Kenwood X-92-4750-0x, X-92-4730-0x, X-92-4400-0x Service Manual
DVD MECHANISM ASSY
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
© 2003-6 PRINTED IN JAPAN
SERVICE MANUAL
DESCRIPTION MECHANISM
X92-4400-00 (DVS-3000) :
X92-4400-01 (DVS-3001) :
X92-4730-00 (DVS-3010) :
X92-4730-01 (DVS-3011) :
CONSTRUCTION OF MAJOR PARTS
X92-4740-00 (DVS-3020) :
X92-4740-01 (DVS-3021) :
X92-4740-02 (DVS-3022) :
X92-4740-03 (DVS-3023) :
X92-4750-00 (DVS-3030)
X92-4750-01 (DVS-3031)
X92-4750-02 (DVS-3032)
X92-4750-03 (DVS-3033)
B53-0052-00 (N) 3365
FRONT CHASSIS ASSY
DISC GUIDE ASSY
OUTER CHASSIS ASSY
FLOATING SPRING x 4
CLAMP CHASSIS ASSY
DAMPER x 4
MAIN CHASSIS ASSY
ROLLER LEVER ASSY
DVD UNIT
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
DVD MECHANISM TABLE
MODEL NAME X92-4400-00 X92-4400-01 X92-4740-00 X92-4740-01 X92-4740-02 X92-4740-03
MECHANISM NAME DVS-3000 DVS-3001 DVS-3020 DVS-3021 DVS-3022 DVS-3023
X37 X37-1020-00 X37-1020-00 X37-1020-00 X37-1020-00 X37-1020-00 X37-1020-00
PICKUP T25-0222-05 T25-0222-05 T25-0222-05 T25-0222-05 T25-0222-05 T25-0222-05
DVD ™ ™™™™™
CD ™ ™™™™™
DISC PROTECTION MECHANISM × ™ ××™™
EXPORT PACKING SPECIFICATION
DESTINATION A0 A1 A2 A3 A4 A5
MODEL NAME X92-4730-00 X92-4730-01 X92-4750-00 X92-4750-01 X92-4750-02 X92-4750-03
MECHANISM NAME DVS-3010 DVS-3011 DVS-3030 DVS-3031 DVS-3032 DVS-3033
X37 X37-1020-01 X37-1020-01 X37-1020-01 X37-1020-01 X37-1020-01 X37-1020-01
PICKUP T25-0299-05 T25-0299-05 T25-0299-05 T25-0299-05 T25-0299-05 T25-0299-05
DVD ™ ™™™™™
CD × ЧЧЧЧЧ
DISC PROTECTION MECHANISM × ™ ××™™
EXPORT PACKING SPECIFICATION
DESTINATION B0 B1 B2 B3 B4 B5
×××™ × ™
×××™ × ™
USE GREASE TABLE
Grease Name Ref. No. Description Application position
1 CHASSIS MOLD GEAR CONTACT POINT
2 CHASSIS PICKUP CONTACT POINT
15 SLIDER GEAR CONTACT POINT
30 CAM ARM ASSY (21) CONTACT POINT
CFD-703ZA (BLUE) 33 GEAR GEAR WHOLE
34 GEAR GEAR WHOLE
35 GEAR GEAR WHOLE
36 GEAR GEAR WHOLE
37 GEAR GEAR WHOLE
38 GEAR GEAR WHOLE
PFD-602Z 1 CHASSIS SLIDER (17, 18) & LOCK ARM (25, 26) CONTACT POINT
KW-223 VM3 SLED MOTOR GEAR WHOLE
HF-30 44 SHAFT SHAFT WHOLE
2
DVD MECHANISM ASS'Y
( X92-4400-0x : DVS-300x / X92-4740-0x : DVS-302x )
DISC
VM1
SPINDLE
MOTOR
HALL BIAS
U.V.W COIL
Q6
5V AVR.
