Samsung Electronics Co SW248 Internal CD-R/RW Drive User Manual SW 248B E BG68 XXXXXA

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Document ID	259856
Application ID	F3QaNxwbzIN5XTdwmlm23g==
Document Description	Users Manual 1
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	142.4kB (1779966 bits)
Date Submitted	2002-07-30 00:00:00
Date Available	2002-07-30 00:00:00
Creation Date	2002-07-30 17:16:25
Producing Software	Acrobat Distiller 4.0 for Macintosh
Document Lastmod	2002-07-30 17:16:39
Document Title	SW-248B_E-BG68-XXXXXA
Document Creator	+QuarkXPress3.3k: LaserWriter 8 KH-8.6
Document Author:	soo

CD-R/RW DRIVE
SW-248B
SERVICE
Manual
CONTENTS
• Specifications
• Cautions at Service
• External Part Name
• Necessary equipments and Specifications in needing
Service(P/U replacement)
• Exploded Views & Part List
• Packing Options
• Block Diagram
• Troubleshooting
• Circuit Diagram
• Main Components Block Diagram & Pin Descriptions
• Electrical Parts List
The design and part of this product is subject to change without prior notice for performance improvement.
Specifications
1. General Specifications
Resd(MAX) : 2,000~6,000KBytes/Sec(CAV 40X)
- Access time : 110ms (Random. TYPICAL)
- Buffer Capacity : 8Mbyte
- Error ratio : Mode 1: Below 10-12
Mode 2: Below 10-9
- Frequency response : 20Hz~20kHz (Lineout)
100Hz~20kHz (H/P out)
- Signal to noise ratio : 70dB(1kHz, Lineout)
- Distortion factor : 0.15% Less than(1KHz)
- Channel separation : 65dB(1kHz, Lineout)
55dB(1kHz, H/P out)
- Used laser : Semiconductor laser
- Audio Output : Line out 0.75 ±20%(Vrms), 47KΩ
H/P out 0.65 ±20%(Vrms), 33Ω
- Drive type : Computer built-in
- Power consumption : DC +5V, 1.5A
DC +12V, 1.5A
- Dimensions : 146mm (W)X42mm (H)X184mm (L)
- Net Weight : 750g
2. Electrical Features
- Interface : ATAPI BUS(IDE)
- Data transfer rate :
Write(CD-R) : 600KBytes/Sec(4X)
1,200KBytes/Sec(8X)
1,800KBytes/Sec(12X)
2,400KBytes/Sec(16X)
3,000KBytes/Sec(20X)
3,600KBytes/Sec(24X)
4,200KBytes/Sec(28X)
4,800KBytes/Sec(32X)
Write(CD-RW) : 600KBytes/Sec(4X)
Write(High Speed CD-RW) : 600KBytes/Sec(4X)
1,500KBytes/Sec(10X)
Cautions at Service
1. General Items
2. Earthing cautions at handling Pick-up
1) Be careful not to have your eyes or a part of body touch withlaser diode at repair because this product uses laser diode.
2) Do not disassemble Pick-up at repair. If the laser diode is
bad, replace the entire Pick-up.
3) Keep away from TV or other electrical units at repair to
prevent influence from surrounding units.
4) If you replace the parts during repair, be sure to unplug the
power cable before replacement.
5) If you insert a disc into the drive, be sure to load it corectly.
6) Because this unit can't be used by itself, surely mount it
on PC (586 DMA support) and check the operations in
use of private device driver floppy diskette.
Refer to Instruction manual.
7) This unit has many parts with features related to safety and
especially, for essential parts, the importance is indicated on
circuit diagram and part list.
Be certain to use the parts with same specifications at
replaing these parts.
- Because the laser diode in optical Pick-up is subject
to get out of order due to the potential difference occurring
by electricity load charged in clothes or bodies, observe the
following earthing items at handling.
1) Body earthing(hand) : Be sure to wear a wrist strip
with one side earthed.(Impedance : Below 104).
It removes the electricity formed in body.
2) Work table earthing : Put the earthed conductive plate
(Impedance : Below 104) such as copper plate on work
table.
3) Cautions for clothes : Do not have any clothes touch with
Pick-up because the electricity formed in clothes is
destroyed easily.
