Sansui CD-X501i User manual

SANSUI
SERVICE MANUAL
CD-X501*
COMPACT DISC PLAYER
CAUTION
1.Parts identified by the Asymbol on the schematic diagram and the parts list
are critical for safety.
Use only replacement parts that have critical characteristics recommended by
the manufacturer.
2. Make leakage-current or resistance measurements to determine that exposed
parts are acceptably insulated from the supply circuit before returning the appli-
ance to the customer.
•SPECIFICATIONS
Format Compact disc digital audio
Pick-up 3-beam, semiconductor laser
No. of channels 2channels (stereo)
Decoding (D/A) 16-bit linear
Frequency response 4Hz~20 kHz ±0.3 dB
Total harmonic distortion.. Less than 0.003% (1 kHz)
Signal-to-noise ratio (S/M) .Better than 106 dB
Dynamic range Better than 97 dB
Wow and flutter Below measurable limit
Output voltage/load impedance
Normal output (LINE OUT)
2V/10 kohms
Digital output (DIGITAL OUT)
0.5 ±0.1 Vp-p/75 ohms
Headphones 45 mW (variable maximum)/
with 32-ohms load
Power requirements AC 120V/220V/240V,
50/60 Hz
For U.S.A. &Canada .. AC 120V, 60 Hz
Power consumption 16 watts
Dimensions 448 mm (17-11/16") W
98 mm (3-7/8") H
317 mm (12-1/2") D
Weight 5.4 kg (11.9 lbs) net
Remote controller: RS-1020
Control system Infra-red ray pulse system
Power requirements DC 3V
Dimensions...! 63 mm (2-1/2") W
18 mm (3/4") H
148 mm (5-7/8") D
Weight 115 g(0.3 lbs)
including dry batteries
*Design and specifications subject to changes without notice for im-
provements.
*Due to local laws and regulations, this unit sold in some areas are not
equipped with variable voltage selectors.

CD-X501/
NOTE
1
.
The symbols, UL, CSA, SA, BS, UK, EU, AS, SEV, SS and
XX <EXPORT>on the parts list and the schematic dia-
gram mean followings respectively.
UL Manufactured for U.S.A market.
(Underwriters Laboratories approved
model.)
CSA Manufactured for Canadian market.
SA Manufactured for South African market.
BS, UK Manufactured for United Kingdom
market.
EU Manufactured for European market.
AS Manufactured for Australian market.
SEV Manufactured for Swiss market.
SS Manufactured for Saudi Arabia market.
XX Standard Version.
<EXPORT>
NON MARK Common Parts.
2. Some printed circuit boards are not supplied assembled.
To separate these in this service manual, the stock num-
bers are not indicated for these boards. However, stock
numbers for individual parts are indicated.
3. Since some capacitors and resistors are omitted from parts
lists in this service manual, refer to the Common Parts List
for capacitors and resistors, which was issued on June
1987.
4. Abbreviations in this service manual are as follows.
I—•Abbreviations List i
C.R. :Carbon Resistor
S.R. :Solid Resistor
Ce.R. :Cement Resistor
M.R. :Metal Film Resistor
F.R. Fusing Resistor
N.I.R. Non-Inflammable Resistor
A.R. Array Resistor
C.C. Ceramic Capacitor
C.T. Ceramic Capacitor, Temperature
Compensation
E.C. Electrolytic Capacitor
E.L. Low Leak Electrolytic Capacitor
E.B. Bi-Polar Electrolytic Capacitor
E.B.L. :Low Leak Bi-Polar Electrolytic
Capacitor
Ta.C. Tantalum Capacitor
F.C. Film Capacitor
M.P. Metalized Paper Capacitor
P.C. Polystyrene Capacitor
M.M.C. Metalized Mylar Capacitor
A.C. Array Capacitor
V.R. Variable Resistor
S.V.R. Semi Variable Resistor
SW. Switch
Chip R. Chip Resistor
Chip C. Chip Capacitor
Cautions Concerning Handling of The Laser
The following lable has been alfixed to the unit, listing the proper procedure for
working with the laser beam. (UL and XX model only)

1.BLOCK DIAGRAM
2

CD-X501/
2. INTERIOR BLOCK DIAGRAM AND TERMINAL FUNCTION OF 1C
•CXA1081S (RF Amp.)
Pin No. Pin Name I/O Description
1RFI 1RF summing amplifier input.
2RFO 0RF summing amplifier input.
3RF ©1RF Summing amplifier feedback signal
input.
4P/N 1Terminal for switching P-sub/N-sub of
LD (laser diode).
5LD 0APC LD amplifier output.
6PD 1APC PD amplifier input.
7PD1 1RF l-V amplifier (1) inverting input.
This terminal is connected to the pin di-
ode (A +C).
8PD 21RF l-V amplifier (2) inverting input.
This terminal is connected to the pin di-
ode (B +D).
9VC —Ground
10 F1Fl-V amplifier inverting input.
This terminal is connected to the pin di-
ode (F).
11 E1El-V amplifier inverting input.
This terminal is connected to the pin di-
ode (E).
12 EO 0El-V amplifier output.
13 El 1El-V amplifier feedback input.
14 VR 0(Vcc +Vee)/2 voltage output.
Pin No. Pin Name I/O Description
15 CC2 1Defect amplifier bottom hold input.
This terminal is connected Pin 16with
acoupling capacitor.
16 CC1 0Defect amplifier bottom hold output.
17 Vee -Negative supply voltage: —5V.
18 FEBIAS 1Bias terminal for the focus error ampli-
fier non-inverting.
19 FE 0Focus error amplifier output.
20 TE 0Tracking error amplifier output.
21 DEFECT 0Defect comparator output.
22 MIRR 0Mirror comparator output.
23 CP 1Mirror comparator non-inverting input.
This terminal is connected amirror hold
capacitor.
24 CB 1IThis terminal is connected adefect bot-
tom hold capacitor.
25 DGND -Ground.
26 ASY 1Auto asymmetry buffer control signal
input.
27 EFM 0EFM comparator output.
28 FOK 0FOK comparator output.
29 LD ON 1Laser diode ON/OFF switching input.
30 Vcc -Positive supply voltage: +5V.

