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DVD MECHANISM ASSY
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
SERVICE MANUAL
© 2003-6 PRINTED IN JAPAN B53-0052-00 (N) 3365
DESCRIPTION MECHANISM
X92-4400-00 (DVS-3000) : X92-4740-00 (DVS-3020) : X92-4750-00 (DVS-3030) X92-4400-01 (DVS-3001) : X92-4740-01 (DVS-3021) : X92-4750-01 (DVS-3031) X92-4730-00 (DVS-3010) : X92-4740-02 (DVS-3022) : X92-4750-02 (DVS-3032) X92-4730-01 (DVS-3011) : X92-4740-03 (DVS-3023) : X92-4750-03 (DVS-3033)
CONSTRUCTION OF MAJOR PARTS
OUTER CHASSIS ASSY
FRONT CHASSIS ASSY
FLOATING SPRING x 4
CLAMP CHASSIS ASSY
DISC GUIDE 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 |
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|
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 |
× |
× |
× |
× |
× |
× |
|
|
|
|
|
|
|
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 |
|
|
|
|
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2 |
CHASSIS |
PICKUP CONTACT POINT |
|
|
|
|
|
15 |
SLIDER |
GEAR CONTACT POINT |
|
|
|
|
|
30 |
CAM |
ARM ASSY (21) CONTACT POINT |
|
|
|
|
CFD-703ZA (BLUE) |
33 |
GEAR |
GEAR WHOLE |
|
|
|
|
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34 |
GEAR |
GEAR WHOLE |
|
|
|
|
|
35 |
GEAR |
GEAR WHOLE |
|
|
|
|
|
36 |
GEAR |
GEAR WHOLE |
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|
|
|
|
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
|
|
|
|
|
BLOCK DIAGRAM |
||
DVD MECHANISM ASS'Y |
|
|
|
|
|||
( X92-4400-0x : DVS-300x / X92-4740-0x : DVS-302x ) |
|
||||||
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|
DISC |
|
|
DVD UNIT (X37-1020-00) |
||
|
|
|
|
|
|
||
VM1 |
|
VPU1 |
|
|
A5V |
IC2 |
|
|
|
DVD LD/CD LD |
|
||||
SPINDLE |
|
|
|
|
IOP |
||
|
|
|
|
|
|||
MOTOR |
|
|
|
VC(2.2V) |
Q1,2,4,5 |
||
|
|
|
DET |
||||
|
|
OPTICAL LASER |
MD(DVVD/CD) |
|
|||
|
|
APC |
|
||||
|
A5V |
PICKUP |
|
I/V OUT(DVD/CD) |
to A/D |
||
|
|
LD(650nm,780nm) |
HFM VCC |
Tr |
|||
|
|
|
|
||||
BIASHALL COILU.V.W SENSORHALL |
PD VCC |
|
|
FO+/-,TR+/- |
A5V |
|
|
MOTOR |
STEPPING MOTOR |
|
A3.3V |
||||
CN1 : |
IC1 |
||||||
|
|
|
|
||||
|
|
|
|
|
|||
|
VM2 |
2 PHASE |
|
30PIN |
|
BALANCE TRANSFER |
|
|
|
|
|
|
|||
|
FEED |
|
|
|
4 |
||
|
|
|
|
|
|||
|
CN3 : |
|
CN2 : |
FRONT END |
7 |
||
|
|
|
|||||
|
11PIN |
|
4PIN |
|
PROCESSOR |
||
|
|
IC6 |
7V |
|
AN8703FH |
VHALF(1.65V) |
|
|
|
|
|
STBY SEN SCK STDIO |
|
||
|
8 |
PWMx2 |
|
VHALF(1.65V) |
HD74LV2G66A |
||
|
|
|
BTLx2 |
|
|
|
|
3PWM SOFT-SW
Q6 |
7V |
|
|
|
|
|
|
|
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MOTOR & |
|
|
|
|
|
|
|
|
|
|
FG |
|
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|
|
|
|
|
|
5V AVR. |
ACTUATOR |
|
|
|
|
|
D3.3V |
|
|
|
DRIVER |
|
IC7 |
|
|
|
|
|
|
|
LA6505 |
|
|
|
|
|
|
|
|
|
SLED |
|
|
|
ONHFM |
ONLY)(DVD |
|
|
|
|
M |
D/A |
|
|
|
|
|||
VM3 |
|
|
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|
|
||||
|
|
MUTE |
|
|
|
|
|
||
LOADING |
|
|
|
|
|
|
16.897849MHz |
||
|
|
LO/EJECT |
|
|
|
||||
MOTOR |
|
|
|
|
|
RESET |
|||
|
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|
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|
|
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|
|
DRV1.65 |
A/D |
|
MICROPROCESSOR |
ADDRESS BUS |
||||
|
|
IOP DET |
A/D |
|
DATA BUS |
||||
|
TH1 |
|
DF2328VTE25Q5 |
|
|||||
|
|
|
|
|
|
||||
|
THERMISTER |
A/D |
SDA SCK WP EEPON |
SW |
SW |
|
|||
|
|
VHALF(1.65V) |
A/D |
MONITOR |
|||||
|
|
|
|
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||
|
|
|
|
|
|
|
|
|
|
LOADING SW
UNIT |
|
CN4 : |
4 |
D3.3V |
|
|
IC11 |
S4 : DOWN SW |
|||
|
A |
4PIN |
|
||
|
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|||
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EEPROM |
|
S5 : SLT |
|
|
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||
|
B |
|
S-24C04BMFN |
|
|
|
C |
|
|
4 |
|
|
D |
|
|
|
|
4PIN
|
|
X92-4400-0x/4730-0x |
||||||
|
|
X92-4740-0x/4750-0x |
||||||
|
|
|
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|
IC5 |
|
D3.3V |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
RESET IC |
||
|
X1 |
|