VM3
LOADING
MOTOR
LOADING SW
UNIT
A
B
C
D
4PIN
HALL SENSOR
VPU1
OPTICAL LASER
A5V
PICKUP
LD(650nm,780nm)
PD VCC
VM2
2 PHASE
FEED
STEPPING MOTOR
MOTOR
CN3 :
11PIN 4PIN
IC6
8
3
PWM
SOFT-SW
7V
MOTOR &
ACTUATOR
DRIVER
PWMx2
LA6505
CN2 :
7V
BTLx2
FG
M
DRV1.65 A/D
THERMISTER
CN4 :
4PIN
DVD LD/CD LD
VC(2.2V)
MD(DVVD/CD)
I/V OUT(DVD/CD)
HFM VCC
FO+/-,TR+/-
CN1 :
30PIN
VHALF(1.65V)
SLED
IOP DET
VHALF(1.65V)
IC7
BLOCK DIAGRAM
DVD UNIT (X37-1020-00)
A5V
IC2
STBY
SEN
SW
A5V
STDIO
SCK
D3.3V
SW
S4 : DOWN SW
S5 : SLT
IOP
DET
to A/D
A3.3V
BALANCE TRANSFER
VHALF(1.65V)
ANALOG SW
HD74LV2G66A
16.897849MHz
RESET
ADDRESS BUS
DATA BUS
MONITOR
4
7
APC
Tr
D/A
MUTE
LO/EJECT
A/D
A/D
A/D
IC11
S-24C04BMFN
HFM ON
MICROPROCESSOR
DF2328VTE25Q5TH1
SDA
SCK
EEPON
WP
4
EEPROM
Q1,2,4,5
IC1
FRONT END
PROCESSOR
AN8703FH
(DVD ONLY)
D3.3V
4
2
A5V
D5V
A3.3V
D3.3V
1.8V
IC4
X1
16.897849MHz
ARF
NARF
FBAL
TMBAL
JLINE
TSTSG
FE
AS
RFENV
OFTR
BDO
VREF2
VHALF(1.65V)
TRCRS
TE
TRDRV
SPDRV
FODRV
FG
CLKOUT
NRESET
18 8 3 4
IC9
UPC2918T
IC8
VOLTAGE DET
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
D3.3V
IC5
RESET IC
S-80829CLBB
D5V A3.3V 1.8VD3.3V
OPTICAL DISC
CONTROLLER
MN103S26E
A0-A17
D0-D7
XWR
XCS
XRD
IC10
3.3V REG
NJM2880U33
1.8V REG
S-80815CLBB
XINT0
XINT1
CPU IREQ
XWAIT ODC
5V
ON/OFF
NRST
S/P DIF
AUDIO OUT
ATAPI IF
DISC DET
MON(TZC,OFTR,DRDT)
CN4 :
50PIN
5V
to
MAIN
UNIT
7V
3
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
DVD MECHANISM ASS'Y
( X92-4730-0x : DVS-301x / X92-4750-0x : DVS-303x )
VM1
SPINDLE
MOTOR
HALL BIAS
U.V.W COIL
HALL SENSOR
Q6
5V AVR.
VM3
LOADING
MOTOR
LOADING SW
UNIT
A
B
C
D
4PIN
DISC
VPU1
OPTICAL LASER
A5V
PICKUP
LD(650nm)
PD VCC
VM2
2 PHASE
FEED
STEPPING MOTOR
MOTOR
CN3 :
11PIN 4PIN
IC6
8
3
PWM
SOFT-SW
7V
MOTOR &
ACTUATOR
DRIVER
LA6505
PWMx2
CN2 :
7V
BTLx2
FG
M
DRV1.65 A/D
THERMISTER
CN4 :
4PIN
DVD LD/CD LD
VC(2.2V)
MD(DVVD/CD)
I/V OUT(DVD/CD)
HFM VCC
FO+/-,TR+/-
CN1 :
30PIN
VHALF(1.65V)
SLED
IOP DET
VHALF(1.65V)
BLOCK DIAGRAM
DVD UNIT (X37-1020-01)
A5V
IC2
STBY
SEN
SW
A5V
SCK
STDIO
D3.3V
SW
IOP
DET
to A/D
A3.3V
BALANCE TRANSFER
VHALF(1.65V)
ANALOG SW
HD74LV2G66A
16.897849MHz
RESET
ADDRESS BUS
DATA BUS
MONITOR
S4 : DOWN SW
S5 : SLT
4
7
IC7
D/A
MUTE
LO/EJECT
MICROPROCESSOR
A/D
DF2328VTE25Q5TH1
A/D
A/D
SDA
SCK
WP
4
IC11
EEPROM
S-24C04BMFN
Q2,4,5
APC
Tr
IC1
FRONT END
PROCESSOR
AN8703FH
HFM ON
(DVD ONLY)
EEPON
D3.3V
4
2
A5V
D5V
A3.3V
D3.3V
1.8V
IC4
X1
16.897849MHz
ARF
NARF
FBAL
TMBAL
JLINE
TSTSG
FE
AS
RFENV
OFTR
BDO
VREF2
VHALF(1.65V)
TRCRS
TE
TRDRV
SPDRV
FODRV
FG
CLKOUT
NRESET
18 8 3 4
IC9
UPC2918T
IC8
VOLTAGE DET
D5V A3.3V 1.8VD3.3V
OPTICAL DISC
CONTROLLER
MN103S26E
A0-A17
D0-D7
XWR
XCS
XRD
IC10
3.3V REG
NJM2880U33
1.8V REG
S-80815CLBB
IC5
RESET IC
S-80829CLBB
XINT0
CPU IREQ
XINT1
XWAIT ODC
5V
ON/OFF
D3.3V
NRST
ATAPI IF
DISC DET
MON(TZC,OFTR,DRDT)
CN4 :
50PIN
5V
to
MAIN
UNIT
7V
4
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
COMPONENTS DESCRIPTION
● DVD UNIT (X37-1020-00/01)
Ref. No. Component Name Application/Function/Operation/Condition
IC1 AN8703FH RF signal processor
IC2 NJU7042 IOP detector OP amp
IC4 MN103S26E ATAPI interface, Servo/Spindle/Seek control, DVD ROM/CD ROM digital signal processor, 2M DRAM
IC5 S-80829CLBB System reset IC
IC6 LA6505 Motor & pickup actuator driver
IC7 DF2328VTE254Q8 System microprocessor
IC8 S-80815CLBB Voltage detector
IC9 UPC2918T 1.8V AVR
IC10 NJM2880U33 3.3V AVR
IC11 S-24C04BMFN Backup memory (EPROM)
IC12 HD74LV2G66A Servo filter on/off control
Q1 2SB0970 Laser diode power supply for CD (APC)