CD-X501/
•CXA1 082AS (Servo Control)
Terminal Function <CXA1082AS>
Pin No. DEI
8FGD 1Acapacitor is connected between this
Pin and F3 (Pin 9) for decreasing high-
frequency gain of focus servo.
9FS3 0Terminal for switching high-frequency
gain of focus servo. j
10 FLB This Pin is used to connect atime cons-
tant for increasing low-frequency
characteristic of focus servo.
11 FEO 0Terminal for outputting asignal for driv-
ing focus coil.
17 TAO 0Terminal for outputting asignal for driv-
ing tracking coil.
20 SLD 0Terminal for outputting adrive signal for
sled motor.
45 SPDLO 0Terminal for outputting adrive signal for
spindle (disc) motor.
12 FE 01Focus amplifier inverting input.
13 SRCH 1This terminal is used to determine time
constant for genarating focus search
wavefoam.
14,
15 TGU
TG2 Terminals are used to determine atime
constant for switching tracking high-
frequency gain.
18 TA 01Tracking amplifier inverting input.
19 SL 01Sled (Feed) amplifier non-inverting input.
21 SL0 1Sled amplifier inverting input.
22 SSTOP 1Terminal for inputting asignal from limit
switch ON/OFF for detecting innermost
track of disc.
23 FSET 1Terminal for setting focus and tracking
phase-compensation peaks and fo of
CLV LPF.
24 SENS 0Terminal for outputting internal condi-
tion data.
26 C.OUT 0Terminal for outputting asignal for
counting track number of disc.
27 DIRC —This terminal is used for one-track jump
operation.
28 XRST —Terminal for inputting areset signal.
Reset operation in "L" level.
29 DATA iSerial data input from the CXP5034H
mechanism control.
Pin No. Pin Name I/O Description
30 XLT 1Terminal for inputting alatch signal
for serial data from the CXP5034H
mechanism control.
31 CLK 1Serial data clock input the CXP5034H
mechanism control.
32 DGND —Ground.
34 PD! 1PDO signal input from the phase-
comparator of the CXD1 125Q digital
signal processing.
35 ISET 0Terminal for outputting acurrent to de-
termine focus search, track jump and
sleding kick height.
36 VCOF 1VCO free-frequency is practically pro-
portional to resistance between this Pin
and Pin 37.
38 C864 0Internal 8.64 MHz VCO output.
40 MDP 1Aspindle motor driving sign*! input from
the CXD1 125 digital signalprocessing
(MDP terminal).
41 MON 1Aspindle motor ON/OFF signal input
from the CXD1125 digital signal pro-
cessing (MON terminal).
42 FSW This terminal is used to deteinn ine atime
constant for LPF of CLV servo error
signal.
44 SPDL ©1Spindle drive amplifier inverting input.
46 WDCK 1Auto sequence clock input
Typical frequency =88.2 kHz.
47 FOK 1!FOK signal input from the OC A1081 S.
48 MIRR 1Mirror comparator signal infirt from the
CXA1081S.
2DFCT 1Defect comparator signal inpu-t from the
CXA1081 S.
3TE 1Tracking error amplifier sign* input from
CXA1081S.
4TZC 1Tracking zero cross compaia^or signal
input.
5ATSC 1Window compartor input fo ^ATSC de-
tection.
6FE 1Focus error amplifier signalir^put.
3

;D-X501/
•PCM56 (16 bit D/A Converter) Terminal Function <PCM56>
1No. Pin Name I/O Description
1—Vcc —Negative supply voltage: —5V.
2DIG GND —Digital ground.
3+VL —Positive supply voltage: +5V.
5CK 1Input data clock. The rising edge of this
clock defines input data volid.
6LEC 1Latch enable control input.
7DATA 1Data input.
Each data is in two's complement for-
mat with the most-significant bit first.
8-VL —Negative supply voltage for logic circuit.
9Vout 0Analogue output.
10 RF —This terminal is used to connect aresis-
tor for feedback.
11 S«J !Summing Junction (Operatinal amplifi-
er input).
12 AGNA —Analogue ground.
13 1OUT 0Current output.
14 MSB ADJ. —This terminal is used for adjusting MSB.
15 VPOT —This terminal is used to connect apoten-
tiometer for MSB.
16 +Vcc —Positive supply voltage.
4

