Sony CDU31A Series User manual

CD-ROM DRIVE UNIT
CDU31A-O 1
CDU31A-02
CDU-541-51
CDU-541-81
CDU31A-GW
CDU31A-L L
SONY:
SERVICE MANUAL

SECTION 4 PARTS REPLACEMENT ······························································································· 4-1
4-1
EASY REFERENCE CHART ·························································································· 4-1
4-2 BOTTOM PLATE REPLACEMENT ················································································· 4-2
4-3 FRONT PANEL ASS'Y REPLACEMENT
········································································· 4-2
4-4
.. MA-1/MA-2 MOUNTED BOARD REPLACEMENT ············································ ··············· 4-3
4-5 OPTICAL DEVICE REPLACEMENT ··································
··· ············· ··· ···· ···· ·················· 4-3
SECTION 5 CHECK AND ADJUSTMENT ························································································· 5-1
5-1
ELECTRICAL ADJUSTMENT ··········· ··· ········· ······ ·· ··· ···· ···· ····· ········· ································ 5-1
5-1-1 Special Tools and Measuring Equipment ·········································································· 5-1
5-1-2 Pre-Setting ·················· ··· · ··· ·········· ····· ················ ···· ························· ··· ······················· 5-1
5-1-3 EF Balance ····························································································•·················· 5-3
5-1-4 Focus Servo Loop Gain ··········································•················
·• ·············•···················· 5-4
5-1-5 Tracking Servo Loop Gain
··························································································· 5-5
5-1-6 Focus Bias ······
··· · ··· ··· ··· ········· ···· ······················ ··· ··········· ······ ······· ····· ···· ···· ················· 5-6
5-2 RF LEVEL (LASER POWER) AND LASER CURRENT
······················································ 5-7
5-2-1 Special Tools and Measuring Equipment
·········································································· 5-7
5-2-2 Measurement ·········
···· ··· ··· ·· ······ ··· ···· ····•··•···· ········· ··· ····· ······ ··············· ···•· ······ ········· ···· 5-7
5-3 OPTICAL DEVICE CLEANING ·
···· ·················· ·········· ··· ····· · ····· ··········· ······· ······ ···· ·· ······· ·· 5-8
5-3-1 Special Tools and Measuring Equipment ·········································································· 5-8
5-3-2 Cleaning with lens cleaner ·
···· ···· ···· ·· ······· ················· ··· ························· ········ ·········· ······· 5-8
SECTION 6 EXPLODED VIEWS AND LIST ····················································································· 6-1,..
6-1 MECHANICAL ASS'Y LOCATION ················································································· 6-1
6-1-1 Overall Ass'y ········•··································································································· 6-1
6-1-2 Packing Material ·····················•·················•·················································•·············· 6-5
6-2 DIAGRAMS
················•···········································.·······································•············· 6-6
6-3 PART LAYOUT AND CIRCUIT DIAGRAM
···································································· 6-8
6-3-1 Parts Layout on MA- I/MA-2 Mounted Board · ···· · ····· ···· ··· ······· ···· ··········· ···· ·· ······· · ······· ······· 6-8
6-3-2 Circuit Diagram on MA-I Mounted Board
····························•··················•·•············•···•····· 6-17
6-3-3 Circuit Diagram on MA-2 Mounted Board
·················•···············••················•···················· 6-25
6-4 ELECTRIC PARTS LIST
•····························•································································· 6-33
SECTION 7 SEMICONDUCTORS PIN ASSIGNMENT ········································································ 7-1
II

Note: Note on Repairing Optical Device (KSM-360ABM)
or Base Unit.
When opening or repairing the unit, grounding is required
to prevent damage caused
by static electricity and is as
follow:
I. G1"9unding for the human body
Be su.:C to wear a wrist-strap for grounding (with
impedance lower than
IO" Q) whose other end is
ground. The strap works to drain away static electricity
build-up on the human body.
x
Optical Device
4. Afterconnection to the MA-l/MA-2 Mounted Board,
to open the LO short land, remove the soldering
quickly with a soldering iron whose insulation
resistance
is larger than I0 M Q.
LD Short land
2. Grounding for the work table
Be sure to lay a conductive sheet (with impedance
lower than
Io• Q ) on the table, such as a sheet of
copper, which is ground.
3. As static electricity build-up on clothes is not drained
away,
be careful not to let yourclothes touch the unit.
(D Wrist.Strap
forgrounding
Conductive aheet
orcopper plate

