This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-003-342-6T1).
SPECIFICATIONS
BASIC CD MECHANISM : DA23L
Design and specifications are subject to change without
•
.
notice
S/M Code No. 09-003-342-6R1
REVISION
DATA
Page 2
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs laser. Therefore, be sure to follow carefully the
instructions below when servicing.
WARNING!
WHEN SERVICING, DO NOT APPROACH THE LASER EXIT
WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO
CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE
FROM A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL
PICK-UP BLOCK.
Caution: Invisible laser radiation when
open and interlocks defeated avoid exposure to beam.
Advarsel:Usynling laserståling ved åbning,
når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
VARNING!
Om apparaten används på annat sätt än vad som specificeras i
denna bruksanvising, kan användaren utsättas för osynling
laserstrålning, som överskrider gränsen för laserklass 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
ATTENTION
L'utilisation de commandes, réglages ou procédures autres que
ceux spécifiés peut entraîner une dangereuse exposition aux
radiations.
ADVARSEL!
Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude
af funktion. Undgå udsættelse for stråling.
This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located on the rear
exterior.
CLASS 1
KLASSE 1
LUOKAN 1
KLASS 1
LASER PRODUCT
LASER PRODUKT
LASER LAITE
LASER APPARAT
Precaution to replace Optical block
(SF-P200)
Body or clothes electrostatic potential could ruin
laser diode in the optical block. Be sure ground
body and workbench, and use care the clothes
do not touch the diode.
1) After the connection, remove solder shown in
the right figure.
C703 87-010-854-080 C-CAP,S 560PCH
C706 87-012-368-080 C-CAP,S 0.1-50 F
C707 87-A10-826-080 C-CAP,S 1-10 K B
C708 87-A10-826-080 C-CAP,S 1-10 K B
C709 87-A10-826-080 C-CAP,S 1-10 K B
The servo circuit of this model is designed to be adjustment-free and the adjustment value and disc distinction (CD-DA, CD-R and CDRW) etc. is adjusted by the IC. Therefore the adjustment is performed at each TOC reading. The adjustment conditions in the IC of each
servo can be monitored in this test mode.
1. How To Start The Mode
Starting method of the test mode differ depending upon the type of disc being used. This is because the adjustment values of each
servo also differ depending upon the type of disc.
When using the CD-DA or CD-R
1) Short-circuit TEST LAND and OPEN/CLOSE SW land.
2) Insert the AC plug to the power outlet and install the CD-DA or CD-R disc.
3) Press the PLAY and STOP buttons in this sequence and read the TOC.
IC701
IC401
IC451
IC502
20
7
IC601
IC501
RF
FE
When using the CD-RW
1) Short-circuit the TEST LAND and OPEN/CLOSE SW land.
2) Insert the AC plug to the power outlet and install the CD-RW disc.
3) Press the PLAY, STOP and DSL buttons in this sequence and read the TOC. The LCD should display “CD-r” at this point.
Note 1: If the TOC cannot be read, “ERR” has appeared on the LCD. The following step 2 and 3 can be verified even if the “TOC”
cannot be read.
Note 2: By repeatedly pressing the DISPLAY/ENTER button all the LCDs light up and the “TOC” display is repeated.
Note 3: By repeatedly pressing the DSL button the LCD “CD-r” and “CD-d” are repeated.
When the LCD displays “CD-d” ™CD-DA, CD-R is selected.
When the LCD displays “CD-r” ™CD-RW is selected.
Note 4: The test mode is canceled by disconnecting the AC plug and remove the soldering of short land.
2. DISC distinction (confirmation of the FE waveform)
This mode enables you to perform a confirmation of the disc distinction.
Confirmation method
Press the DSL button and select “CD-d” or “CD-r” (Refer to Note 3).
1) Install the disc.
2) Press the MODE button.
The LCD will change as follows:
Example: Test disc: TCD-782, DISC type select: CD-d Judgment value: 68, Measurement value: 37 CF
61
TEST MODE SHORT LAND
IC301
68
Judgment value
* All numerical values are displayed in HEX.
What disc the IC has selected can be understood according to the judgment value.
The decision standard of IC is as follows.
0 < Judgment value< 10
10 < Judgment value < 32
32 < Judgment value < C8
C8 < Judgment value
The state of the FE waveform can be also understood from this judgment.
37CF
Measurement value
LCD displays “CD-d”
No disc
CD-RW
CD-DA and CD-R
LCD displays “CD-r”
No disc
No disc
CD-RW
CD-DA and CD-R
1413
Page 11
3. Confirmation of Sled movement
By pressing the F.SKIP or B.SKIP button continuously during the TEST MODE, it is possible to transfer the pick-up to either the outer
side or inner side.
4. Confirmation of the RF level
Test point: RF and VC (Vref)
Test disc: TCD-782
Confirm that the RF waveform is as shown below.
0.8Vp-p or more
VOLT/DIV: 200mV
TIME/DIV: 0.5us
5. Confirmation of Tracking balance
Test point: TE and VC (Vref)
Test disc: TCD-782
Press the DSL button while playing the test disc and confirm the TE waveform is as shown below.
A
VC
A:B=1:1
B
VOLT/DIV: 200mV
TIME/DIV: 2ms
6. Confirmation of each servo
It is possible to confirm the adjustment value of each servo by repeatedly pressing the MODE button while the disc is playing.
The switchover sequence is as stated below.
Confirmation mode off ™ Focus Bias (FB) ™ Tracking Balance (TB) ™ Tracking Gain (TG) ™ Tracking Error Offset (TEO) ™
Focus Gain (FG) ™ Focus Error Offset (FEO) ™ Confirmation mode off
Power supply for DRAM interface. (pin No. 2 to 19).
2
3
4
5
6
7
8
9
10-16
17-19
20
21
22
23
24
25
D0
D1
NWE
NRAS
D2
D3
NCAS0
NCAS1
A8-A0
A1-A3
DVSS2
DVDD2
SPOUT
TRVM
TRVP
TRM
I/O
I/O
O
O
I/O
I/O
O
O
O
O
O
O
O
O
DRAM data input/output signal 0.
DRAM data input/output signal 1.
DRAM write enable signal.
DRAM RAS control signal.
DRAM data input/output signal 2.
DRAM data input/output signal 3.
DRAM CAS control signal 0.
DRAM CAS control signal 1. (when both 1 M and 4 MDRAM are used).
DRAM address signal 10. (when 16 MDRAM is used).
DRAM address signal 8-0.
DRAM address signal 1-3.
I
Ground for digital circuit.
I
Power supply for digital circuit.
Spindle motor drive signal output. (absolute value output).
Traverse drive output. (positive polarity output).
Traverse drive output. (negative polarity output).