WX-4500X - Diagramas dediagramas.diagramasde.com/audio/WX-4500X-1.1.pdf · 17 WX-4500X 2 Move the arm (suction) in the arrow Direction and fit on projection. 1 Fit the arm (suction)
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1
CD player sectionSignal-to-noise ratio 92 dBFrequency response 10 – 20,000 HzWow and flutter Below measurable limitLaser Diode Properties Material GaAlAs Wavelength 780 nm Emission Duration Continuous Laser output power Less than 44.6 µW** This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block.
Cassette player sectionTape track 4-track 2-channel stereoWow and flutter 0.08 % (WRMS)Frequency response 30 – 18,000 HzSignal-to-noise ratio
Cassette type Dolby B NR Dolby NR offTYPE II, IV 67 dB 58 dBTYPE I 64 dB 55 dB
SERVICE MANUAL US Model
WX-4500X
CHANGER CONTROL AUDIO MASTER
SPECIFICATIONS
– Continued on next page –
Dolby noise reduction manufactured under license from Dolby Labo-ratories Licensing Corporation.“DOLBY” and the double-D symbol ; are trademarks of DolbyLaboratories Licensing Corporation.
AUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONIC DISTORTION23 watts per channel minimum continuous average power into4 ohms, 4 channels driven from 20 Hz to 20 kHz with no morethan 5% total harmonic distortion.
Antenna terminal External antenna connectorIntermediate frequency 10.7 MHz/450 kHzUsable sensitivity 8 dBfSelectivity 75 dB at 400 kHzSignal-to-noise ratio 65 dB (stereo),
70 dB (mono)Harmonic distortion at 1 kHz
0.7% (stereo),0.4% (mono)
Separation 35 dB at 1 kHzFrequency response 30 – 15,000 Hz
CAUTIONUse of controls or adjustments or performance of proce-dures other than those specified herein may result in haz-ardous radiation exposure.
Notes on Chip Component Replacement• Never reuse a disconnected chip component.• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCKOR BASE UNITThe laser diode in the optical pick-up block may suffer electrostaticbreakdown because of the potential difference generated by thecharged electrostatic load, etc. on clothing and the human body.During repair, pay attention to electrostatic breakdown and also usethe procedure in the printed matter which is included in the repairparts.The flexible board is easily damaged and should be handled withcare.
NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focused onthe disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, ob-serve from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARDThe pick-up flexible board in this set is secured to the optical pick-up with an adhesive tape. Once the tape is removed, an adheringforce becomes weak, and it cannot be reused.Therefore, if the optical pick-up is replaced, replace also the pick-up flexible board with a new one.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.
Inputs Telephone ATT control leadIllumination control leadBUS control inputconnectorBUS audio input connectorRemote controller inputconnectorAntenna input connector
Tone controls Bass ±10 dB at 62 HzTreble ±10 dB at 16 kHz
Loudness +8 dB at 100 Hz+2 dB at 10 kHz
Power requirements 12 V DC car battery(negative ground)
7. EXPLODED VIEWS7-1. Cover Section ................................................................... 467-2. Front Panel Section .......................................................... 477-3. Main Board Section ......................................................... 487-4. CD Mechanism Section (1) .............................................. 497-5. CD Mechanism Section (2) .............................................. 507-6. Tape Mechanism Section ................................................. 51
8. ELECTRICAL PARTS LIST ................................... 52
WX-4500X
4
WX-4500XSECTION 1GENERAL This section extracted from
instruction manual.
5
WX-4500X
6
WX-4500X
7
WX-4500X
8
WX-4500X
9 9
WX-4500X
Connections
10 10
WX-4500X
11
WX-4500XSECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL ASSY
Set Front Panel Assy CD Mechanism Block
Main Board Heat Sink
Floating Block Assy Roller Arm Assy
Optical Pick-up Assy
Tape Mechanism Block
CD Main Board Tension Spring (FL)
Chassis (Top) Assy
1 PTT 2.6x6
2 PTT 2.6x6
3 claw
4 claw
5 CN901
6 panel assy, front
12
WX-4500X
6 CD MAIN board
4 M 2x3.0
5 M 2x3.0
1 CNP102
2 CNJ102
claw
3 CNJ103
1 PTT 2.6x6
2 PTT 2.6x6
6 PTT 2.6x6
7 bracket (MD)
3 PTT 2.6x6
4 CD mechanism block
5 CNJ101
2-2. CD MECHANISM BLOCK
2-3. CD MAIN BOARD
13
WX-4500X
1 washer (M)
3 lever (LE.L)