SECTION 1
INTRODUCTION
1·1 CONFIGURATION OF SERVICE MANUAL
This manual is a maintenance guide for model CDU31A
series.
SECTION 2 describes disks and tools necessary for
maintenance.
SECTION 3 provides fault diagnostic procedures that may
require spare pans
or some adjustments.
The overall check after removal and adjustments will be
included
in this section.
SECTION 4 and 5 cover parts replacement and
adjustments, respectively.
SECTION 6 consist of circuit diagrams, ass'y drawings,
and parts lists.
1-2 CAUTION
Caution: As the laser beam used in this drive is harmful to
the eyes, do not attempt to disassemble the
cabinet. Refer servicing to qualified personnel
only.
Caution: This CD-ROM drive is classified as a CLASS I
LASER product. The CLASS I LASER
PRODUCT label
is located on the case.
1 ·3 PRECAUTIONS
1-3-1 Installation
a. Avoid placing the drive in a location subject to:
high humidity
high temperature
excessive dust
mechanical vibration
direct sunlight
b. This drive can be used horizontally only.
1-1
1-3-2 Operation
a. Do not move the drive while it is operating. Doing so
may cause a malfunction to occur.
b. Avoid exposing the drive to sudden changes in
temperature. This may cause condensation to collect
inside the drive. If
the ambient temperature should
suddenly rise while the drive
is turned on, wait at least
one hour before turning off the drive. Ifyou attempt to
operate the drive immediately after a sudden increase
in temperature, a malfunction may occur during
reading.
1-3-3 Transportation
a. Keep the original packing materials to facilitate
transporting the drive.
b. Always remove the disc before moving the drive.
After removing the drive
from the computer, repack
the drive into its original packing.
1-4 INTRODUCTION
a. CDU31A series is a drive unit for CD-ROM (Compact
Disc Read-Only Memory) discs, which store
as much
as 540 Mbytes of digital data.
b. The drive unit offers the following features:
-5.25 inch half-height drive form factor.
-Audio output to enable Audio CD playback.
-Audio channel selectable by software (stereo,
monaural, reverse, etc.)
-Fast access time providing high-speed read
operation.
-Real time layered error correction.
-Emergency eject function for manual disc
ejection.
-CD-ROM XA, CD Bridge disc and CD-I disc
play.
Software requirement:
-To read data reading of the data stored on a disc,
install the appropriate application software.
-To read data from CD-ROM discs with the High
Sierra Group (HSG) or IS0-9660 logical format,
you can use Sony OPA-474 series MS-DOS
CD-ROM Extensions. This software extends
MS-DOS*. It is designed for use on IBM
PC/ATs**
* MS-DOS
is registered trademark of Microsoft
Corporation.
** IBM PC, PC/ST, and PC/AT are registered trademarks
of International Business Machines Corporation.