CD-X501/
Terminal Function <CXD1125Q>
Pin
No.
Pin
Name I/O Description
1FSW 0Terminal to output atime constant switching
signal for output-filter of spindle motor.
2MON 0Terminal to output acontrol signal for spindle
motor ON/OFF.
3MDP 0Spindle motor drive output. For CLV-S mode
rough control and CLV-P mode phase control.
4MDS 0Spindle motor drive output. For CLV-P mode
speed control.
5EFM 1Terminal to input aEFM signal from RF amplifi-
er (CXA1081S).
ASY 0Terminal to output acontrol signal for EFM sig-
nal slice level.
HLOCK 0The GFS signal is sampled at WFCK/1 6: if "H",
"H" is output through this terminal. If "L" for
8consecutive times, "L" is output.
8VCOO 0VCO output. When locked to the EFM signal,
f=8.6436 MHz.
9VCOI 1VCO input.
ina n(OV).
\m VST —Ground (0 V)
13 CLK 1Terminal to input atransfer clock for serial data
from the CXP5034H.
Serial data is latched on the rasing edge of the
transfer clock.
14 XLT 1Terminal to input alatch signal from the
CXP5034H.
Latches adata (serial data from the CXP5034H)
of 8-bit shift register to each register.
15 DATA 1Serial data input from the CXP5034H.
16 XRST 1System reset input. Reset is performed at "L”
input.
17 CNIN 1Tracking pulse input.
18 SENS 0Outputs internal condition data for each
address.
19 MUTG IMuting input. When the internal register ATTM
is "L", MUTG sets the normal condition at "L”
input, and the muted condition at "H" input.
23 SUBQ 0Subcording Qdata output.
24 SCOP 0Subcording data sync S0 +S1 output.
25 SQCK I/O Subcording Qdata readout clock input/output.
27 DOTX 1Digital data output.
28 GFS 0Frame sync locked condition indicating output.
29 DB08 I/O External RAM data terminal. DATAs (MSB)
30 DB07 I/O External RAM data terminal. DATA7
31 DBoe I/O External RAM data terminal. DATA6
32 DBos I/O External RAM data terminal. DATA5
33 Vdd —Positive supply voltage.
34 DB04 I/O External RAM data terminal. DATA4
35 DB03 I/O External RAM data terminal. DATA3
36 DB02 I/O External RAM data terminal. DATA2
37 DBoi I/O External RAM data terminal. DATAi (LSB)
38 RAoi I/O External RAM address output. ADDRoi (LSB)
39 RA02 I/O External RAM address output. ADDR02
40 RA03 I/O External RAM address output. ADDR03
41 RA04 I/O External RAM address output. ADDR04
42 RA05 I/O External RAM address output. ADDR05
43 RA06 I/O External RAM address output. ADDRoe
44 RA07 I/O External RAM address output. ADDR07
45 RA08 I/O External RAM address output. ADDRos
Pin
No.
Pin
Name I/O Description
46 RA09 mExternal RAM address output. ADDR09
ESI 1mExternal RAM address output. ADDR10
m\ RA11 El External RAM address output. ADDR11
49 RAWE 0Write enable signal output to the external RAM
(active at "L").
HChip select signal output to the external RAM
(active at "L").
C4M aX'tal division output. f=4.2336 MHz.
mVss —Ground (OV).
53 XTAI 1X'tal oscillator circuit input, f=8.4672 MHz or
16.9344 MHz, depending on the selected mode.
54 XTAO HX'tal oscillator circuit input, f=8.4-672 MHz or
16.9344 MHz, depending on the selected mode.
55 MDl uMode selection input 1
.
EE1 nMode selection input 2.
mMD3 nMode selection input 3.
58 SLOB 1Terminal to input aswitching signal for audio
data output cord.
Serial data output at "H". Parallel data output
at "L".
1Audio data output mode switching input serial
output at "L", and parallel output at "H".
62 DA01 0Outputs DA01 (parallel audio data, LSB) when
PSSL ="H", and C1F1’1when PSSL ="L".
63 DA02 0Outputs DA02 when PSSL="H'\ and C1F2* 1
when PSSL ="L".
70 DA09 0Outputs DA09 when PSSL="H"(and PLCK* 2
when PSSL="L".
71 DAlO 0Outputs DA10 when PSSL ="H",and UGFS *3
when PSSL="L".
72 DAll 0Outputs DA11 when PSSL= "H",and GTOP *4
when PSSL ="L'\
73 Vdd —Positive supply voltage: +5V.
74 DA12 0Outputs DA12 when PSSL= "H", and RAOV *5
when PSSL ="L".
75 DA13 0Outputs DA13 when PSSL ="H", and C4LR *6
when PSSL ="L'\
76 DA14 0Outputs DAi4 when PSSL ="H", and C21 O*7
when PSSL ="L".
77 DA15 0Outputs DA15 when PSSL ="H", and C21 O*8
when PSSL ="L".
78 DAie 0Outputs DA16 (parallel audio datalVISB: when
PSSL ="H", and DATA'9when PSSL ="L".
79 WDCK 0Strobe signal output. 176.4 kHz alD FON, 88.2
kHz at DF OFF.
80 LRCK 0Strobe signal output. 88.2 kHz aDF ON, and
44.1 kHz at DF OFF.
NOTES: 1. Cl FI
:
C1F2:
2. PLCK:
3. UGFS:
4. GTOP:
5. RAOV:
6. C4LR:
7. C21 0:
8. C210:
9. DATA:
Cl decoding error correction condition
data monitoring output.
VCO/2 output, f=4.321 8MHz when
locked to the FFM signal.
Unprotected frame sync patten output.
Frame synchronization protected condition
indication output.
±4-frame jitter absorbing RAM over-
flow/under flow indicating output.
Strobe signal. 352,8 kHz at &F ON,
176.4 kHz at DF OFF.
C210 inverting output.
Bit clock output 4.2336 MHzat: OF ON,
2.1168 MHz at DF OFF.
Audio signal serial data output.
5

•SM5807 (Digital Filter)
53pi §
vss
Terminal Function <SM5807>
Pin No. Pin Name I/O Description
tXT 1Clock input from crystal circuit.
2XT 0Clock output.
3CKSL 116.9344 (or 17.2872) MHz/
8.4672 (or 8.6436) MHz select signal
input.
When CKSL is HIGH:
Clock (16.9344 or 17.2872 MHz)
is inputted to Xt Terminal.
When CKSL is LOW:
Clock (8.4672 or 8.6436 MHz)
is inputted to Xt Terminal.
4CKO 0Clock output.
5LRCI IClock (44.1 kHz) input.
6DIN 1!Serial data input.
Serial data is valid on the rising edge of
the serial bit clock (BCLK).
7BCKI iSerial bit clock input.
8Vss —Ground
9SCSL 1SCSL ="H": System clock =192fs
SCSL= "L": System clock =196fs
(fs =Sampling frequency)
10 DGR 0Right channel deglitch signal
(1 76.4 kHz) output.
11 DGL 0Left channel deglitch signal (176.4 kHz)
output.
12 DOUT 0Serial data output.
Left and right channel serial data is out-
putted alternately.
The serial data is valid on the rasing edge
of the output bit clock (BCKO).
13 WDCO 0Output data control (352.8 kHz) output.
14 LRCO 0Output data control clock (176.4 kHz)
output.
15 BCKO 0Serial bit clock output. Typical
frequency =8.4672 or 8.6436 kHz.
BCKO =8.4672 kHz:
SCSL is HIGH or Open
....System clock =192fs
BCKO =8.6436 kHz:
SCSL is LOW
....System clock=196fs
16 Vdd -Positive supply voltage: +5V.
•TC5517AP/MSM5128/CXK5816/VPD446C
(2048 Word x8bit Static RAM)
Action Mode
cs OE WE CHIP OUTPUT MODE CURRENT
HXXNon
Select High Impedance
Ices
LHH
IcCALLHRead Dout
LXLWrite Din
H: High Level
L: Low Level
X: High or Low Level
Ao-Aio: Address Input
l/O i~I/Os: Data Input
CS: Chip Select Input
WE:Write Enable Input
OE: Output Enable Input
Vcc: +5V Power Supply
GND: Ground
•LB1461 (Motor Drive)
PI OUT1 Vcc2 0UT2 P2 Vcel
6