4 spring (SPM), tension
5 spring (angle), tension
6 Fit lever in the direction of the arrow.
0 floating block assy
7 shaft8 shaft
9 shaft
2
1 spring (FL), tension
2 spring (FL), tension
2-4. TENSION SPRING (FL)
2-5. FLOATING BLOCK ASSY
14
WX-4500X
6 pick-up assy, optical
1 gear (woam wheel)
2 shaft (sled guide)
3 cover (P)
4 PTP 1.7x45 rack (feed)
3 Fit lever in the direction of the arrow.
1 spring (roller)
6 arm assy, roller
4 shaft
5 shaft2 spring (roller)
2-6. ROLLER ARM ASSY
2-7. OPTICAL PICK-UP ASSY
15
WX-4500X
1 PTT 2.6x10
2 PTT 2.6x6, ground point3 MAIN board
4 CN450
1 PTT 2.6x6
2 PTT 2.6x6
3 CN400
4 connector
5 chassis (TOP) assy
projection
projection
2-8. CHASSIS (TOP) ASSY
2-9. MAIN BOARD
16
WX-4500X
2 PTT 2.6x5
3 tape mechaniam block
1 PTT 2.6x5
1 PTT 2.6x10
2 PTT 2.6x10
3 PTT 2.6x10
5 PTT 2.6x10
6 heat sink
4 BTP 2.6x8
2-10. HEAT SINK
2-11. TAPE MECHANISM BLOCK
17
WX-4500X
2 Move the arm (suction) in the arrowDirection and fit on projection.
1 Fit the arm (suction) on the shaft.projection
SECTION 3ASSEMBLY OF MECHANISM DECK
Note : Follow the assembly procedure in the numerical order given.
3-1. HOUSING
3-2. ARM (SUCTION)
7 Holder the hanger by bending the claw.
1Install the catcher to the hanger.2 Install the hanger onto
two claws of the housing.
3 Put the housingunder A part.
6 Fit projection on D part.
4 Fit claw on B part.
5 Fit projection on C part.
8 Hold the hanger bybending the claw.
hanger
housing
D part
head
C part
B part
A part
Head, Housing Arm (Suction)
Guide (U) Main Motor Assy
Lever (LDG-A) / (LDG-B) Gear (Loading FT)Note : This set can be assemble according to the following sequence.
18
WX-4500X
3-3. LEVER (LDG-A) / (LDG-B)
3-4. GEAR (LOADING FT)
1 Fit the lever (LDG-A) onshafts A to C and install it.
2 Fit the lever (LDG-B) onshafts A and B and install it.
3 type-E stop ring 2.0
shaft A
shaft C
shaft A
shaft B
shaft B
5 Align hole in the gear (LDG-D)with hole the lever (LDG-A).
4 Move the lever (LDG-B)in the arrow direction.
2 tension spring (LD-2)
1
3 tension spring (LD-1)
7 polyethylene washer6 gear (loading FT)
gear (LDG-D)
gear (LDG-FB)
lever (LDG-A)hole
hole
19
WX-4500X
3-5. GUIDE (U)
3-6. MAIN MOTOR ASSY
1 claws
2 guide (C)
3 belt (25)
2 precision screws P 2x2
1 main motor assy(CAPSTAN/REEL) (M904)
30°
20
WX-4500X
set
frequency countertest tapeWS-48A(3 kHz, 0 dB)
SP OUT
4Ω
PRECAUTION1. Wipe the following components with an absorbent cotton cloth
moistened with alcohol before adjustment :PB head Pinch rollerIdler Rubber beltCapstan
2. Demagnetize the PB head using a head demagnetizer.3. Be careful not to use a magnetized screwdriver.4. After the adjustment is completed, lock the adjustment parts
using screws.5. Unless otherwise specified, make adjustments at the specified
voltage (14.4 V).
Torque Measurement
Mode Torque Meter Meter Reading
2.95 – 6.37 mN • m
FWD (30 – 65 g • cm)
CQ-102C(0.42 – 0.90 oz • inch)
FWD0.05 – 0.44 mN • m
Back Tension(0.5 – 4.5 g • cm)
(0.01 – 0.06 oz • inch)
2.95 – 6.37 mN • m
REV (30 – 65 g • cm)
CQ-102RC(0.42 – 0.90 oz • inch)
REV0.05 – 0.44 mN • m
(0.5 – 4.5 g • cm)Back Tension
(0.01 – 0.06 oz • inch)
5.88 – 19.61 mN • m
FF, REW CQ-201B (60 – 200 g • cm)
(0.83 – 2.78 oz • inch)
Tape Tension Measurement
Mode Tension Meter Meter Reading
FWD CQ-403A more than 90 g
REV CQ-403R (more than 3.17 oz)
SECTION 5ELECTRICAL ADJUSTMENTS
SECTION 4MECHANICAL ADJUSTMENTS
TAPE SECTION
Tape Speed AdjustmentMode : FWD play
0 dB = 0.775 V
Tape Speed Adjustment
-Tape Mechanism Block upper side-
• Adjustments of the tuner and CD sections have auto adjustmentsin this set.