Electricity sensing device
4) Make use of only anti-static soldering release unit.
A soldering release unit not to be classified as
antistatic may generate the enough charge to damage
ESD unit.
Some semiconductor units may be damaged easily by
electricity.
These elements are called as electricity sensing
device(ESD) in general. For example, integrated circuit,
field effect transister, semiconductor chip.
The following methods have to be used to reduce the
accident of element damage generated by electricity.
5) Never use a Freon-propelling chemical product.
It may generate the enough charge to damage ESD.
6) Untill installing ESD unit for replacement, never it from
protection package.
(Most of ESD unit for replacement have lead
composed of package shorted electrically by
conductive foam, aluminium or similar conductive
material.)
1) Emit all electric charges in your body through contact
with earthing materail at once before handling a
semiconductor factor or device including it.
In other way, make use of commercial wristlet against
electricity
It shall be detached before power impression to the
unit on testing because of shock.
7) Contact with shassis including ESD or protection
material in circuit parts just before detaching the
protection material from lead of ESD unit for replacement
2) After detaching an electrical device including ESD, it
shall be placed on conductive surface such as
aluminium to prevent the charge acummulation and
unit exposure.
Note : Be sure to avoid the power impression to the
shassis or circuit and observe the safety instruction.
8) Minimize the body action at handling an unpacked
ESD unit for replacement.
(Otherwise, an unconscious action, so to speak,
friction between clothes or foot lifting from carpet floor
may generate the enough charge to damage ESD
unit.)
3) Utilize only the soldering iron with earthed end for
ESD soldering or release
Safety instructions
11) Overload : Be careful that the wall outlet and
expanded cord is overloaded due to danger of fire
and electrical shock.
12) Never insert a substance or liquid into this product.
It may cause fire or shorck by contact with voltage
point or short.
13) Part replacement : The service engineer has to use
the parts of same specification at replacement.
Otherwire, fire, shock or other dangers may be
occurred.
14) Safety check : Be sure to perform the safety check
at service or repair completion
1) Read all safety and operational manuals before
operating this product
2) Keep the safety and operational manuals for future
reference.
3) Observe all precations and operational instructions in
or on the surface of this product.
4) Follow all operation and maintenance cautions.
5) Be sure to plug off the power cable before cleaning.
Use a dry cloth to clean a dusty cover of cabinet
instead of liquid or aersol cleaner.
6) Never use a attachment not to be recommended by
this company. It may result in danger and damage.
7) Never use this product around water such as
bathtub, washbasin, laundry machine, swimming pool
or lakeside.
8) Never place this product on bed, sofa or around
radiator and heater.
9) Power : Utilize the only power displayed on lebel
If the power type can't be checked, call to dealer or
Korea Electricity, Co, Ltd. Refer tooperate this product
by battery or other power.
10) Lightning : Plug off the power cable for product
protection during thunder and lightning flashes or this
product is unused for a long time.
Importance : This product includes special impotrant
parts on safety.
These parts are indicated by on schematic
diagram.
At replacement of these parts, use the
parts of same specification due to shock,
fire or other dangers.
Never transform the original design without
permission of this company.