CD-X501/ CD-X501/
•M50747 (System Control)
Terminal Function
Pin No. Pin Name I/O Description
1Vcc -Positive supply voltage: +5V.
3CE 0Terminal to output achip enable signal
for serial data to the CXP5014.
4PKO 0Terminal to output afeed-kick signal in
POWER ON mode.
10 STB1 1Terminal to input atiming signal for
parallel data from the CXP5014.
11 SSTB 0Terminal to output atiming signal for
serial data to the CXP5034.
13 ACK2 0Terminal to output aresponse signal for
paralledl dat to the CXP5034.
14-17 IDAT3-
IDATO
1Terminal to input akey switch and remoto
controller data from the CXP5014.
19 CLK 0Terminal to output aclock for serial data
to the CXP5014.
20 SDATA 0Serial data output to the CXP5014.
26 QINT 1Terminal to input ainterrupting signal
from the CXP5034.
27 CNVss -OV
28 RESET 1Terminal for inputting areset signal.
29 EXTAL 1System clock input:
Typical frequency =4.2336 MHz.
32 Vss -Ground
33 SACK 1Terminal to input aresponse signal for
serial data from the CXP5014.
34 TEST1 1Test input; not used in normal
operation.
35 TEST2 1Test input; not used in normal
operation.
40 SHE 1Terminal to input a signal for high-speed
access mode from the CXP5034H.
41 MACK 1Terminal to input aresponse signal for
paralled data from the CXP5034H.
42 MSTB 1Terminal to input astrobe signal for
parallel data from the CXP5034H.
43 SREQ 0Terminal to output atiming signal for
parallel data to the CXP5034H.
44 SACK 0Terminal to output aresponse signal for
parallel data to the CXP5034H.
45-48 D3-D0 I/O Data bus lines from/to the CXP5034H.
59 TIMER1 1This terminal is used for inputting asig-
nal for TIMER operation.
62 SSTOP 1Terminal for inputting asignal from lead-
in switch.
63 TRAY-IN 1Terminal for inputting a signal from
loading-in switch.
64 TRAY-OUT 1Terminal for inputting asignal from
loading-out switch.
•CXP5034H (Mechanism Control)
Terminal Function
Pin No Pin Name I/O Description
1SQCK 1Terminal to input aclock for subcord-
ing Q-channel signal for the CXD1 125.
4SUBQ 0Subcording Q-channel signal input from
the CXD1 125.
5TRAY OU1riDisc tray out (loading out) switch input.
6TRAY IN iDisc tray in (loading in) switch input.
7SSTOP iLead-in switch signal input.
8CHANGER iTerminal for selecting single and
changer. This terminal is fixed at "L"!
level usually.
9-12 D0-D3 I/O Data bus lines from/to the MSM50747.
13 SACK iTerminal to input areseponse signal for
parallel data from the MSM50747.
14 SREQ iTerminal to input atiming signal for
parallel data from the M50747.
15 QINT 0Terminal to output ainterrupting signal
to the M50747.
16 MSTB 0Terminal to output atiming signal for
parallel data to the M50747.
17 MACK 0Terminal to output areseponse signal for
paralledl data to the MSM50747.
18 SHE 0Terminal to output asignal for high-
speed access mode to the MSM50747.
High-speed access mode is set at "H"
level.
20 TCTC 1Terminal to input acount signal for track
number of disc.
21 Vss -Ground.
22 FOK 1Terminal to input asignal for focus ser-
vo OK.
Focus servo OK mode in "H" level.
23 GFS 1Terminal to input asignal for frame sync
locked condition from the CXD1125.
24 SENS 1Terminal to input acondition signal from
the CXA1082 and CXD1125.
26 MUTG 0Terminal to output amuting signal. In
muting, this terminal becomes an "H"
level.
27 DATA 0Terminal to output aserial data to the
CXA1082 and CXD1125.
28 XLT 0Terminal to output alatch signal for seri-
al data to the CXA1 082 and CXD1 125.
29 CLK 0Terminal to output aclock for serial data
to the CXA1082 and CXD1125.
30 LDON 0Terminal to output asignal for the laser
diode ON.
31 XRST 0Terminal to output areset signal to the
CXA1082 and CXD1125.
32 DE 0Terminal to output adriving signal for
deemphasis circuit. Active "H".
35 EXTAL 1System clock input, typical frequency =
4.2336 MHz.
36 RESET 1Terminal for inputting areset signal.
37 SCOR 1Terminal to input asubcording sync
S0 +S1 from the CXD1 125.
38,
39 TRAY +
TRAY- 0Terminal to output asignal for loading
motor drive.
42 Vdd -Positive supply voltage: +5V.
•CXP5014 (Display Control)
Terminal Function
Pin No. Pin Name I/O Description
3RMC 1Remoto controller signal input.
4CLK 1Serial data clock input from the
M50747.
7SDATA 1Serial data input from the M50747.
8SACK2 0Terminal to output aresponse signal
for receiving serial data to the
M50747.
12-15 PC0-PC3 0Terminals for outputting akey return
signal to externally connected key
matrix.
16-19
•
20-23
PE0-PE3
•
RMD0-RMD3
1Terminals for inputting akey return
signal from externally connected key
matrix.
28 SSTB 1Terminal to input atiming signal for
receiving serial data from the
M50747.
29 CE 1Terminal to input achip enable signal
for receiving serial data from the
M50747.
3. DESCRIPTION OF FV170G
Pin No. Pin Name I/O Description
30 STB1 0Terminal to output atiming signal for
parallel data from the M50747.
31 ACK2 1Terminal to input aresponse signal for
parallel data from the M50747.
32 Vss -Ground
33-48 a-p 0Terminals for Outputting segment sig-
nals to FL display.
50-56 7G-1G 0Terminals for outputting grid signals
to FL display.
57 Vfdp —Terminal for connecting asupply vol-
tage to filament of FL display.
59 QINT 1Terminal to input achip enable signal
for serial data from the M50747.
61 EXTAL 1System clock input, typical frequency
=4.2336 MHz.
62 RESET 1Terminal for inputting areset signal.
64 Vdd -Positive supply voltage: +5V.
FL DISPLAY
•Grid Configuration
•Anode Configuration
7G 6G 5G 4G 3G 2G IG
a1DISC 1la la la la i4
bPROGRAM 1b 1b 1b 1b 25
c1c 1c 1c 1c 69
dId Id Id Id 8h00
e1e 1e 1e 1e 710
fINDEX If If If If 3>
9-ig ig ig ig _
h--TRACK MS_
iLAP 2a 2a 2a 2a 11 14
iRAMAIN 2b 2b 2b 2b 12 15
k-2c 2c 2c 2c 16 19
1-2d 2d 2d 2d 18 r#USIC SACN 1
m—2e 2e 2e 2e 17 20
nTOTAL 21 2f 2f 21 13 rOVER 1
01REPEAT 12g 2g 2g 2g _
P—1ALL A- B1SPACING 11PROGRAM 1
•Pin Configuration
PIN NO. D0BEEIDEEEEEEEEE22313323EEEEEEEE EEEE322EE23
CONNECTION BB0SBBBbBBflfl0BBBB0BBBB000000000100001a01BB
7