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|
|
S-80829CLBB |
||
|
16.897849MHz |
|
|
|
|
|
|
|
|
|
D5V |
A3.3V |
D3.3V |
1.8V |
|
CN4 : |
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|
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|
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|
|
|
|
IC4 |
|
|
|
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50PIN |
|
ARF |
|
|
|
|
|
NRST |
|
|
NARF |
|
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FBAL |
|
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TMBAL |
|
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JLINE |
|
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S/P DIF |
|
TSTSG |
|
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FE |
|
|
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AUDIO OUT |
|
AS |
|
|
|
|
|
|
|
|
RFENV |
|
|
|
|
|
|
ATAPI IF |
|
OFTR |
|
|
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|
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|
BDO |
|
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VREF2 |
|
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|
5V |
|
|
|
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|
|
|
|
|
|
VHALF(1.65V) |
|
OPTICAL DISC |
|
to |
|||
|
|
|
|
CONTROLLER |
|
MAIN |
||
|
TRCRS |
|
|
MN103S26E |
|
UNIT |
||
|
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|
||||
|
TE |
|
|
|
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|
|
7V |
|
TRDRV |
|
|
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|
|
MON(TZC,OFTR,DRDT) |
|
2 |
SPDRV |
|
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FODRV |
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FG |
|
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|
|
CPU IREQ XWAIT ODC |
|
|
|
CLKOUT NRESET |
A0-A17 |
D0-D7 |
XCS XWR |
XRD XINT0 XINT1 |
DISC DET |
||
|
|
|||||||
|
|
18 |
8 |
3 |
4 |
|
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5V |
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A5V |
|
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IC10 |
|
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D5V |
|
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A3.3V |
|
|
3.3V REG |
|
|
|||
|
|
NJM2880U33 |
|
|
||||
D3.3V |
|
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|
||||
IC9 |
|
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||
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1.8V |
1.8V REG |
|
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||
|
UPC2918T |
|
ON/OFF |
|
|
|||
|
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|
||||
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IC8 |
|
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VOLTAGE DET |
|
|
||||
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||||
|
|
S-80815CLBB |
|
|
|
|||
3
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
BLOCK DIAGRAM
DVD MECHANISM ASS'Y |
|
|
|
|
|||
( X92-4730-0x : DVS-301x / X92-4750-0x : DVS-303x ) |
DVD UNIT (X37-1020-01) |
||||||
|
|
DISC |
|
|
|||
|
|
|
|
|
|
||
VM1 |
|
VPU1 |
|
|
A5V |
IC2 |
|
|
|
DVD LD/CD LD |
|
||||
SPINDLE |
|
|
|
|
IOP |
||
|
|
|
|
|
|||
MOTOR |
|
|
|
VC(2.2V) |
Q2,4,5 |
||
|
|
|
DET |
||||
|
|
OPTICAL LASER |
MD(DVVD/CD) |
|
|||
|
|
APC |
|
||||
|
A5V |
PICKUP |
|
I/V OUT(DVD/CD) |
to A/D |
||
|
|
LD(650nm) |
|
HFM VCC |
Tr |
||
|
|
|
|
|
|||
BIASHALL COILU.V.W SENSORHALL |
PD VCC |
|
|
FO+/-,TR+/- |
A5V |
|
|
MOTOR |
STEPPING MOTOR |
|
A3.3V |
||||
CN1 : |
IC1 |
||||||
|
|
|
|
|
|||
|
VM2 |
2 PHASE |
|
30PIN |
|
BALANCE TRANSFER |
|
|
|
|
|
|
|||
|
FEED |
|
|
|
4 |
||
|
|
|
|
|
|||
|
CN3 : |
|
CN2 : |
FRONT END |
7 |
||
|
|
|
|||||
|
11PIN |
|
4PIN |
|
PROCESSOR |
||
|
|
IC6 |
7V |
|
AN8703FH |
VHALF(1.65V) |
|
|
|
|
|
STBY SEN SCK STDIO |
|
||
|
8 |
PWMx2 |
|
VHALF(1.65V) |
HD74LV2G66A |
||
|
|
|
BTLx2 |
|
|
|
|
3PWM SOFT-SW
Q6 |
7V |
|
|
|
|
|
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|
|
MOTOR & |
|
|
|
|
|
|
|
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|
FG |
|
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|
5V AVR. |
ACTUATOR |
|