External Part Name
1. Front
Up/Down
Volume
Earphhone jack
Emergency
HOLE
Disc tray
Stop/Open
button
LED
2. Rear
Sound
output terminal
Digital
output terminal
(Optional)
Master/Slave
select pin
Interface
terminal
Power terminal
Disassembly Diagram
Device Part List
PART NAME
CODE No
ASSY DECK
BG97-02248A
BG60-00009A
BG97-02250A
BG61-00203A
BG66-00061A
BG66-00032A
BG66-00044A
BG97-00789A
BG31-00027A
BG66-00033A
BG66-00034A
BG66-00062A
BG66-00060A
BG97-02251A
BG61-00078A
BG73-00012A
BG73-00027A
BG61-00238A
BG61-00237A
BG31-00025A
BG61-00180A
BG61-00122A
BG31-00036A
BG97-02247A
BG59-00017A
BG63-00084A
BG59-00018A
BG73-00026A
BG59-00019A
BG61-00018A
BG30-00025A
BG41-00184A
BG97-01729A
BG66-00052A
BG61-00225A
BG61-20031A
AH60-10145A
AC60-10074A
6001-001348
6003-001260
BG69-00127A
BG73-00022A
BG61-00178A
3409-001138
BG63-00052A
BG41-00182A
LOADING
TRAY DISC
FEEDING
ETC
SPECFICATION
1.SCREW
1.ASSY LOADING
1.MAIN FRAME
2.GEAR TRAY
3.GEAR PULLEY
4.BELT PULLEY
5.ASSY LOADING M/T
- LOADING MOTOR
- PULLEY MOTOR
6.LEVER EJECT
7.SLIDE CAM
1.TRAY DISC
1.ASSY FEEDING
1.SUB CHASSIS
2.RUBBER-INSULATOR
3.RUBBER-INSULATOR
4.MAIN BASE M
- MAIN BASE P
5.ASSY STEP M/T
6.GUIDE PU
7.SHAFT PU R
8.MOTOR SPINDLE
FFC-SPM
9. ASSY TURN TABLE
TURN TABLE ABS
COVER T/T ABS
TURN TABLE BALL
RUBBER-T/T ABS
MAGNET
BRKT-T/T
10.PICK-UP
11.EFFC PU
12.ASSY SLIDER STEP
- SLIDE STEP
- SPRING STEP
13.HOLDER CAM
14.SCREW
15.SCREW
16.SCREW
17.SCREW
18.PAD-DECK
19.RUBBER-DVA
20.PLA-VIB/ABSORBER
-.SWITCH DETECTOR
-.SHEET PU
-.FFC MAIN
-.OIL
-.GREASE
-.GREASE
TITE M1.7*5(10)
HIPS(HG1760S)
POM(F20-03)
POM(F20-03)
CR-70(BLK 1.3t)
RF-300CH-11440 ¿Ü
POM(F20-03)
POM(F20-03)
KOCETAL(K700)
ABS ( SR-0320D )
ABS(GF20%)
BUTHYL 25Hs
BUTHYL 25Hs
SECC+POM
SECC 2.0T
“SPS-15RF-054K, P4.5mm”
POM(NW-02)
“SUS420J2,¥õ3.0,L85.5mm”
“RSM-2615A,DMBSPC75A”
15 PIN
ADC12
SN PLATE T0.6
“STEEL ¥Õ2.5,11EA”
CR(NEO-B-6150)
T1.5
SECC T1.0
SW-232B
“32 PIN (P0.5),88mm”
POM(NW-02)
SUS 304-WPB
POM(M90-44)
TITE M1.7*5(5.5)
TITE M2.6*6
M1.7*3.5
TITE M1.7*4.0*3.5
PORON LE-20 2T
SILICON 25µµ
SECC 2T
PVC FILM 0.85T
13 PIN
EP-100
KG-110
G-754
Disassembly and assembly
Exterior and PCB disassembly
Door-tray
1) Supply power to open the tray¶Êin direction of arrow “A”
2) Lift up the door¶Â in direction of arrow “B”
3) Close the tray¶Êand power off.
Reference : If the tray¶Êdoesn't open, push the clip3 into specified hole shown in detailed figure to open
it compulsorily.
Figure - Door-tray
Disassembly and assembly
Exterior and PCB disassembly
Panel-front
1) Remove 6 hooks¶Â
2) Take out the panel-front¶Êforward.
Figure - Panel-front
Disassembly and assembly
Exterior and PCB disassembly
Top-cabinet
1) Remove 4screws¶Â in the bottom
2) Lift up the top-cabinet ¶Ê
Figure - Top-cabinet
Disassembly and assembly
Exterior and PCB disassembly
Ass'y-frame Low
1) Lift up the ass’y frame¶Ê low
Figure - Ass'y-frame Low
Disassembly and assembly
Exterior and PCB disassembly
MAIN-PCB
1) Disassemble the PICK-UP FPC¶Â in PCB.
2) Disassemble the FFC¶Êbetween Main PCB and Front PCB.
3) Disassemble the FFC¶Ábetween Main PCB and Front PCB.
4) Push 2hooks¶Ëfor PCB fixing in deck.
5) Disassemble the MAIN-PCB¶È
6) Remove soldering at motor connection wire¶ÍPCB.