1-2

SECTION 2
TOOLS AND MEASURING INSTRUMENTS
2·1 GENERAL AND SPECIAL TOOL LIST
The tools and measuring instruments for perfonning
maintenance on the CDU31 A series are listed below.
2-1-1 General Tools
©Driver 2.6mm
Tweezers
Round Nose Plier
Cutter
PC-DOS Disk
Soldering Iron (20W)
Desoldering Metal Braid (Solder Wick)
Tester (DRM)
Power Supply± 12V (min. 0.SA)
BNC-BNC Cable (I .Sm)
SONY Test Disc (YEDS-18)
SONY Parts No.
(7-700-749-03)
(7-700-7S3-02)
(7-700-7S7-0I)
(7-700-7S8-02)
(3-702-101-01)
This disc is used to adjust EF Balance.
2-1-2 Special Tools
IBM PS/2 System
PS/2 Model 30
or equivalent (640 k Byte RAM, 3.S"
FDD, Video RAM-CGA or Higher)
OPA-4741 System
CDB-334 Interface Card
Connection
SOP Cable
SOP Connector Ass'y
DC Power supply
Headphone (Stereo type/mini jack)
SONY Test Disc (YHDS-100)
SONY Test Disc (YHDS-SO)
Power Cord
ATP SLCD disk (0R-D900)
This Disk is used for Final Check.
BNC (one-end) Cable
SIA Attachment Tool
SLCD Test disk (0R-D901)
SRV SLCD Test disk (0R-D914)
Torque Driver two Bits
Fixture CDI
Line Out Relay Ass'y
Active Speaker
2-1-3 Measuring Equipment
(1-696-776-11)
(A-467S-38S-A)
(1-413-362-12)
(1-SS9-370-I
I)
(8-969-923-00)
(J-907-202-0A)
(J-907-S03-0A)
(8-969-923-01)
(8-969-923-14)
(J-623-807-0A)
(J-907-203-0A)
(A-467S-386-A)
Oscilloscope Dual Trace 20MHz (probe xlO)
Frequency Response Analyzer (recommend SOIOA (NF
Electronic Instruments))
DC Volt Meter (min. IOmA)
2-1-4 Expendable and Chemical Supplies
Cleaning Liquid Lens (J-2SO-IOO-OA)
Molykote Grease (EM-30L) (4-918-64S-OI)
Cotton swab (200 pieces) (7-740-900-6S)
2-1

2-2 SPECIAL TOOLS
2-2-1 S/A Attachment Tool
This tool is used to measure the open loop characteristics of
the Focusingffracking servo
of the CD-ROM drive without
cutting its servo
~ircuit.
(I) S/A Attachment Tool Configuration (Refer to Fig. 2-2
(a))
(2) S/A Attachment Tool Function
Terminals
8 FB IN ... This terminal is connected to the BNC
(one end) Cable which leads from the CD-ROM
drive. (FE3
or TE3 test lands)
• FB OUT; .. This terminal is connected to the BNC
Cable (application) which leads from CH-I
channel
of the analyzer.
8 ERR OUT... This terminal is connected to the
BNC Cable (application) which leads from CH-2
channel
of the analyzer or connected oscilloscope
probe.
8 ERR IN/DIS OUT... This terminal is connected to
the BNC (one end) Cable which leads from
CD-ROM drive. (FE2
or TE2 test lands)
8 DIS IN ...'This terminal is connected to the BNC
Cable (application) which leads from OSC
channel of the analyzer.
(i) +12V/ -12V/ GND... These terminals have a
supplied voltage of +12V/ -
12V from power
supply.
Switch
0 SI... This switch is to stan the test.
(3) S/A Attachment Tool Circuit Diagram (Refer to Fig.
2-2 (b))
Fig. 2-2 (a) SIA Attachment Tool Configuration
2-2

DISTURBANCE OllT
/ERR INPUT
to from FE3 or TE3
DISTURBANCE
ON/Qff
Fig. 2-2(b) SIA Attachment Tool
2-3
DISTURBANCE INPUT
from OSC of NF501 OAnalyzer
(or RC Oscillator)
+12V
.... ----1-----0 +12V
.r-F-::
12V

2-2-2 Fixture CDI
(I) Fixture CD! Configuration (Refer to Fig. 2-2 (c))
(2) Fixture CD! Function
Switch
8 SI ... This switch is used for adjustment.
Fixture CD1
Fig. 2-2(c) Fixture CD1 Configuration
2-4

2·3 PS/2 SYSTEM SETTING AND
CONFIGURATION a. Install the SONY CDB-334 interface card
in the PS/2
system.
2-3-1 Set up PS/2 System
Note: Make sure that the PC-DOS has been installed on
the hard disk.
2-3-2 System configuration
ATPSLCD Test Disk
(for
ATP)
SLCD Test Disk
(for Outgoing Test)
SRV SLCD Disk
(for Function Check/
Adjustment)
Headphone
~~
SONY Test Disc (YHDS-100) (for ATP)
SONY Test Disc (YHDS-50) (for Outgoing Test)
SONY Test Disc (YEDS-18) (forAdjustment)
Fig. 2-2 ATP/Function check/Outgoing Test/Adjustment System
2-5
Connection 50P Cable
(1-696-776-11)