|
|
|
|
D3.3V |
|
|
|
DRIVER |
|
IC7 |
|
|
|
|
|
|
|
LA6505 |
|
|
|
|
|
|
|
|
|
SLED |
|
|
|
ONHFM |
ONLY)(DVD |
|
|
|
|
M |
D/A |
|
|
|
|
|||
VM3 |
|
|
|
|
|
||||
|
|
MUTE |
|
|
|
|
|
||
LOADING |
|
|
|
|
|
|
16.897849MHz |
||
|
|
LO/EJECT |
|
|
|
||||
MOTOR |
|
|
|
|
|
RESET |
|||
|
|
|
|
|
|
|
|
|
|
|
DRV1.65 |
A/D |
|
MICROPROCESSOR |
ADDRESS BUS |
||||
|
|
IOP DET |
A/D |
|
DATA BUS |
||||
|
TH1 |
|
DF2328VTE25Q5 |
|
|||||
|
|
|
|
|
|
||||
|
THERMISTER |
A/D |
SDA SCK WP EEPON |
SW |
SW |
|
|||
|
|
VHALF(1.65V) |
A/D |
MONITOR |
|||||
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
LOADING SW
UNIT |
|
CN4 : |
4 |
D3.3V |
|
|
IC11 |
S4 : DOWN SW |
|||
|
A |
4PIN |
|
||
|
|
|
|||
|
|
EEPROM |
|
S5 : SLT |
|
|
|
|
|
||
|
B |
|
S-24C04BMFN |
|
|
|
C |
|
|
4 |
|
|
D |
|
|
|
|
4PIN
|
|
|
|
|
IC5 |
|
D3.3V |
|
|
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|
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|
|
||
|
|
|
|
|
|
RESET IC |
||
|
X1 |
|
|
|
|
S-80829CLBB |
||
|
16.897849MHz |
|
|
|
|
|
|
|
|
|
D5V |
A3.3V |
D3.3V |
1.8V |
|
CN4 : |
|
|
|
|
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|
|
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|
|
IC4 |
|
|
|
|
|
|
50PIN |
|
ARF |
|
|
|
|
|
NRST |
|
|
NARF |
|
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|
|
|
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|
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FBAL |
|
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TMBAL |
|
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JLINE |
|
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|
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|
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|
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TSTSG |
|
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|
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|
|
FE |
|
|
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|
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|
AS |
|
|
|
|
|
|
|
|
RFENV |
|
|
|
|
|
|
ATAPI IF |
|
OFTR |
|
|
|
|
|
|
|
|
BDO |
|
|
|
|
|
|
|
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VREF2 |
|
|
|
|
|
|
5V |
|
|
|
|
|
|
|
|
|
|
VHALF(1.65V) |
|
OPTICAL DISC |
|
to |
|||
|
|
|
|
CONTROLLER |
|
MAIN |
||
|
TRCRS |
|
|
MN103S26E |
|
UNIT |
||
|
|
|
|
|
||||
|
TE |
|
|
|
|
|
|
7V |
|
TRDRV |
|
|
|
|
|
MON(TZC,OFTR,DRDT) |
|
2 |
SPDRV |
|
|
|
|
|
|
|
|
FODRV |
|
|
|
|
|
|
|
|
FG |
|
|
|
|
CPU IREQ XWAIT ODC |
|
|
|
CLKOUT NRESET |
A0-A17 |
D0-D7 |
XCS XWR |
XRD XINT0 XINT1 |
DISC DET |
||
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18 |
8 |
3 |
4 |
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5V |
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A5V |
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IC10 |
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D5V |
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A3.3V |
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3.3V REG |
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NJM2880U33 |
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D3.3V |
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IC9 |
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1.8V |
1.8V REG |
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UPC2918T |
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ON/OFF |
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IC8 |
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VOLTAGE DET |
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S-80815CLBB |
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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 |
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|
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Q5 |
UN5214 |
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|
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 ) |
|
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Q15 |
UN5114 |
FG signal inverter transistor |