7) Press 2hooks¶Îfor PCB fixing in deck and Disassemble the FRONT-PCB
Figure - Disassembly connector
10
Disassembly and assembly
Deck disassembly
Tray
1) Push 2hooks¶Â.
2) Take out the Tray¶Êin direction of arrow.
Figure - Tray
11
Disassembly and assembly
Deck disassembly
Ass’y-Deck
1) Move the slide cam¶Â in left direction.
2) Remove screws¶Ê.
3) Disassemble the Ass’y-feeding ¶Áin arrow “B” direction with pushing the 2hooks in direction of arrow “A”
Figure - Ass’y-Deck
12
Packing Diagram and Part List
NO
CODE-NO
DESCRIPTION
SPECIFICATION
Q’TY
BG69-00146A
MASTER CATON-BOX
DM 3
1/8EA
BG69-00147A
PACKING-CASE SW-224B/DOM
SW-1 MANILA 240g
1EA
BG69-00034A
CUSHION-SET
EPS
2EA
BG69-30305A
BAG-PE
T0.05
2EA
BG46-00024A
S-W UTILITY
1EA
BG68-00352A
MANUAL USERS
1EA
ASS’Y
BG95-50004A
ASSY-SCREW
BG60-12001H
SCREW-MACHINE
1EA
M3 * 6
1EA
BG39-30002A
BAG-PE
10
BG39-00010A
CABLE-IF
SR 380MM
1EA
1EA
11
BG39-42001B
CABLE-WIRE HARNESS
4P, 3P, N, UL2547/UL 1061
4EA
12
BG69-30307A
BAG-PE
T0.05
1EA
13
0203-001222
TAPE-MASKING
PP-BEING
0.34M
14
BG68-00355A
LABEL-RATING
SW-224B/DOM, ART PAPER
1EA
15
BG68-50005A
LABEL-QMS
ART PAPER
1EA
16
BG68-00296C
LABEL-BAR CODE
DOM MODEL, ART PAPER
1/8EA
17
BG68-00327A
LABEL-BROKEN
ART PAPER
1EA
13
Block Diagram
14
Trouble Shooting
Check the power source and initial state.
Is electrity of 5V and 12V normally input
after the connecting the power cable ?
Check the connection of the
power short and cable.
If the power of RL3E804, RL5E935
is normal when you check,
replace X201, X301.
If the power of ICIC502 (3pin) is normal
when you check, replace IC502.
If the power of IC503 (2pin) 5V is normal
when you check, replace IC503.
Do RL3E804, RL5E935 oscillate ?
Dose the voltage of the 1pin of IC502
change from 3.3V ?
Is electricity of 2.5V normally
output from the 3pin of IC503?
When you transfer the PICK-UP
to the outer cycle, and turn the power on,
dose it move to the inner one?
Refer to ‘NO SLED operation’
TRAY IN / OUT ?
Refer to ‘Check TRAY IN / OUT’
LASER DIODE ON ?
Refer to ‘check LASER DIODE ON’
15
N
FOCUS UP / DOWN ?
Refer to ‘ FOCUS LOCK ’
FOCUS LOCK ?
Refer to ‘ NO DISC ROTATION ’
DISC rotation ?
SPINDLE LOCK ?
AUDIO OUTPUT ?
Refer to ‘ NO AUDIO OUTPUT ’
Refer to ‘ NO WRITING ’
WRITING Normall ?
16
No SLED OPERATION
When you transfer the pick-up to the outer
cycle and turn the power on, dose the
pick-up move to the inner one ?
SLED operation of normal.
The below waveform is outputted in
IC301 1, 99pin ?
If the constant of IC301 and GND, pattern’s
when you check, replace.
If the constant of IC401 and GND,
pattern’s when you check, replace.
The below waveform is outputted in
IC401 35, 37pin ?
Replace stepping Motor.
17
No Tray open / close operation
Is the connector properly
inserted into CN30 ?
Try the operation after inserting the
connector to CN3 properly.
Check the SW701 patterns and the
welding condition.Replace it if the
condition is normal.
Check the SW701 Open and Close
patterns and the welding condition.
Replace it if the condition is normal.
When pressing the EJECT SW,
does the peak value of the
IC301 3Pin become 3.3V?