Test tape
Type Signal Use
WS-48A 3 kHz, 0 dB Tape speed adjustment
P-4-D400 400 Hz, 0 dB Dolby level adjustment
Procedure:1. Playback the test tape in the FWD play mode.2. Verify that the reading on the digital frequency counter is in the
range between 3,010 and 3,300 Hz at the top of tape.3. If the specified value is not met, adjust the variable resistor on
the capstan motor so that the reading is 3,000 Hz at the FWDtop of tape.
Adjustment Location :
21
WX-4500X
-MAIN BOARD-(SIDE B)
TP-R TP-L
Dolby level adjustment
-MAIN BOARD-(SIDE A)
Dolby level adjustment
(R-CH)
Dolby level adjustment
(L-CH)
DOLBY Level AdjustmentSetting :Light down mark ;(DOLBY OFF)
Procedure :1. Set the FWD play mode.2. Push the MENU button and rotate the jog roller to display “NR”.
Then press “ — ” on the SEEK/AMS button to select “NR off”.(Dolby off)
3. Adjust RV400 for L-ch and RV401 for R-ch so that the levelmeter reads –6 ±0.5 dB (0.37 to 0.41 V).
1 RST O Reset signal output to the MN6627481RPMFA (IC101) “L” : Reset
2, 3 — O Not used in this set (open)
4 AVSS — Ground pin (for A/D converter)
5 — O Not used in this set (open)
6 J/E, CE I Destination initial setting pin Fixed at “H” in this set
7 A VREF1 I Reference voltage (+5 V) input (for D/A converter)
8 SUBQ I Sub code Q data input from the MN6627481RPMFA (IC101)
9 — O Not used in this set (open)
10 SQCK O Clock signal output for sub code Q data write to the MN6627481RPMFA (IC101)
11 STAT I Internal status signal input from the MN6627481RPMFA (IC101)
12 FL-M- > F O Data write signal to external flash memory Not used in this set (open)
13 MCLK/FL-CLK O Clock signal output for command data from the MN6627481RPMFA (IC101)
14, 15 — O Not used in this set (open)
16 BUS SI I Serial data input from SONY bus interface (IC750)
17 BUS SO O Serial data output to SONY bus interface (IC750)
18 BUS CLK I/O
Serial clock signal input/output for bus interface to the master controller (IC700) and
the display controller (IC900), or serial clock signal output to the SONY bus
interface (IC750)
19 — IThrough pin of serial clock signal for the bus interface
Connect to the BUS CLK (pin qk)
20 TLOCK I Tracking servo pull-in signal input from the MN6627481RPMFA (IC101) “L” : Active
21 FLOCK I Focus servo pull-in signal input from the MN6627481RPMFA (IC101) “L” : Active
22 SENCE I Internal status (SENSE) input from the MN6627481RPMFA (IC101)
23 — IThrough pin of serial clock signal for the bus interface
Connect to the BUS CLK (pin qk)
24 — O Through pin of bus serial data out Connect to the BUS SO (pin qj)
25, 26 — I Through pin of bus serial data in Connect to the BUS SI (pin qh)
27 MLD O Command road signal output from the MN6627481RPMFA (IC101)
28 MDATA O Command data signal output from the MN6627481RPMFA (IC101)
29 LINK OFF OLink on/off control signal output for SONY bus interface
“L” : Link off, “H” : Link on Not used in this set
30 A MUTE O Audio line mute control signal output “H” : mute on
31 MECHA ON O Power on/off control signal output of CD mechanism deck block “H” : Power on
32 — I Through pin of power supply Connect to the VDD (pins yk, uf)
33 VSS — Ground pin
34 — I Through pin of battery down voltage detection signal
35 CD ON O Power on/off control signal output of CD mechanism deck block
36 – 38 — O Not used in this set (open)
39 — I Through pin of bus on/off control signal
40 — O Not used in this set (open)
41 — I Test signal input of auto adjustment
42 SER OK O Effect discrimination out of auto adjustment “H” : OK
43 SER NG O Effect discrimination out of auto adjustment “H” : NG
44 – 51 — O Not used in this set (open)
52 TEXT IInitial setting input used to with/without the CD text decording function
“L” : without, “H” : with
53 SERCHK O Not used in this set (open)
54 P TEST O Not used in this set (open)
55 LIMSW ICD sled limit in detection switch input
“L” signal is input when the optical pick-up comes on the innermost perimeter
56, 57 — O Not used in this set (open)
SECTION 6DIAGRAMS
6-1. IC PIN DESCRIPTIONS
23
WX-4500X
*1 CD loading motor (M903) control
OperationSTOP LOADING EJECT BRAKE
Pin
FOUT (Pin uj) “L” “H” “L” “H”
ROUT (Pin uh) “L” “L” “H” “H”
Pin No. Pin Name I/O Pin Description
58 SW3 ICD loading detection switch input
“L” signal is input during CD disc loading and ejecting operations
59 SW4 ICD disc detection switch input
“L” signal is input when CD disc catching is completed
60 SYS RESET I
System reset signal input from the master controller (IC700) and the reset signal
oscillator (IC701) “L” : Reset
“L” signal is input for several hundreds of microseconds after the power is turned on,
the signal then turns “H”.