CD-X501/
4. ADJUSTMENTS
Note: 1) Required test disc CD-I of EIAJ.
2) Test pins and adjustment parts are shown in Figs. 4-1 and 4-2.
8
CD-X501/
5. EXPLODED VIEW OF MECHANISM ASS'Y AND PARTS LIST
Parts List <CD Mechanism Ass'y >
Parts No. Stock No. Description Parts No. Stock No. Description
118178700 Clamp Arm Ass'y 25 -27379410 Spacer
1-1 27365600 Clamp Cover 26 27365000 Sled Gear B
1-2 27365700 Clamp Plate .27 48574400 Loading IN Detector Switch
1-3 27365800 Clamp Arm 28 48794000 Sled IN Detector Switch
1-4 27365410 Thrust Plate 29 48829000 Loading OUT Detector Switch
1-5 27279100 Steel Ball 30 18159300 Sled Motor Ass'y (with Worm
1-6 27423200 Cushion Sheet Gear)
218176101 Disc Tray Ass'y 31 27366600 Motor Band
2-1 27538100 Disc Tray 32 48584900 Spindle Motor
2-2 27423400 Right Lifter Ass'y 33 27593500 Clamp Arm Spring
2-3 27423300 Left Lifter Ass'y 34 27463700 Arm Stopper
2-4 27364800 Lifter Spring 35 47420900 Lock Pin
327553900 Disc Tray Panel
927279100 Steel Ball SI 46319800 M3x8 Bind Head Deltite Screw
10 48830500 Pick-up Ass'y S2 46268000 M3x8 Franged Head Deltite Screw
11 27363800 Support Rail S3 13122300 M3x6 Bind Head Machine Screw
12 27364500 Spring Damper S4 18158700 M3x8 Bind Head Screw
13 27367000 Cam Gear S5 46609800 M2x3 Bind Head Machine Screw
14 27364000 Drive Gear S6 49198900 M2. 6x6 Washer Head tapping
15 27365200 Loading Gear Screw
16 27422600 Loading Pulley S7 00421300 M2. 6x6 Bind Head Screw
17 27422700 Belt S8 13301100 M2x8 Bind Head Tapping Screw
18 27364700 Switch Arm S9 51625200 M3x10 Washer Head Tapping
19 27537600 Turn Table Ass'y Screw
20 27462120 CD Holder S10 18154800 M2x4 Pan Head Machine Screw
21 27364910 Sled Gear A
22 27364400 Floating Rubber W3 27364300 2.50 Slit Washer
23 18159100 Loading Motor Ass'y (with Pulley) W4 27364600 6.60 Thrust Washer
24 27365500 Plate Spring W5 27537500 Slicon Washer

CD-X501/
6. PARTS LOCATION ON BOARD
6-1. F-5932 FL Display Tube Board 6-2. F-5933 Operation Switch Board
Component Side Component Side
lO

CD-X501 /CD-X501/
6-3. F-5931 Main Board
Component Side 6-4. F-5934 PHONES Jack Board
Component Side
T•V-w
6-5. F-5935 DIGITAL OUT Terminal Board
Component Side POWER AMP.00
6-6. F-5936 OPEN/CLOSE Switch Board
Component Side
6-7. F-5937 Line Filter Board
Component Side
FIXED
5937tcMK*54XfdW
LOGIC CONTROL(w)
11