2-6

SECTION 3
TROUBLESHOOTING
This section describes troubleshooting methods.
Section 3-2 shows the flowchan
of the processing routine
of the unit. Section 3-3 describes the ATP procedures.
Section 3-5 describes the outgoing test procedures. These
descriptions define the defective pans under operating
conditions.
3-1 BEFORE TROUBLESHOOTING
The following procedures are recommended to verify if the
drive
is really faulty or not:
a. Poor connection with the host system
(esp. GND-related connection, frame GND, etc.)
3-2 FLOWCHART FOR TROUBLESHOOTING
START
Fail
Pass
Fail
Pass
END
3-1
b. Incorrect operational procedure.
c. Program error of host system
d. No Interface Cable Terminator at the end of Data Bus.
e. Wrong Drive Number selection
f. Wrong supply voltage
g. Environmental conditions (where electrical noise
easily jumps into signal)
h. Influence of strong magnetic field
Drive Function Check
(Refer to 3-4)
Part Replacement
(Refer to Section 4)
Adjustment
(Refer to
5-1 )

3.3 PROCEDURE OF ATP TEST
3-3-1 Pre-setting
a. Connect the test drive to the ATP System. (Refer to
Fig. 2-2-2)
b. Tum on the power of the Computer.
Note: Make sure PC-DOS had been installed in the hard
disk of the computer.
(ATP_SLCD)
Ver X.XX xxxx xxxx xxxx
0 Disc Insert
1 Diagnostic
2
TOC Read Test
3
Spin Down Test
4
Spin Up Test
5-1
Full Seek Test ( /20)
5-2 1
/3 Seek Test (
/20)
6 DMA
Read Test
7-1
Disable Eject SW
7-2 Audio Test 1
7-3 Audio Test 2
(DI Ej.)
7-4 Audio Test 3 (DI Ej.)
8 Drawer
Open (El Ej.)
IO_BASE ADDRESS: 360
CIRO : 2 DRO : 3 Not Used.)
EXE_MODE : AUTO
Eject Timeout : 20000 ms
Timer : DOS TIMER
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
-->
Hit any key to continue, Esc to abort.
SONY
c. After system loading, insen ATP SLCD DISK into
drive
A.
d. Change directory in drive A.
e. Type ~IT]~Q~[Qlf]!QI and !Enter! key. (After test
program loading, Display
3-3-1 (a) shows up.)
CD-ROM CDU31 A
Rev x.xh
judgement
Display3-3-1(a)
3-2

