signal output
78
LCD SEG6
O
LCD segment data
38
POWER
-
No connection
79
COM4
I o
LCD common 4 output
39
LED A
-
No connection
80
COM3
o
LCD common 3 output
40
LED B
-
No connection
29
SYS.DOWN
-26-
IC BLOCK DIAGRAM
IC191 NJM2100M
& DESCRIPTION
(OP. AMP.)
.&
A
INPUT
-A
INPUT
ICI 92 LA4805V
(HEADPHONE STEREO POWER AMP.)
1
‘“++=
=-z+””’Es”
L.’
1) ’42
LOU
H.P1
S00S1
NF
‘H
L.P2
IN:
OET2
H.P2
PRE
1
1
GNO
25
LOU
BOOST
MIX
OUT1
24
PWFI
OUT1
MIX
OUTZ
23
PwR
GNO
.22
PWR
OUTC
PHR
OUT2
PHR
INl
PuR
INC
PHF4
IN2
:-
VREF
VREp
2i
!
OUT
CONT
20
Vcc
19
Pvss
Sw
18
Pvss
S,c
/(
smO
Ott./’95l435OKM
printed
SANYO
in Japan.
Osaka,
–27-
Electric Co., Ltd.
Japan