CD-X501/ CD-X501/
6-8. F-5938 LINE OUT Terminal Board
Component Side
6-9. F-5939 Digital Signal Processing Board
Component Side
7. PARTS LIST OF BOARD
<F-5931 >
Parts No. Stock No. Description
mDZ5 03168300 RD4.7F
mR6 46624700 220Q 2W N.I.R.
mC7 48086000 O.OIjiF 50V F.C.
mC9 48086000 O.OIjiF 50V F.C.
mCl 1,12 49265600 3300j*F 16V E.C.
mC13. 14 48832000 470^F 16V E.C.
mCl 5, 16 48748400 0.1#iF 50V C.C.
mCl 748747200 0.0 VF 50V F.C.
mCl 849266000 470/iF 50V E.C.
•Transistor
vQI ,246604301 2SC3327
vQ3 46719900 DTC124ES
vQ4 46719800 DTA124ES
•1C
vIC 148984900 SM5807BP
or 48984910 SM5807EP
vlC2 48319700 TC74HC02P
or 49265100 TC74HC02AP
vlC3 48666800 PCM56P
vlC4 48730400 M5238L
7-1.F-5931 Main Board <stock No. 0i09860i>
Parts No. Stock No. Description
•Transistor
fQ 146359701 2SA952
fQ2, 346367101 2SC2603
or 48058801 2SC1740S
fQ4 46359801 2SC2001
fQ5 46359701 2SA952
fQ6 48916900 DTC114YF
fQ8 46719800 DTA124ES
fQ9 46719900 DTC124ES
fQ10 46359801 2SC2001
ton 46359701 2SA952
fQI 246359801 2SC2001
fQI 346359701 2SA952
fQI 446359801 2SC2001
fQI 546359701 2SA952
•1C
fICI 48839900 CXA1081
S
flC2 48840000 CXA1082AS
•Diode
fD
1
46464100 1SS133
fR25 48438400 3.3kfl 1/5W M.R.
fR30, 31 48442000 lOOkfl 1/5W M.R.
fC6 48087200 0.033fiF 50V F.C.
fC8, 948086000 0.01 ^tF 50V F.C.
fC14, 15 48832000 470(tF 16V E.C.
fCI 7, 18 49201400 4700pF 50V F.C.
fC 1
9
48087600 0.047/iF 50V F.C.
fC20 48088400 0. 1/iF 50V F.C.
fC23 48088400 O.lpF 50V F.C.
fC24 48748400 0.1/aF 50V C.C.
fC25 48103000 0.22fiF 50V E.B.
fC27 48086000 0.01/iF 50V F.C.
fC28 48087200 0.033/tF 50V F.C.
fC29 4874840
0
0.1/iF 50V C.C.
fC31 48087200 0.033(»F 50V F.C.
fC35 49201400 4700pF 50V F.C.
fC37 48748400 0. 1/aF 50V C.C.
fC50 48748400 0. 1/iF 50V C.C.
fCIOI 48748400 0.1/iF 50V C.C.
fLI 48289400 10/*H Inductor
Parts No. Stock No. Description
fVRI 46634500 22kfl S.V.R., Tracking Offset adj.
fVR2 46634300 10kQ S.V.R., Focus Offset adj.
fVR3 46634500 22kfl S.V.R., Tracking Gain adj.
fVR4 46634500 22kfi S.V.R., Focus Gain adj.
fVR5 48118800 2kfi S.V.R., VCO adj.
•1C
kIC 148577000 M5216L
kCI 48102000 '[OfiF 16V E.B.
•Transistor
AmQI 48150101 2SD1406
Aor 48508801 2SC3851
AmQ2 48150801 2SB1015
Aor 48509101 2SA1488
AmQ3 46614001 2SA1283
mQ4 46367001 2SA1115
or 48058601 2SA933S
•FET
mFTI ,246643502 2SK163-L1
or 46643503 2SK163-L2
•1C
AmICI 49232100 M5F78M05L
AmlC2 49233200 M5F79M05L
•Diode
AmDI 07112300 10DF2
AmD2 07112300 10DF2
AmD3 07112300 10DF2
AmD4 07112300 10DF2
AmD5 07112300 10DF2
AmD6 07112300 10DF2
AmD7 07112300 10DF2
AmD8 07112300 10DF2
AmD9 46273600 DBB10B
mD10, 11 46464100 1SS133
•Zener Diode
mDZI ,246112900 05Z9.1-X
or 46113000 05Z9.1-Y
mDZ3 46116200 05Z27-X
mDZ4 46112300 05Z7.5-X
or 46112400 05Z7.5-Y
vCI ,248748400 0.VF 50V C.C.
vC5 49200600 2200pF 50V F.C.
vC6 49200000 1200pF 50V F.C.
vC7 49200400 1800pF 50V F.C.
vC8 48086400 0.01 5/*F 50V F.C.
vC9 49247500 270pF 50V F.C.
vCI 248086000 O.OIjiF 50V F.C.
vC13~ 16 48748400 0.1 mF50V C.C.
vVRI 46634900 lOOkQ S.V.R., Distortion adj
Transistor
wQI 46367101 2SC2603
or 48058801 2SC1740S
1C
wICI 49260900 CXP5034H-062S
wlC2 49250400 M50747-656SP
wlC3 48982600 LB1641
Zener Diode
wDZI 46112700 05Z8.2-Y
or 46112800 05Z8.2-Z
wR9 48774800 100kGX8 A.R.
wC2, 348748400 0. IjiF 50V C.C.
7-2. F-5932 FL Display Tube Board
<Stock No. 01098701 >
Parts No. Stock No. Description
•Transistor
nQI, 248916900 DTC114YF
•1C
nICI 49235600 CXP5014-247S
nFLI 48903700 VF170G FL. Display Tube
nRI 46341900 10kGX4 1/8W A.R.
nR2 ~4 46350500 100kfiX8 1/8W A.R.
nC2~5 48748400 0.VF 50V C.C.
7-3. F-5933 Operation Switch Board
Parts No. Stock No. Description
oSI 49250300 Push SW., PLAY
oS2 49250300 Push SW., PAUSE
oS3 49250300 Push SW., RANDOM
oS4 49250300 Push SW., STOP
oS5 49250300 Push SW., 0
oS6 49250300 Push SW., 3
oS7 49250300 Push SW., 2
oS8 49250300 Push 'SW., 1
oS9 49250300 Push SW., |<w
oSIO 49250300 Push SW., >£H
oS1
1
49250300 Push SW., SET
oSI 249250300 Push SW., 6
oS13 49250300 Push SW., 5
oS14 49250300 Push SW., 4
oSI 549250300 Push SW., «
oS16 49250300 Push SW., »
oSI 749250300 Push SW., CL
oS18 49250300 Push SW., 9
oS19 49250300 Push SW., 8
oS20 49250300 Push SW., 7
oS21 49250300 Push SW., SPACING
oS22 49250300 Push SW., MUSIC SCAN
oS23 49250300 Push SW., CHECK
oS24 49250300 Push SW., TIME
oS25 49250300 Push SW., A-B
oS26 49250300 Push SW., 1/ALL
wlC4 48525000 Remote Control Receiver BX1407
7-4. F-5934 PHONES Jack Board
Parts No. Stock No. Description
kVRI 49197300 50kfi (A) V.R., PHONES LEVEL
oJ3 49197600 Jack, PHONES
7-5. F-5935 DIGITAL OUT Terminal Board
Parts No. Stock No. Description
fT 149197000 Pulse Transformer
oJ2 49197500 IP Pin Terminal, DIGITAL OUT
12

