This service manuai is intended for quaiified service technicians ; It is not meant for the casual do-ityourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safety repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty, if you are not qualified to perform the repair of this product properly and safety, you
should not risk trying to do so and refer the repair to a quaiified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may
cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When serving or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with the
solder. Also, when soldering do not inhale any smoke or fumes produced.
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols -it—H- (fast operating fuse) and/or
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible
de remplacement doivent avoir la même désignation.
(fusible de type rapide) et/ou Hi~~lxl (fusible de type lent) sur CCI indiquent que les pièces
■ M (slow operating fuse) on PCB indicate that replacement parts must
r(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A
PO-TENTIAL SHOCK HAZARD AND MUST BE COR
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appli
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be
ob-tained by using replacement components rated for
vol-tage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in
this Service Manual.
Electrical components having such features are
identified by marking with a Aon the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in
the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product Safety is continuously under review and
new instructions are issued from time to time. For
the latest information, always consult the current
PIONEER Service Manual. A subscription to, or
ad-ditional copies of, PIONEER Service Manual may
be obtained at a nominal charge from PIONEER.
Page 3
2. EXPLODED VIEWS AND PARTS LIST
NOTES: • Parts marked by ”NSP" are generally unavailable because they are not in our Master Spare Parts List
• The /1^ mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
• Screws adjacent to ▼ mark on the product are used for disassembly.
2.1 PACKING
Parts List
No. DescriptionPart No.
Mark
Cord with Plug
1
Operating Instructions (English)
2
3 CD-R Disc Caution Card
Wireless Remote Control Unit
4
(CU-PD083)
Battery CoverAZA7123
NSP6
5
Battery (R6P,AA)
Polyethylene BagZ21-038
7
8 Mirror Mat
9 Styrol Protector F
PDR-04
PDE1248
PRB1251
PRM1046
PWW1116
VEM-013
Z23-007
PHA1243
NSP
10 Styrol Protector R
Packing Case
11
12
13 Warraty Card
PHA1245
PHG2223
ARY1044
Page 4
PDR-04
2.2 EXTERIOR
Page 5
PDR-04
Page 6
PDR-04
Parts List
Mark No. Description
NSP
NSP2
NSP
NSP4
NSP
A
A
A
A
A
NSP
NSP21
NSP
NSP
NSP31
NSP32
STRATEGY SMALL BOARD ASSY
1
SERVO UCOM BOARD ASSY
3 AUDIO DIGITAL BOARD ASSY PWZ3388
ALC BOARD ASSYPWZ3389
5
HEADPHONE BOARD ASSY
e
O
7 FUNCTION BOARD ASSYPWZ3042
8 POWER A BOARD ASSY
9
POWER B BOARD ASSY
Strain Relief
10
39P F.F.C/30V
11
Connector Assy (5P)PF05PP-D37
12
AC Power Cord
13
Ferrite Core
14
Power Transformer
15
(Servo, AC120V)
Power Transformer
16
(Audio, AC120V)
17 Fuse(FU11,1A)
18 Screw
19 Cord Clamper
20 Cushion (3.5)
Spacer A
Rubber Spacer A
22
23
Rubber Spacer B
24 Under Base
25 Audio Angle
26 Rear Base
27 Earth Plate
28 Insulator
29 PCB Holder
30
PCB Holder
PCB Spacer
Loading Mechanism Assy TT
Headphone KnobPAC1600
33
Operation Button 78
34
35 REC Button
Part No.
PWX1518
PWZ3387
PWZ3390
PWZ3354
PWZ3359
CM-22C
PDD1181
PDG1015
PTH1018
PTT1308
PTT1309
REK1075
ABA1207
RNH-184
PEB1110
PEB1228
PEB1280
PEB1281
PNA2195
PNA2197
PNA2314
PBK1090
PNW1912
PNW2100
PNW2562
PNY-404
PXA1568
PAC1744
PAC1804
Mark No. Description
36
Power Button
Cord Clamper
NSP
37
38
Display Window
39
FL Sheet
40
Front Panel
41 Tray Panel
42 Display Panel 7
43
LED Lens
44 REC Ring
45 REC Lens
46
Holder
Tray Holder
47
48 Control Panel
49 Name Plate
50
65 Label
51
Indicator Lens
52
53
Bonnet
54 Screw
55
Ferrite Core
56 Screw
Screw
57
58 Screw
59
Screw
60 Screw
61 Rivet
Black Label
62
63 Screw
64 Disc Guard
65
Shield Sheet
66 1C
67 Earth Lead Unit
68 Binder Holder
Part No.