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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 |
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|
|
|
2~5 |
A0~A3 |
O |
Address bus |
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|
|
|
6 |
Vss |
- |
GND |
|
|
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|
7~14 |
A4~A11 |
O |
Address bus |
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15 |
Vss |
- |
GND |
|
|
|
|
16~21 |
A12~A17 |
O |
Address bus |
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22 |
M2 |
I |
SODC monitor input terminal 2 |
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23 |
(NC) |
- |
NC |
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24 |
Vss |
- |
GND |
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25 |
SW_AD |
I |
SW_A+D detect input terminal |
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26 |
SW_B |
I |
SW_B detect input terminal |
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27 |
SW_C |
I |
SW_C detect input terminal |
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|
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28 |
M3 |
I |
SODC monitor input terminal 3 |
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29 |
(NC) |
- |
NC |
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30 |
NINT0 |
I |
SODC interrupt signal 0 input terminal |
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31 |
NINT2 |
I |
SODC interrupt signal 2 input terminal |
|
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32 |
NINT1 |
I |
SODC interrupt signal 1 input terminal |
|
|
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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) |
|
|
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38 |
Vss |
- |
GND |
|
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|
|
39~42 |
(NC) |
- |
NC (PULL UP) |
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|
43~46 |
CPUDT0~3 |
I/O |
DATA bus |
|
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47 |
Vss |
- |
GND |
|
|
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|
48~51 |
CPUDT4~7 |
I/O |
DATA bus |
|
|
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52 |
Vcc |
- |
Power supply input terminal |
|
|
|
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53 |
(NC) |
- |
NC |
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54 |
(NC) |
I/O |
Flash memory data output terminal |
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55 |
(NC) |
- |
NC |
|
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56 |
(NC) |
I |
Flash memory data input terminal |
|
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|
57 |
_LOADP |
O |
Loading control terminal (* Please see for Table of Loading/Eject Logic ) |
|
|
|
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58 |
(NC) |
- |
NC |
|
|
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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 Table
|
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)
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
Front chassis assy
Floating spring x 4
Clamp chassis assy
Disc guide assy
Damper x 4
Main chassis assy
Roller lever assy
DVD UNIT
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
|
Disc loading sw |
|
|
A |
B |
C |
D |
Detection slider (L) |
Detection slider (R) |
||
Disc
ON ON
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
motor assy
Disc
The disc is pulled in or out when the rollers are pushed against the disc guide.
Disc in |
Disc guide |
|
Disc
Disc out
Roller
BASIC CONSTRUCTION
The following figure is looked at the mechanism for the re- verse-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 |
Trigger arm |
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.
Clamper chassis
Trigger slider
Disc
Pinion gear
Press of disc outer shape
Not contact with |
Rack gear |
Loading slider |
|
( * inside of |
|||
|
|||
Trigger slider |
trigeer slider) |
|
|
between |
|
|
|
Rack gear |
|
|
|
Pinion gear |
|
|
|
|
|
Trigger slider |
Spring
9
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