CD-X501/ CD-X501/
7-6. F-5936 OPEN/CLOSE Switch Board
Parts No. Stock No. Description
oS27 48306900 Push SW., OPEN/CLOSE
7-7. F-5937 Line Filter Board
Parts No. Stock No. Description
ApCl
ApC2
ApC3
46943200
46426500
46943200
0.01/aF 400V C.C.
3300pF 400V C.C.
0.01/tF 400V C.C.
ApLI 49197100 Line Filter
7-8. F-5938 LINE OUT Terminal Board
Parts No. Stock No. Description
oJI 48792100 2P Pin Jack, LINE OUT
7-9. F-5939 Digital Signal Processing Board
<Stock No. 01099401 >
Parts No. Stock No. Description
•1C
flC3 48976700 CXD1 125Q-Z
flC4 48718000 TC5517AP-2
or 48718100 fiP D446C-2
or 48718300 MSM51 28-1 5RS
or 48839700 CXK581 6PN-12L
or 49260400 CXK581 6PN-1 5L
or 49260500 CXK581 6PS-12L
or 49260600 CXK581 6PS-1 5L
flC5 48423400 TC74HC04P
or 48723600 /iPD74HC04C
or 49265200 TC74HC04AP
flC7 48423500 TC74HC08P
or 48723700 /iPD74HC08C
or 49265300 TC74HC08AP
fXOI 48592500 16.9344MHz Quartz Element
fC38 48748400 O.lfiF 50V C.C.
fC40 48748400 0.1/iF 50V C.C.
fC44~47 48748400 0.1/iF 50V C.C.
fC102 48748400 O.IjiF 50V C.C.
8. OTHER PARTS
Parts List <Front View>
Parts No. Stock No. Description Parts No. Stock No. Description
127555900 Front Panel Ass'y 1-23 27548500 TIMER-Knob
1-1 27591700 OPEN/CLOSE* Knob 1-24 27548600 CHECK-Knob
1-2 27419300 1-Knob 1-25 27548700 SPACING-Knob
1-3 27419400 2-Knob 1-26 27548300 1/ALL-Knob
1-4 27419500 3-Knob 1-27 27548400 A-B-Knob
1-5 27419600 4-Knob 227290910 BO Holder
1-6 27419700 5-Knob 327389300 Bonnet
1-7 27419800 6-Knob 448306900 Push SW., OPEN/CLOSE
1-8 27419900 7-Knob 548903700 VF170G FL Display
1-9 27420000 8-Knob 649250300 Push SW., Operation
1-10 27420100 9-Knob 727293110 Dress Side Panel Right
1-11 27420200 0-Knob 847639310 Knob, LEVEL (Phones)
1-12 27549200 SET-Knob 949197300 50kQ (A) V.R., Phones Level
1-13 27549300 CL-Knob 10 48792100 Pin Jack, PHONES
1-14 27547100 PLAY-Knob 12 27553900 Disc Tray Panel
1-15 27547200 PAUSE-Knob 13 47716600 Leg Ass'y
1-16 27546500 RANDOM-Knob A14 49197200 Push SW., POWER
1-17
1-18 27546600
27546700 STOP-Knob
Knob, AMPS 15 27554100 Power Knob Ass'y (Included SW.
Rod and SW. Joint)
1-19 27546800 HKnob, AMPS 16 27321910 Dress Side Panel Left
1-20
1-21
1-22
27548900
27549000
27548800
Knob, FR
Knob, FF
MUSIC SCAN-Knob
17 48719700 M5x10 H. Socket Head Screw,
Dress Side Panel
Parts List <Top View>
Parts No. Stock No. Description
A138004700 Power Supply Cord (XX)
A48837700 Power Supply Cord (SS)
A46321000 Power Supply Cord (UL-CSA)
A38004500 Power Supply Cord (EU-SEV)
A49252900 Power Supply Cord (UK)
239104900 Strain Relief (UL-CSA)
39106000 Strain Relief (XX)
48913500 Strain Relief (EU-UK-SEV-SS)
A315031809 Power Transformer (XX-SS)
A15031802 Power .Transformer (UL-CSA)
A15031805 Power Transformer (EU-UK-SEV)
Parts No. Stock No. Description
449197500 IP Pin Jack Terminal, DIGITAL
OUT
548792100 2P Pin Jack Terri rial, LINE OUT
648587600 GND Terminal
727570010 Rod Ass'y
A848175200 Voltage Se!ector(><X)
A07204700 Slide SW., Voltage Selector
(EU-UK-SEV)
13