61 — O Not used in this set (open)
62 BUS ON I BUS on/off control signal input from the master controller (IC700) “L” : Bus on
63 SW2 ICD disc detection switch input
“L” signal is input when a disc is present at the CD disc inlet
64 B/U CHECK IDown voltage detection input from the SONY bus interface (IC750) and the battery
detection circuit “L” signal is input when the voltage is reduced
65 BLKCK I Clock signal input for sub code interrupt from the MN6627481RPMFA (IC101)
66 — O Not used in this set (open)
67 VSS0 — Ground pin
68 VDD — Power supply pin (+5 V)
69 X2 — Main system clock connect pin (5 MHz)
70 X1 — Main system clock connect pin (5 MHz)
71 VPP — Fixed at “L” in this set
72 — — Sub System clock connect pin Not used in this set (open)
73 XT1 — Sub System clock connect pin Not used in this set (Fixed at “H”)
74 VDD — Power supply pin (+5 V)
75 A VREF0 I Reference voltage input (for A/D converter) Fixed at “L” in this set
76 ROUT OCD loading motor (M903) control signal (direction of eject) output to the
BA5984FP (IC201) of CD mechanism deck block “H” : Active *1
77 FOUT OCD loading motor (M903) control signal (direction of loading) output to the
BA5984FP (IC201) of CD mechanism deck block “H” : Active *1
78, 79 — — Not used in this set (open)
80 GCTL O FE, TE gain control signal output
24
WX-4500X
• IC700 MB90574CPMT-G-356-BNDDE1 (MAIN SYSTEM CONTROL)Pin No. Pin Name I/O Pin Description
1 TU ON O Tuner on signal output
2 DOLON I/ODolby control signal output (“H” : dolby on)/dolby function corresponding
detection signal input (“L” : dolby function corresponding)
3 – 6 N. C. O O Not used in this set (open)
7 BUS ON O Bus on control signal output
8 VCC — Power supply pin (+5 V)
9 FLASH WR I Flash write mode detection signal input “L” : Flash write mode
10 EEDATA I/O EEPROM data signal input/output
11 EECLK O EEPROM clock signal output
12 RXD I Flash write data signal input
13 TXD O Flash write data signal output
14 N. C. O O Not used in this set (open)
15 BEEP O BEEP signal output
16 DPBOOT O Display microcomputer write control signal output
17 – 19 N. C. O O Not used in this set (open)
20 UNI SI I SONY bus data input
21 UNI SO O SONY bus data output
22 UNI CLK O SONY bus clock output
23 N. C. O O Not used in this set (open)
24 SIRCS I Remote control data signal input
25 – 28 POS0 – 3 I Position signal detection input
29 REEL1 I Reel stand rotation detection signal input
30 LM EJ O Tape mechanism loading motor control signal output (eject direction)
31 LM LOD O Tape mechanism loading motor control signal output (loading direction)
32 TP ON O Tape power control signal output
33 VSS — Ground pin
34 C — Capacitance pin of power stabilized
35 AD ON O Power control signal output of A/D conversion
36 N. C. O O Not used in this set (open)
37 CM-ON O Capstan motor control signal output
38 DVCC — D/A converter VREF input
39 DVSS — D/A converter ground pin
40, 41 N. C. O O Not used in this set (open)
42 AVCC — Analog power supply pin
43 A VRH — A/D converter VREF+ input
44 A VRL — A/D converter VREF– input
45 AVSS — Analog ground pin
46 KEY IN0 I Key 0 signal input
47 KEY IN1 I Key 1 signal input
48 DESTSEL0 I Destination initial setting pin (Fixed at “H” in this set)