3-3-2 Test Procedure
Test item Check point
To execute ATP test
of the drive.
I. Tum on the power supply.
2. Insert SONY Test Disc (YHDS-100) into the test
drive.
Note: When
an error occurs during testing, all of the test
items are cancelled and
an error message will be
displayed in the message column.
Note: If each test result meets the specification, the
message "Pass"
or the value of the test result will be
displayed in the judgement column.
a. Disc Insert test will be executed.
b.
Diagnostic test will be executed.
c.
TOC Read test will be executed.
d.
Spin Down test will be executed.
e. Spin Up test will be executed.
f.
Seek test will be executed.
g.
OMA Read test will be skipped.
3. "Hit any key when ready." message will
be displayed
in the message column.
a. Audio test I will be executed.
b. Audio test 2 (DI Ej.) will be executed by pushing
the eject button.
c. Audio test 3 (DI Ej.) will be executed by pushing
the eject button.
d. Drawer Open (El Ej.) will be executed by pushing
the eject button.
The ATP test ends.
Note: If all
of the test items are completed, the "OK"
message will be displayed on the screen. If not,
"NG" will be displayed.
!ATP SLCO)_ Vff X.XX ••Sein DrlYI (s) .• LEC NO ••••• V K <12141992)
0
'
2
~Sl•C
TOC Read l esr
Sotn Down
Tes1
5ooii I.Jo Test
0r1~, SONY co~ CDU3tA ~ x.xx
> P•ss
- - > Pass (Busl Pass CROM "RAM) Pass OOP,,. 47mAJ
- · > Pns O
... (I 320ms) Pass
- - > (1700ms: Pass 0
3
•
b'
52
6
71
72
73
,.
ru11 5eeli Test
1. 3 5"lo. lest
OMA And Test
1 20 20; _. t..t.•.l 940msJ Ave.' 799ms1 Pau O
C 20 "20) - ·· c- Ma• ( 610rns) Ave.( 482ms) Pns O
B
0.Hblt EJtet SW
Audio Test I (£Volume)
ArJdoo THI 2 (pt t..4od9o L)
"'°° Test 3 CPl Mode R)
Or9w.r ()opn m £1)
tO RASE ADOR£SS 360
Tes! Onve 0
EXE t.a>F AUTO
Aittry.'Rnd: 3
Hit anv kev 10 cominue. Esc to lbort
- - >
-·
>
-->
-->
- >
'
SI<••
....
....
Pass
•n•
0 K
0
0
0
3-3
The sound diminishes slowly. (After several minutes, the
drive
is set to mute mode.)
The sound (both left and right side) can
be heard from the
headphone.
SONY Test Disc (YHDS-100) is ejected automatically.
CATP _SLCO} V• X XX • • Seen Orrve (sl / l EC NO • • • • • Y K. (1214 19921
0
Dose'"'""
'
o..onost•C
2
TOC Aud Test
3 5oiri Down Test
•
Son Uo Test
5'
ful 5"li. Test ( ,·20;
52
L-•3 Seel: Test (
/20)
6 OMA RNd Test
7'
Oluble EJtCt SW
72
Audio Tnt
'
CE Volume'
73
Audio Test 2 CPlMode
L)
7-4 Audio
Tut 3 {Pl·Mode A)
B
er-°"""
(El E1)
tO _BASE ADDRESS 360
Test On,,.· 0
EXE .. MOOE : AUTO
JWtrv.;ANd 3
-->
-->
- - >
. - >
- - >
-->
-->
- - >
-->
-->
-->
-->
-->
Or1Y80 : SONY CORJM CDl.131 A Rev X.XX
-
....
Pus (Bus) Piss (A:IM /RAM} Pass CtOP '"' 47mA)
Pus 0
CI 32Qms} Pass
(4940ms) Pass 0
(20 : 30) Focus Error I
NG
Hit~ key to coP'ltinue. Esc to 8bort &.tus: 1 Flf0 .. 7 Rrni.it:BO

3-3-3 Edit Test Condition
Note: Any editor can
be used to edit any of the test conditions of the ATP SLCD. In this manual, the EDLIN editor is used to
edit test conditions.
I. Type ~@]ffiffi[!i:JO~[][BQ~[Qlf][Q]O~IYJ~ and hit !Enter! key. (Display 3-3-3 (a) shows up)
2. Type [Qand IEnted key. (Display 3-3-3 (b) (Specification list (S list)) shows up.)
End of input file
* Display3-3-3{a)
1: ExeMode AUTO
2: diag on
3: Audio Test on
4:
5: VO Base Address (hex) 360
6: *IRQ channel 2
7: DRO channel = 3
8:
9: SDwn /31A: 500
10: SUp /31A: 3000
11 ~
12: Full 20
13: Fmax /31A: 1500
14: 1/3 20
15: Tave /31A: 850
16:
17: ASeek 31 A: 650
18:
19: EjTimeOut 20000
20: EJTm /31A: 1500
21:
22:
; AUTO or STEP
; diagnostics on or off
; base address (default : 360)
;
IRO channel (default: 2)
;
DRO, DACK channel (default : 3)
; 500
ms
; 3000 ms = 3.0 sec
Count of full stroke (default : 20)
Count
of 1 /3 stroke (default: 20)
Max 32000 ! Eject pressing Time-out (ms)
Display3-3-3 (b)
3. To edit any test conditions.
a.
To change address of 1/0 port. (default setting= 360)
ex. If it is 340 : (This address is set by dip switch. (Refer to Instruction Manual))
a-1. Hit~ key in S list and hit !Enter! key.
The following will be displayed on the bottom
of the screen.
5: *VO Base Address (hex) = 360
5:*
a-2. Type 1/0 pon address as below and hit IEnted key.
5: *VO Base Address (hex) = 340
b. Other items are not necessary to change the specification.
3-4
; base address (default : 360)
;
base address (default: 360)