Q3 2SJ0536 Laser diode power supply for DVD (APC)
Q4 UN5114 DVD laser high frequency superposition circuit on-switch
Q5 UN5214
Q6 2SD1819A 5V AVR
Q9 UN5114 Loading motor control ( base L= ON )
Q10 UN5214 Loading motor control ( base H= ON )
Q13 UN5114 EEPROM power control (base L = ON )
Q15 UN5114 FG signal inverter transistor
MICROCOMPUTER’S TERMINAL DESCRIPTION
● System microprocessor : DF2328VTE254Q8 (DVD unit IC7)
Pin No. Pin Name I/O Purpose / Description / Processing / Operation
1 Vcc - Power supply input terminal
2~5 A0~A3 O Address bus
6 Vss - GND
7~14 A4~A11 O Address bus
15 Vss - GND
16~21 A12~A17 O Address bus
22 M2 I SODC monitor input terminal 2
23 (NC) - NC
24 Vss - GND
25 SW_AD I SW_A+D detect input terminal
26 SW_B I SW_B detect input terminal
27 SW_C I SW_C detect input terminal
28 M3 I SODC monitor input terminal 3
29 (NC) - NC
30 NINT0 I SODC interrupt signal 0 input terminal
31 NINT2 I SODC interrupt signal 2 input terminal
32 NINT1 I SODC interrupt signal 1 input terminal
5
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Purpose / Description / Processing / Operation
33 Vcc - Power supply input terminal
34~37 (NC) - NC (PULL UP)
38 Vss - GND
39~42 (NC) - NC (PULL UP)
43~46 CPUDT0~3 I/O DATA bus
47 Vss - GND
48~51 CPUDT4~7 I/O DATA bus
52 Vcc - Power supply input terminal
53 (NC) - NC
54 (NC) I/O Flash memory data output terminal
55 (NC) - NC
56 (NC) I Flash memory data input terminal
57 _LOADP O Loading control terminal (* Please see for Table of Loading/Eject Logic )
58 (NC) - NC
59 Vss - GND
60 SEL0 I Destination select input terminal (* Please see for Table of Destination )
61 SEL1 I Destination select input terminal (* Please see for Table of Destination )
62 LOADM O Loading control terminal (* Please see for Table of Loading/Eject Logic )
63 LO_MUTE O Loading driver muting control terminal (* Please see for Table of Loading/Eject Logic )
64 SL_MUTE O Sled driver muting control terminal
65 DRV_MUTE O Driver muting control terminal
66 FG I FG signal input terminal
67 M0 I SODC monitor input terminal 0
68~70 (NC) - NC
71 FWC I/O Flash memory data writhing control terminal
72 FWE I Flash memory data writhing control terminal
73 _RES I Reset signal input terminal
74 (NC) - NC
75 _STBY I Standby signal input terminal
76 Vcc - Power supply input terminal
77 XTAL I System clock input terminal (16.897849MHz)
78 EXTAL I System clock input terminal (16.897849MHz)
79 Vss - GND
80 (NC) - NC
81 Vcc - Power supply input terminal
82 (NC) - NC
83 _RD O Read signal output terminal
84 _HWR O Write signal output terminal
85 (NC) - NC
86 _WAIT I Request for wait statement input terminal
87 EEPON O EEPROM power supply control terminal
88 WP O EEPROM WP control terminal
89 SCL O EEPROM clock output terminal
90 SDA I/O EEPROM data input/output terminal
91 HFM O DVD laser high frequency superposition circuit control terminal
92 (NC) - NC
6
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Purpose / Description / Processing / Operation
93 AVcc - A/D converter Power supply input terminal
94 Vref - A/D converter reference voltage input terminal
95 TEMP_DET I Temperature sensor input terminal
96 (NC) - NC
97 IOP I IOP monitor terminal
98 (NC) - NC
99 VHALF I Reference 1.65V input terminal
100 DRV_HALF I Drive 1.65V input terminal
101 STEP_A O Sled motor control terminal A
102 STEP_B O Sled motor control terminal b
103 AVss - A/D converter GND terminal
104 Vss - GND
105 STDI O FEP serial data output terminal
106 SCK O FEP serial clock output terminal