49 RC IN0 I Rotary commander signal input
50 QUALITY I Tuner noise detection signal input Not used in this set (open)
51 FM AGC I FM AGC detection signal input
52 MPT I Tuner multi pass signal input Not used in this set (open)
53 VSM I S meter voltage signal input
54 VCC — Power supply pin (+5 V)
55, 56 N. C. O — Not used in this set (open)
57 E VOL MUTE O Electronic volume mute signal output “L” : mute on
58 AMP MUTE O Amplifier mute signal output
59 MUTE O System mute control signal output
60 AMP ON O Amplifier on signal output “L” : off/ “H” : on
61 SA LAT O Serial data lutch pulse output for spectrum analyzer
25 25
WX-4500X
Pin No. Pin Name I/O Pin Description
62 FL ON I FL ON control signal input
63 VSS — Ground pin
64 RE IN1 I Rotary encoder signal input
65 FSW IN I Frequency signal input for D/D converter oscillation
66 RE IN0 I Rotary encoder signal input
67 – 69 N. C. O O Not used in this set (open)
70 II DATA O Data signal output for tuner volume communication
71 II CLK O Clock signal output for tuner volume communication
72 RC IN1 I Rotary commander signal input
73 X1A — Low speed oscillation input (32.768 kHz)
74 X0A — Low speed oscillation input (32.768 kHz)
75 W UP O Wake up signal output
76 KEYACK I Key acknowledge detection signal input
77 BU CHK I Back up power detection signal input
78 DAVN I RDS data block synchronization detection signal input
79 TEL ATT I TEL mute detection signal input
80 TEST IN I Test mode setting detection signal input
81 ACC IN I ACC power detection signal input “L” : ACC on
82 FSW SFT O D/D converter control signal output
83 SYS RST O System reset signal output
84 RAM RST I RAM reset detection signal input
85 NS MASK O Noise mask output Not used in this set (open)
86 HTMX I Hardware standby signal input
87 MODE2 I Input for operation mode (Connect to VSS)
88 MODE1 I Input for operation mode (Connect to VSS)
89 MODE0 I Input for operation mode (Connect to VSS)
90 RST I Microcomputer reset signal input
91 VSS — Ground pin
92 X0 — High speed oscillation input (3.58 MHz)
93 X1 — High speed oscillation input (3.58 MHz)
94 VCC — Power supply pin (+5 V)
95 DSTSEL1 I Destination initial setting pin
96, 97 N. C. O O Not used in this set (open)
98 DIM ON O Dimer control signal output
99 ILL ON O Illumination power control signal output
100 ILL IN I Illumination line detection signal input
101 – 103 N. C. O O Not used in this set (open)
104 POWER ON O System power control signal output
105 – 110 N. C. O O Not used in this set (open)
111 PLAY/AMS O AMS music interval detection function control signal output
112 F/R O FWR/REV control signal output “H” : FWD/ “L” : REV
113 MTL I/OMetal control signal output (“H” : metal on)/Metal function corresponding detection
signal input
114 – 116 N. C. O O Not used in this set (open)
117 AMS IN IAMS music interval detection signal input
“L” : Audio signal detection, “H” : Audio signal no detection
118 TAPE MUTE ODuring FF/REW period, audio signal select control signal output
When the FF/REW mode is selected with ATA ON : “H”
119 VSS — Ground pin
120 N. C. O O Not used in this set (open)
2626
WX-4500X
6-2. BLOCK DIAGRAM — CD SECTION —
M902SLED
32
30
5RF AMP 6 8
DETECTOR&
I/V AMP
RF AMP
ENVELOPE
LPD AMP