CD-X501/ CD-X501/
BH
9. SCHEMATIC DIAGRAM
rT''
*Design and specifications subject to change without notice for improvement.
*La prSsention et les sp6cifications sont susceptibles d'§tre modifies sans pr6avis par suites d'am6liorations 6ventuelles.
*Anderungen, die dem technischen Fortschritt dienen, bleiben vorbehalten.
MECHANISMi
^(t)
[selector j—\I
nQl,2 DTCII4YF
LJ33j_5 33jJ5_?0iJt1-Jlass j
3jj—
J“j”JJjutu1
'j
,Jj
SYMBOL OF FUNCTION
(f )RF SERVO |
(k) POWER AMP
(m) POWER SUPPLY
(n) INDICATOR
(o) SELECTOR
(p) FIXED PARTS
(t) MECHANISM
(v) DIGITAL/ANALOG |
(w) LOGIC CONTROL .
2SA952 2SB1015
2SA1283
2SC2001
2SA933S
2SA1115
2SC1740 2SC1488
2SC2603 2SC3851
2SD1406
INDICATOR (n)
SYMBOL
Copocitors
ACeromic
B.P Bi- Polor Electrolytic
•(ml Mylor
Resistors
Non- Inflommoble Resistor
Metol Film Resistor
Safety f%t v;
^'recommended by ttw manufacture
Signal Line
Signal Line (R-ch)
14

CD-X501/
10. HOW TO REPLACE MAIN PARTS
(See Exploded View of Mechanism Ass'y on Page 9)
A. Disc Tray Ass'y (T) (See Fig. 10-1 and 10-2)
1) Remove the bonnet.
2) Turn the loading gear ©clockwise until the clamp arm ass'y ©is
fully up.
3) Grasp the disc tray with your hand and pull it foward until it is se-
cured by the leaf switch holder (See Fig. 10-2).
4) Turn the leaf switch holder fully counterclockwise (in the direction
of the arrow )(See Fig. 10-2).
5) Pull the disc tray out forward.
Note:
Be sure to set the leaf switch holder back in its original position af-
ter installing the disc tray.
B. Disc Tray Panel (5)
1) Pull the disc tray ass'y forward.
2) Take off the disc tray panel from the disc tray as shown in Fig. 10-3.
C. Mechanism Ass'y
1) Remove the bonnet.
2) Remove the disc tray ass'y from mechanism ass'y.
3) Disconnect five lead wires connectors JP1, jP2, JP3, JP4 and JP5 from
the F-5931 board.
4) Take out the mechanism ass'y from the unit.
(Loosen four screws ©, see top view figure on page 12)
D. Clamp Arm Ass'y (T)
1) Take out the mechanism ass'y.
2) Push the clamp arm stopper ©as shown in Fig. 10-4, and remove
it from left side clamp arm stand.
3) Detach the clamp arm ass'y from clamp arm stand (See Fig. 10-4).
E. Loading Belt ®(See Fig. io-5)
1) Remove the disc tray ass'y from mechanism ass'y.
2) Remove the switch arm @from mechanism chassis.
3) Puli out the lock pin ®from cam gear.
4) Remove the cam gear @and drive gear @.
5) Remove the loading gear ©.
6) Remove the loading belt ©from the loading pulley ®.
7) Remove the loading pulley.
F. Spindle Motor ®
1) Remove the disc tray ass'y.
2) Take out the mechanism ass'y.
3) Remove the clamp arm ass'y from mechanism ass'y.
4) Detach the turntable ass'y ®from the shaft of spindle motor.
5) Remove the two screws ©fixing spindle motor.
Note:
Be sure to adjust the height whenever the spindle motor and turnta-
ble ass'y have been replaced.
1)Adjust the distance between the upper surface of the turntable
ass'y and the mechanism chassis to 19.4±0.1 mm as shown in
Fig. 10-6.
2) Fix them with the screw ©after distance has been adjusted.
Fig. 10-3
Fig. 10-4 Clamp Arm Ass'y
11
Clamp
Arm Stand—
(Ft)
FI“/fClamp Arm
“'Stand (L)
i,
Mecha. Chassis Clamp Arm Stopper @
15

CD-X501/
G. Pick-Up Ass'y @
1) Take out the mechanism ass'y from unit.
2) Remove the clamp arm ass'y.
3) Remove the two screws ®fixing the support rail ©(with pick up
ass'y ®).
4) Remove the pick up ass'y ©from the support rail.
Note:
1. Note when removing the pick-up for repairing.
Before removing the laser pick-up, short-circuit the terminals by
soldering. This is to prevent damage to the pick-up during
removal operation.
1
)Solder the pick-up terminals as shown in Fig. 10-7.
2) Disconnect the two lead connectors.
2. Note when replacing the pick-up.
1) Connect the two lead connectors of pick-up to the APC
mechanism board.
2) Unsolder the short-circuited terminal soldering for protection.
(See Fig. 10-7)
Fig. 10-7 Pick-up Ass'y
11.PACKING LIST 12. ACCESSORY LIST
Parts No. Stock No. Description
127306700 Vinyl Bag
227413700 Styrofoam Packing
327556020 Carton Case
Parts No. Stock No. Description
RS-1020 Remoto Controller
.SUM-3K Dry Battery
07193400 Pin Plug Cord
27636200 CS-1 Single CD Adaptor Ass'y
49037600 Operating Instruction (*E*F*S)
49037700 Operating Instruction (*G-l*Sw)
*Note:
E*F«S: English -French and Spanish Version
G-I-Sw: German-ltalian and Swedish Version
i
ft
SANSUI
SANSUI ELECTRIC CO., LTD.:
SANSUI ELECTRONICS CORPORATION:
SANSUI ELECTRONICS G.M.B.H.:
14-1, Izumi 2-chome, Suginami-ku Tokyo 168 Japan
PHONE: [phone] /TELEX: 232-2076 (International Division)
1250 Valley Brook Ave. Lyndhurst, N.J. 07071 U.S.A.
17150 South Margay Ave. Carson, California 90746 U.S.A.
3036 Koapaka Street. Honolulu, Hawaii 96819 U.S.A.
Paul Ehrlich Strasse 8, 6074 Rodermark 2, West Germany
(SM2-60) Printed in Japan (1988. 02. M) <Stock No. 36537600