107 SEN O FEP tip enable output terminal
108 STBY O FEP standby output terminal
109 (NC) - NC
110 M1 I SODC monitor input terminal 1
111 (NC) - NC
112 CEON O Servo output terminal
113 MD0 I Mode setup of operation input terminal
114 MD1 I Mode setup of operation input terminal
115 MD2 I Mode setup of operation / Flash memory writhing input terminal
116 SW_F I SW_F detect input terminal
117 SW_E I SW_E detect input terminal
118 SW_AD I SW_A+D detect input terminal
119 NCS O SODC chip select
120 (NC) - NC
● Loading/Eject Logic Table
Pin No. Pin Name Hi-Z Short-Brake CW CCW
57 _LOADP H H L H
62 LOADM L L L H
63 LO_MUTE L H H H
● Destination T able
DESTINATION
Pin No. DVD/CD DVD only
60 H L
61 H H
7
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
MECHANISM OPERATION EXPLANATION
CONSTRUCTION OF MAJOR PARTS
This mechanism consists of five units.
1. Main chassis assy (Maintenance of a disc and reading of
signal)
2. Roller lever assy (Disc loading)
Front chassis assy
3. Disc guides assy (Maintenance and positioning of a disc
and the crack to disc is prevented)
4. Outer chassis assy (The damper unit which protects disc
playback operation from external vibration)
5. DVD unit (Control for DVD mechanism)
Outer chassis assy
Disc guide assy
Damper x 4
Roller lever assy
OPERATION EXPLANATION
■ Disc Loading
• Turning the loading switch ON
When a disc is inserted in the mechanism that the detection
sliders will be open to the left and right side and the loading
switch B or C is ON. The above starts the loading motor rotation.
Note: In the case of 12cm disc, all switches (A, B, C, and D)
turn on and 12cm disc distinction is carried
Floating spring x 4
Clamp chassis assy
Main chassis assy
DVD UNIT
Disc loading sw
B
A
Detection slider (L) Detection slider (R)
ON
C
Disc
ON
D
8
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
MECHANISM OPERATION EXPLANATION
■ Loading the disc
When the loading motor starts rotation, the worm gear also
starts to turn as shown in the figure.
The rotation force is transmitted to the gear train.
When the force is transmitted to the final gear, the pull in the
disc for the mechanism.
Roller
Detection slider (L)
Detection slider (R)
VM3 : Loading
Disc
The disc is pulled in or out when the rollers are pushed against
the disc guide.
Disc in
Disc
Disc out
Disc guide
Roller
motor assy
BASIC CONSTRUCTION
The following figure is looked at the mechanism for the reverse-side.
Even after the disc has been inserted, loading switch is ON
and the loading motor and the gear train also rotated. Although the gear train is rotating but it has not contact yet in the
loading mechanism part.
The trigger slider becomes starting point of operation.
Trigger slider
Rear lock arm
Pinion gear
Loading slider
Drive arm
Lock slider
■ Operation of Trigger arm
When the rollers pull in the disc, the disc edge (disc outer
shape) pushes the trigger arm and rotates it.
INITAL POSITION
Clamper chassis
Trigger arm
Disc
Press of disc outer shape
center of rotation
Lock arm (R)
Lock arm (L)
■ Operation of the trigger slider and construction
of the loading slider
When the pinion gear is rotating but trigger slide has not contact to the rack gear.
The loading slider is assembled with the trigger slider and
pushed in the direction of the arrow by force of the spring.
Trigger slider
Pinion gear
Not contact with
Trigger slider
between
Rack gear
Pinion gear
Rack gear
( * inside of
trigeer slider)
Loading slider
Trigger slider
Spring
9
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