PAG 1805
DNF1128
PAM 1668
PAM 1673
PAN1349
PNW2701
PNW2662
PNW2019
PNW2558
PNW2559
PNW2591
PNW2592
PNW2703
VAM1032
ORW1069
PEA1206
PYY1175
BBT30P080FCC
PTH 1009
BBZ30P080FCC
IBZ30P060FCC
IBZ30P080FCC
IBZ30P150FCC
PPZ30P150FMC
RBM-003
PRW1470
FBT40P080FZK
PNM1245
PNM1308
PYY1196
PDF1154
PNW1021
Page 7
2.3 LOADING MECHANISM ASSY TT
PDR-04
13
Page 8
PDR-04
Page 9
Parts List
Mark No. Description
1 Lever Switch (Si 01)
2 Float Screw
3 Rubber Belt
4 Motor Pulley
5 Drive Gear
6 Timing Lever
7 Gear Pulley
8 SWHead
9 Float Base
10 Left Cam
11 Right Cam
12 Float Spring
13 Lock Spring
14 Float Rubber
15 Table Rubber Sheet
If a compact disc recorder is adjusted incorrectly or inadequately, it may malfunction or not work at all even though there
is nothing at all wrong with the pickup or the circuitry. Adjust correctly following the adjustment procedure.
(1 ) Use a 10 : 1 probe for the oscilloscope.
(2) All the knob positions (settings) for the oscilloscope In the adjustment procedures are for when a 10 :1 probe is used.
• Test Mode
This model has a test mode so that the adjustments and checks required for service can be carried out easily.
When this model is in test mode, the keys on the front panel work differently from normal. Adjustments and checks can be
carried out by operating these keys with the correct procedure. For this model, all adjustments are carried out in test
mode.
[ Setting to Test Mode ]
Howto set this model into test mode.
(1 ) Unplug the power cord from the AC socket.
(2) Short the test mode short land. (See Fig. 1.)
(3) Plug the power cord back into the AC socket.
When the test mode is set correctly, the display is different from what it usually is when the power is turned on. (lights up
all FL display) If the display is still the same as usual, test mode has not been set correctly, so repeat Steps 1 - 3.
[ Release from Test Mode ]
Here is the procedure for releasing the test mode.
(1 ) Press the STOP key and stop all operations.
(2) Unplug the power cord from the AC socket.
[ Operations of the Keys in Test Mode ]
Code
►PLAYSpindle servo ON
Key Name
DIGITAL
SYNCHRO
FINALIZE
Function In Test Mode
Playback laser diode ONLights up the laser diode by playback power.
The laser diode is lit up and the focus acutuator Is lowered,
then raised slowly and the focus servo is closed at the point
where the objective lens is focused on the disc.
With the player in this state, if you lightly rotate the stopped
Focus servo closes
disc by hand, you can here the sound the focus servo. If you
can hear this sound, the focus servo is operating correctly.
If you press this key with no disc mounted, the laser diode
lights up, the focus acutuator is pulled down, then the
acutuator is raised and lowered three times and returned to
its original position.
Starts the spindle motor in the clockwise direction and when
the disc rotation reaches the prescribed speed (about 500
rpm at the inner periphery), sets the spindle servo in a
closed loop.
Explanation
48
Page 49
PDR-04
CodeKey NameFunction In Test Mode
II
◄◄
•
►►
•
►►1
■
▲
0
1
o
PAUSE
MANUAL/
TRACK
SEARCH REV
MANUAL/
TRACK
SEARCH FWD
STOPStop
OPEN/CLOSE
REC
i
REC MUTE
DISPLAY OFF
WRITE
Tracking sen/o
close/open
Carriage reverse
(inwards)
Carriage forward
(outwards)
Disc tray open/close
Maximum recording
power
Laser diode ON
Focus offset switching
Optical axis servo
switching
Explanation
Pressing this key when the focus servo and spindie servo
are operating correctly in closed loops puts the tracking
servo into a closed loop, displays the track number being
played back and the elapsed time on the front panel.
If the elapsed time is not displayed or not counted correctly,
it may be that something is our of adjustment, or that there is
some other problem.
This key is a toggle key and open/close the tracking servo
alternately. This key has no effect if no disc is mounted.