4. To quit.
a. To save the new parameter
a-1. Hit[§ and \Enter\ key.
b. To keep the original parameter
b-L Hit IQ] and \Enter! key.
The following will be displayed on the bottom
of the screen.
abort edit (Y /N) ?
b-2. Ifabort, hit[) key.
The following will
be displayed on the bottom of the screen.
: ">
Ifnot, hit~key.
The following will be displayed on the bottom of the screen.
*
3-5

3-4 DRIVE FUNCTION CHECK
3-4-1 Pre-Setting
d. After system loading. insert SRV _SLCD Test Disk
into the drive A.
a. Disassemble the following parts before testing.
e. Change directory in the A drive.
Bottom Plate Ass'y (Refer to 4-2)
b. Connect the test drive to the ATP System. (Refer to
Fig. 2-2.)
f. Type ~[ffi[2]0~[QIQ[Q] and IEnterl key to start the
function check. (Main menu will be displayed.)
c. Tum on the power of the Computer.
Note:Make sure PC-DOS
has been installed in the hard
disk
of the computer.
l Esc l
SRV _SLCD Alpha.X.XX * [I. K. September-01-1992) Alt-Z
RESET DRIVE
L Abort
fesrF~o~
F3
Set Auto
SpinUp
F5
DIAG
Bus Check
F9
Play Audio
F2
AUDIO TEST
F4
Reset Auto
Eject
F6
DIAG
Memory Check
INQUIRY
rF10 l
r-; AA-X ;i
~_10: 36:'
Auto Spin Up : OFF / Auto Eject : ON
L-+ L R-+ R L [ O.OdB] R [ 0.0dB]
Close but No Disc / TOC : NO LED : OFF
[ATN : 80) Loading Mechanism is Loaded !
Item/Procedure
I. Poweron
a. Tum on the power.
2. Tray open
a. Push the eject button when the
"Reset Auto Eject." message is
displayed. ·
3. Bus check
a. Hit ~ (DIAG Bus Check) key.
(Refer to Display 3-4-2)
b. Hit ~ key to return to Main
Menu.
4. Memo~heck
a. Hit B!I (DIAG Memory Check)
key.
dRe~er to Display 3-4-3)
b. Hit nte key to return to Main
Menu.
Display3-4-1
Specification (Normal Status) Check point
I. The spindle motor docs not rotate. QI04, QIOS.
(VS test land is OV.)
2. Green LED on the front panel lights Q201, IC201-14.
up. (XBUSY test land is High
level.)
I. Tray is opened automatically. IC201-8, Q203, voltage of +12V.
(OPEN test land is High level and
also SLNID
is 8 to IOV.)
I. "Bus Check OK." message appears CN202, CN203, IC212, IC213,
on the screen. IC202, IC215, IC209, IC210.
I. "Program ROM OK.", "Work RAM IC212, IC213
OK." and "Data Buffer RAM OK."
message appears on the screen.
3-6