When it is in the Tray Open mode,
does the IC301 6Pin show 1.65V?
OPEN
When pressing the EJECT SW, does the
IC401 Pin26 vary from 0V to the value
between1.15V and 2.15V and then show
1.65V finally?
Check the condition and patterns of
R409, R410.If they are normal,
replace IC401.
When pressing the EJECT SW,
does the IC401 Pin26 vary from 1.65V
to the value between 1.15V and 2.15V
and then show 0V finally?
Is the Tray Motor able to output the
Pin49 and 50 of IC401?
Replace TRAY MOTER.
18
CLOSE
No LASER DIODE ON
Is the connector inserted normally
into the CN10?
Try again after a normal insertion of the
connector into CN10.
Try again after replace of FPC Wire.
If the pattern of IC101 and sodering is
normal when you checked, replace IC301.
If the time transfer 71pin of IC101
and soldering are ok is when you checked
replace IC101
Isn’t there any problem
with the FPC Wire ?
When the SLED is moved to the
inner circle, is electricity of about 1.65V
output from the 80pin of IC101 ?
Is electricity of about 1.65V input
through 71pin of CN101 ?
Replace PICK -UP.
The value of voltage can be modified slightly, depending on the result of power calibration or the media.
19
No FOCUS LOCK
FOCUS UP / DOWN ?
Dose the S-curve below come out of the
76(TP:FE)pin of IC101after insertion of a disc ?
If the power of IC101 and GND, soldering
is normal when you check, replace IC101.
The below waveform(CH B) is
outputted in IC201 132pin ?
If the power of IC201 and GND, soldering
is normal when you check, replace IC401.
CH 2 : Focus Up / Down FE
CH 3 : S curve
CH 4 : Focus Servo On
Is the waveform above input
through the 128pin of IC201 ?
If the power of IC201 and GND, constant
is normal when you check, replace IC201.
The below waveform(CH B) is
outputted in ICIC401 45, 46pin ?
If the power of IC201 and GND, soldering
is normal when you check, replace IC201.
1. Try again after a normal insertion of the
connector into FPC Wire.
2. Try again after replace of FPC Wire.
1. Is the FPC Wire inserted normally
into the CN10?
2. Isn’t the FPC wire disconnected ?
Replace Pick-up.
20
No SPINDLE MOTOR ROTATION
Is the waveform below output
through 140pin of IC201 ?
If the power of IC201 and pattern’s,
soldering is normal when you check,
replace IC201.
Is the waveform above input
through 24pin of IC401 ?
If the power of IC401 and pattern’s,
soldering is normal when you check,
replace IC401.
Does output but spindle Motor rotate ?
Replace MOTOR.
21
No AUDIO OUTPUT
Replay of AUDIO after
insertion of AUDIO DISC ?
Is the audio output from the
164, 167pin of IC201 ?
If the power of IC401, GND, soldering is
normal when you check, replace IC200.
Check the connection of the CN30 is and
normal when you checked, replace VR701.
Is the audio output from the
11, 13pin of CN30 ?
Is the audio input from the JK701 ?
Replace FRONT PCB
Check the connection of the JK701 is and
normal when you checked, replace JK701.
22
No WRITING
Can WLT216B.EXE be
executed properly?
Replace P/UP or the entire MECHA.
Was the Power Calibration
executed properly?
When you try to write the records
again,does it work properly?
When writing the records,does the
voltage at the PIN 20 (XWGATE)
of CN10 decrease from 5V to 0V?
Check the condition of the
power at CN10,
GND and the welded part.
If they are normal, replace IC101.
23
Circuit Diagram
Main
24
Circuit Diagram
Front
25

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : No
Modify Date                     : 2002:07:30 17:16:39-03:00
Create Date                     : 2002:07:30 17:16:25-03:00
Title                           :  SW-248B_E-BG68-XXXXXA
Author                          : soo
Creator                         : +QuarkXPress3.3k: LaserWriter 8 KH-8.6
Producer                        : Acrobat Distiller 4.0 for Macintosh
Page Count                      : 26
Mod Date                        : 2002:07:30 17:16:39-03:00
Creation Date                   : 2002:07:30 17:16:25-03:00
Metadata Date                   : 2002:07:30 17:16:39-03:00

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