AGC
RFDET
BDODET
OFERDET
DSL.PLL VCO
EFM/SUBCODEDEMODULATOR,
CD-TEXTBUFFER
INPUTPORT
MICROCOMPUTERINTERFACE
SERVO CPUA/O
CONVERTER
SUBCODEBUFFER
I-VAMP
FOCUSERROR AMP
FOCUS COILDRIVE
TRACKING COILDRIVE
SERVO TIMINGGENERATOR
SERVO TIMINGGENERATOR
TRACKINGERROR AMP
28
27
AUTOMATICPOWER
CONTROLQ101
2
1
1718
1516
23
26
SLED MOTORDRIVE
LOADING MOTORDRIVE
6
281
SPINDLE MOTORDRIVE 3
27
21
28
26
25
M
M901SPINDLE M
M903LOADING M
1211
22
24 CLVSERVO
8
12
79
20
281327
11
18 1
11 21
10 22
13 6530
17
18
16
62
64
60
73
75
14 1015 8
17
70
69
7776
63
58
59
55
10
15
44
68
53
38
14 36
12
23
20
19
18
26
25
24
39
35
31
30
40
3234
33
CIRC ERRORCORRECTION,
16K S-RAM
SOFTMUTING,
ATTENUATOR
TIMINGGENERATOR
1BIT D/ACONVERTER,PWM LOGIC
DIGITALDEEMPHASIS
DIGITALFILTER
59
58
35 31
SYS RST
BUS CHECK
BUS ON
BUS SI
BUS SO
BUS CLK
A-MUTE
BUS CLK
BUS SO
BUS ON
B/U CHECK
SYS RESET
BUS SI
B.P.F
NA
LD
F+
F–
T+
T–
F
E
NB
A
PDF
PDE
LD
PD PD
B
2-AXISDEVICE
(FOCUS)
(TRACKING)
RFO RFI ARF
ENV
OFTR
BDO
FEO
TEO
TEBPF
LDON
FIN–F+F–
T+T–
SLED+SLED–
SPDL+SPDL–
VOL+VOL–
TIN–
FINRIN
SLIN–
SPIN–
FBAL
TBAL
LDON
FOD
TRD
KICK
TVD
TRV
ECM
ECS
FBAL
TBAL
DSLB
ARF
RFDET
OFT
BDO
RFENVFETE
VDETVDET
NRFDET
109
1413
FOCUS/TRACKING COIL DRIVE,SLED/SPINDLE/LOADING
MOTOR DRIVEIC201
SENSE
FLOCK
TLOCK
MDATAMCLK
MLD
STAT
RST
16M
X2
OUTL
OUTR
SQCK
SUBQ
BLKCK
R-CH
X10116.93MHz
CD L
CD ON
A-MUTE
MECHA ON
SENSE
FLOCK
TLOCK
MDATAMCLKMLD
STAT
RST
X1
X2
FOUT
SW2
SW3
SW4
LIMSW
ROUT
SQCK
SUBQ
MEC
HA O
N
CD-O
N
BLKCK
CD MECHANISMCONTROLLER
IC103
X3015MHz
DIGITAL SIGNAL PROCESSOR,DIGITAL SIGNAL SERVO,
CLV SERVO,D/A CONVERTER,CD-TEXT
IC101
RF AMP,FOCUS/TRACKING ERROR AMP
IC102
OPTICALPICK-UPBLOCK
LASER DIODE
SW2(DISC DETECT)
SW3(LOADING DETECT)
SW4(CHUCKING DETECT)
SW5(LIMIT)
2 TUNERSECTION
6 TAPESECTION
3 TUNERSECTION
7TAPE
SECTION
• Signal path : CD
+
+
+
–
–
–
• R-ch is omitted due to same as L-ch.
(Page 27)
(Page 28)
(Page 27)
(Page 28)
27 27
WX-4500X
6-3. BLOCK DIAGRAM — TUNER SECTION —
ANT-AM
CDC L
TAPE L
CD L
AM
MPXI
MP
IN
AM DET
CD L
TAPE L
MPXANT-FM
1
12
8
40
10
SDA 12SCL 13
S-METER 14FM AGC 4
SDA 17SCL 18
VSM
SDA
SCL
S M
UTE
II DA
TA
II CL
K
E-VO
L M
UTE
MUTE53
19
70
59
AMP ON 60 STBY4AC GND
16AMP MUTE 58
BEEP
RESET
15
TEST IN 80
FM AGC51
EE DATA10EE CLK11
X1A73
XOA
X70032.768kHz
X4513.58MHz
74
3
13 3338
MUTE22
15
11
27
XO92
XI93
28
24
23
21
44
4
12
14
9
LPFIC451
VOL TONE BAL/FAD
ACC IN 81
ILL IN 100
TEL ATT 79
TU ON 1
POWER ON
TU8.5V
BATT
BATT
COM8V TU5VAUDIO 10V BATT
104
1
4 2
MUTEQ303
9
7
17
19
MUTEQ303
ACC CHECKQ903
ILLUM CHECKQ904
TEL ATTQ906
ANT REMOTESW
Q900(1/2)
ANT/AMPREMOTE SW
Q902
MUTE DRIVEQ300,301
AMP REMOTESW
Q900(2/2)
MUTEQ303
1
4 2 +5V REGQ1
REGIC1
J1(ANTENNA)
20
71
17
57
TU1TUNER UNIT
ELECTRONIC VOLUMEIC300
ADSO(L-CH)IC100
SA OUT
SA CLK
SA AUDIO
SA CLK
SW
FL
RLMUTEQ302
CN300
CN900
-1
-2
-3
-4
L
R
L
R
SUB WOOFER OUT(MONO)
BUS AUDIO IN
R-CH
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
TEST
ACC
ILL
2
1
10
9
3
7
ANT REM5
6
4
11
12
13
15
ATT14
BATT
AMP REM
16
R-CH
BATTF901+8V REG
IC301
POWER AMPIC170
MAINSYSTEM CONTROL
IC700(1/2)
4 TAPESECTION
1TAPESECTION
2CDSECTION
3 CDSECTION
5TAPESECTION
A-MUTE
• Signal path : FM : AM : CD : TAPE(PB)
IN1
IN3
OUT1+
OUT1–
OUT3+
OUT3–
• R-ch is omitted due to same as L-ch.