IE.cl
SRV _SLCD Alpha-X-XX * [L K_ September-01-1992] Alt-Z
RESET DRIVE
-- Abort --
Fl ~
I !EST Mo:_
F3
Set Auto
Spin Up
F5
DIAG
Bus Check
0
~2
~
t
e
~
G
0
DIAG (Bus Check)
Data sent : FF
Data returnned : 00
Bus Check OK.
Hit any key when ready.
rFlO l
:QURIY
[ATN : 80] Loading Mechanism is Loaded !
I "° l
Abort
Fl~
[TEST MODE
F3
Set Auto
SpinUp
F5
DIAG
Bus Check
Display3-4-2
SRV _SLCD Ver. X. XX
F2
AUDIO TEST
IF41
Lrr=== DIAG (Memory Check)==::::::i
~
Checking memory.
Wait for about
20 sec. until
the drive reports the result !
[ F7 l ____ [ ____.
F9
Play Audio
rFlOl
:QURIY
[ATN: 80) Loading Mechanism is Loaded!
Display3-4-3
3-7
r-; Ah-X ~
ELIO: 36:>
Auto Spin Up : OFF / Auto Eject : ON
L -+ L R-+ R L [ O.OdB] R [ 0.0dB]
Close but No Disc / TOC : NO LED : OFF
I. K. [May-10-1993] --- Alt-Z
RESET DRIVE
Auto Spin Up : OFF / Auto Eject : ON
L-+ L R-+ R L [ O.OdB] R [ 0.0dBJ
Close but No Disc / TOC : NO LED : OFF

Item/Procedure
5. Spin up
Note: Set the SI switch of Fixture
CD I
to on.
a. Hit IEJI' (Set Auto SpinUp) key
to set the "auto spin up" mode.
Note: The message changes from
"Set Auto Spin Up" to "Reset
Auto Spin Up".
b. Hit EU (TEST MODE) key.
(Display 3-4-4 shows up)
c. Hit EU (Spin Up) key to start
spinning
up, then "Wait a while
during spinning up." message
will
be displayed. After
completion, the message will
change to ·"Wait a while
recovering TOC."
d. Hit ~ key to return to Main
Menu.
~I =.1
I ~~·Up I I
F2 l
I TR:3CH I I
TR~
4
0N I
I +
~5TJ I
1-~TJl
I +:ITJ I
1-::TJl
,....--- F9 ---,
I' F10 l
Play Audio
-Play TNo __
[ATN : 80) Loading Mechanism is Loaded !
Specification (Nonna! Status)
I. Blinking Time Corder.
2. Amber LED lights during read
operation.
Check point
RF level is mis-adjusted. (Refer
to 5-2)
lens is durty. (check IOP (Refer
to 5-3))
Check tracking error operation.
(Fig. 3-4 (a) can
be obtain at TE
test land after TOC reading.)
D204.
Fig. 3-4 (a)
TEST MODE
---------- ,....--- Alt-Z - -
RESET DRIVE
YEDS-18 is recommend for TEST Mode.
Display3-4-4
3-8

Item/Procedure
6. Audio play
a. Hit ~ (Audio TEST) key.
(Display 3-4-5 shows up)
b. Hit~ (Play Audio) key to start
audio play.
I Esc l
I _Abort
Fl
Disable
Eject
SW
F3
PLAY MODE OC
L+R-+ L
F5
PLAY MODE OA
L -+ L&R
F7
PLAY MODE OF
L+R -+ L&R
F9
Play Audio
rvo'CuMEJ
F4
PLAY MODE D3
L+R -+ R
F6
PLAY t.«>DE 06
R __. L&R
F8
« Reverse »
Play TNO
I' FlO ~
[A TN : 80] Loading Mechanism is Loaded !
Specification (Normal Status)
1. The both left/right of speakers
and the both left/right of
headphone are sounding during
audio play mode. (MUTE test
land
is low level.)
AUDIO TEST
Check point
When the both of headphone and
speakers are not sound, check
IC201-9, IC211-8, ICI03-88,
IC302, IC301.
Only when the speakers are not
sound, check L301, L302.
Only when the headphone are
not sound, check
0305, IC305.
When the left side are not sound,
check IC304, IC302, IC303.
When the right side are not
sound, check IC306, IC302,
IC303.
Alt-Z
RESET DRIVE
Auto Spin Up : OFF / Auto Eject : ON
L -+ L R-+ R L [ O.OdB] R [ 0.0dB]
Close but No Disc / TOC : NO LED : OFF
Display3-4-5
3-9