(Page 26)
(Page 28)
(Page 26)
(Page 28)
(Page 28)
2828
WX-4500X
6-4. BLOCK DIAGRAM — TAPE SECTION —
(Page 26)
(Page 27)
(Page 27)
37 18
19
16
7
17
14
20
113
112
2
118
117
111
25
24
39
EQ DOLBYNR
DOLBY LEVEL(L-CH)
AUTOMUSIC
SENSOR
BUS ONCONT
C-MOTORDRIVE
Q653,654
26
27
28
29
24
7249
46
66
64
8412
12 90
86
16
12
811
57
65
82
75
62
3031
37
32
76
43
35
79
RV400
TAPE +8.5VREG
Q650,651
+5V REGQ450,451
KEY ACK SWQ905
22
21
20
D/D CONVON/OFF SW
Q800
33
28
46
16 17
44
40
39
FL ON/OFFSW
IC801,Q803
FREQ OSCON/OFF SW
Q801
CD+8V REGQ809
AMPIC803,Q810Q812-814
BACK-UP+5V REG
Q804
+10V REGQ808
DIMMERON/OFF SW
Q907
ILLUMON/OFF SW
Q901
FL ON/OFFSW
Q810
ILLUMON/OFF SW
Q908
WAKE-UPSW
Q807
POWERCONTROLQ805,806
2
27
3482
38
51
97
98
101
62
50
112
52
8511
BUS ON/OFFSW
Q7506
5
4
7
8
3
2
1
9
10
8
7
12
1
86
75
74
64
60
8
9
11
12
OVER VOLTAGECHECKQ751
BATTCHECK10
RESET13 2
6
3
4
1
99
98
61
16
83
77
22
7
20
21
REMOTE CONTROLRECEIVER
PH960
CD8V
MECHA ON
CD ON
+8.5V
CD5V
BATT
BATT
R-CH
TAPE EQ/DOLBY/METAL/AMSIC400
FWD/REV
MTL/NORMAL
NR ON
L OUT
MUTE/TAPEAMS OUT
AMS/PLAY
TAPE L
F/R
UNI SI
UNI SO
BUS ON
UNI CLK
BU CHK
SYS RST
DP BOOT
SA LAT
DIM ON
ILL ON
W UP
FSW SFT
F SW IN
RESET
FL ON
MTL
DOL ON
TAPE MUTE
AMS IN
POS0
POS1
POS2
POS3
REEL1
LM EJLM LOD
CM ON
SIRCS
TP ON
KEY ACK
AD ON
RC IN1
RC IN0
KEY IN0
RE IN0
RE IN1
RAM RST
RST
HTMX
RXD
AMS ON
L
L
R
R
R-CH
R-CH
FWD
REV
HP901PLAYBACK HEAD
TAPEMECHANISM
BLOCK
LM+
LM–LOADING
MOTOR DRIVEIC650
RAMRESETIC702
RESETIC701
BU5V
BU5V
EN960
KEY
J900(REMOTE IN)
SW960(RESET)
MAIN SYSTEM CONTROLIC700(2/2) BU
S CL
K
BUS
SI
BUS
SO
BUS
ON
BUS
CHEC
K
SYS
RST
BUS CONTROLIC750
DATA
CLK
LINK OFFRES
SA CLK
SA AUDIO
IC901DISPLAY SYSTEM CONTROL
IC900
BOOT
SA LAT
BU INNMI
BUS ON
FL ON
UNI SO
UNI SI
UNI CK
FL SI
SA CLK
SA DATA
ILL ON
XTALBU5V
AUDIO 10V
AUDIO 10V
EXTAL
FL LAT
FL BK
FL SCK
FL SO
CN750(BUS CONTROL IN)
BATT
RESET
BATT
BATT
BATT
BATT
BATT
OUT1RT AUDIO 10V
CD8V
BU5V
CTL1
CTL2
CTL3
DTC4
DTC3
OUT2
OUT3
OUT4
POWER CONTROLIC800
T800
VDD
LAT
BK
CLK
SI
VH
F2 F2 F1 F1
FL700
X90118.432MHz
1TUNER
SECTION
6CD
SECTION
5TUNER
SECTION
4 TUNERSECTION
• Signal path : TAPE
7 CD SECTION
M904(CAPSTAN/REEL) M M905
(LOADING) M
1 2
D903,905908,911
D902,904,906
• R-ch is omitted due to same as L-ch.
DST SEL1
FM 200kAM 10k
FM 50kAM 9k
S700
95
(FREQUENCY SELECT) BU5V
(Page 26)
(Page 27)
29 29
WX-4500X
6-5. CIRCUIT BOARDS LOCATION
Note on Printed Wiring Boards:• X : parts extracted from the component side.• Y : parts extracted from the conductor side.• a : Through hole.• f : internal component.• : Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDSAND SCHEMATIC DIAGRAMS.(In addition to this, the necessary note isprinted in each block.)
Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolyticsand tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwisespecified.
• % : indicates tolerance.• f : internal component.• C : panel designation.
Caution:Pattern face side: Parts on the pattern face side seen from the(Side B) pattern face are indicated.Parts face side: Parts on the parts face side seen from the(Side A) parts face are indicated.
Note: The components identified by mark 0 or dotted linewith mark 0 are critical for safety.Replace only with part number specified.
• A : B+ Line.• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.• Voltage and waveforms are dc with respect to ground
under no-signal conditions.• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-tion tolerances.
• Waveforms are taken with a oscilloscope.Voltage variations may be noted due to normal produc-tion tolerances.
• Circled numbers refer to waveforms.• Signal path.
F : FMf : AME : TAPEJ : CD
MAIN board
MOTOR board
CD MAIN boardSW board
DISPLAY board
JOG board
• Waveforms— MAIN SECTION (2/3) —
1
2
32.768kHz
IC700 uf (X0A)
2.1Vp-p
3.9Vp-p
3.58MHz
IC700 os (X0)
• Waveforms— CD MECHANISM SECTION —(MODE : CD PLAY)
3
1
2
IC102 8 (ARF)
1.2Vp-p
Approx. 390mVp-p
IC102 w; (TEO)
IC101 td (PCK/DSLB)
16.9344MHz
IC101 tk (16M)
5MHz
IC103 u; (X1)
4
5.4Vp-p
5
3.6Vp-p
6
4.1Vp-p
0V
Approx. 180mVp-p
IC102 wd (FEO)
0V
1.9µsec
3030
WX-4500X
6-6. PRINTED WIRING BOARD — CD MECHANISM SECTION — • Refer to page 29 for Circuit Boards Location.
IC1 8-759-643-48 IC BA00ASFP-E2IC100 8-759-278-58 IC NJM4558V-TE2IC170 8-759-827-14 IC TA8268AHIC200 8-759-278-58 IC NJM4558V-TE2IC300 8-759-827-13 IC TDA7406T
IC301 8-759-476-23 IC BA08SFP-E2IC400 8-752-079-79 IC CXA2510AQ-T4IC451 8-759-278-58 IC NJM4558V-TE2IC650 8-759-527-33 IC LB1930M-TLMIC700 6-801-063-01 IC MB90574CPMT-G-356-BNDE1
IC701 8-759-571-49 IC XC61AN4102PRIC702 8-759-495-76 IC RN5VD33AA-TLIC750 8-759-449-89 IC BA8270F-E2IC800 8-759-060-94 IC MB3785APFV-G-BND-ERIC801 8-759-031-84 IC SC7S04F
IC803 8-759-075-70 IC TA75S393F
< JACK >
J1 1-785-503-11 JACK (ANTENNA)J900 1-566-822-41 JACK (REMOTE IN)
1-543-653-21 CORE ASSY, BEAD (DIVISION TYPE)(for POWER CORD)
302
301 303
304
62
WX-4500X
REVISION HISTORY
Clicking the version allows you to jump to the revised page.Also, clicking the version at the upper right on the revised page allows you to jump to the next revisedpage.
Ver. Date Description of Revision1.0 2001. 09 New1.1 2002. 10 Part number correction of optical pick-up assy (SPM-02009)