Moves the pickup position toward the inner diameter of the
disc. When this key is pressed with the tracking servo in a
closed loop, the tracking servo automatically goes into an
open loop.
Since the motor does not automatically stop at the
mechanical end point in test mode, be careful with this
operation.
Moves the pickup position toward the outer diameter of the
disc. When this key is pressed with the tracking servo in a
closed loop, the tracking servo automatically goes into an
open loop.
Since the motor does not automatically stop at the
mechanical end point in test mode, be careful with this
operation.
initializes and the disc rotation stops.
The pickup and disc remain where they are when this key is
pressed.
Open/close the disc tray. This key is a toggle key and
open/close tray alternately.
Pressing this key when the disc is turning stops the disc,
then opens the tray.
This key operation does not affect the position of the pickup.
Lights up the laser diode with maximum recording power and
normal EFM by pressing REC and REC MUTE keys in order.
* The laser diode may be damaged if adjustments are made
before pressing these keys.
Switches the focus offset state.
DISPLAY OFF LED Lights UP : C/N in the best condition
Lights OFF : Jitter in the best condition
Switches the ON/OFF of the optical axis servo.
(MANUAL) LED Lights UP ; Optical axis servo ON
Lights OFF ; Optical axis servo OFF
[ How to Play Back a Disc in Test Mode ]
In test mode, since the servos operate independently, playing back a disc requires that you operate the keys in the correct
order to close the servos.
Here is the key operation sequence for playing back a disc in test mode.
FINALIZE I
PLAY
PAUSE II
Wait at least 2-3 seconds between each of these operations.
Lights up the laser diode and closes the focus servo.
Starts the spindle motor and closes the spindle servo.
Closes the tracking servo.
49
Page 50
PDR-04
6.2 Adjustment 1
6.2.1 Playback Power Adjustment
• Objective
• Symptom when out
To optimize the playback power of the laser diode.
Play does not start, track search is impossible, track are skipped.
Adjustment 1
of adjustment
• Measurement instru
ment connections
Connect the multimeter to
CN104 (TP1), Pin7(PWAJT)
► Player state
»Adjustment
location
»Disc
Test mode.
Playback laser diode ON
VR103 (PB. PW)
(HEAD BOARD assy)
None needed
[ Procedure ]
When adjusting with the multimeter.
(1) Lights up the playback laser diode using the DIGITAL SYNCHRO key.
(2) Adjust the voltage value of Pin 7 (PWAJT) of CN104 (TP1) to the voltage value (PB PW voltage ± 5mV) displayed on the
pickup flexible cable using VR103 (PB PW).
Note) This adjustment cannot be performed accurately If disc Is set. Be sure to remove disc first before adjustments.
Reference: When adjusting with the optical power meter.
(1) Move the pickup to the outer edge of the disc with the MANUAL / TRACK SEARCH FWD ►► key.
(2) Lights up the playback laser diode by DIGITAL SYNCHRO key.
(3) Shine the light discharged from the objective lens in the pickup on the light power meter sensor. Adjust VR103 (PB. PW)
so that the playback laser diode output is an average 0.6 mW ± O.OSmW.
(Wavelength 790nm, Average mode)
Recording on the disc is not possible In test mode.
50
P: Playback power
R: Recording power
Page 51
PDR-04
6.2.2 Coarse Focus Offset Adjustment
' Objective
Symptom when out
To coarse adjust the DC offset voltage of the focus servo circuit for perform the tracking and
slider adjustments correctly.
The model does not focus in, sound broken and the RF signal is dirty.
of adjustment
> Measurement instru
ment connections
Connect the oscilloscope to
CN204(TP201), Pin 1 (RF)
(SERVO UCOM BOARD assy)
[ Settings ] 20 mV/div.
2 mS/div.
DC mode
Player state
• Adjustment
location
• Disc
Test mode,focus and spindle servos
closed and tracking servo open.
VRIOS(FE.OFS)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(2) Adjust VR105 (FE. OFS) so that the amplitude of waveform at CN204 (TP201), Pin 1 (RF) is maximum.
>■.% V>SSSiS v>s
Adjustment 1
Out of adjustment
Optimum adjustment
51
Page 52
PDR-04
6.2.3 Coarse Skew Adjustment
• Objective
• Symptom when out
To coarse adjust the angle of pickup to the disc for perform the grating and DPP
(tracking offset) adjustments correctly.
Sound broken, some discs can be played but not others.
Adjustment 1
of adjustment
»Measurement instru
ment connections
Connect the oscilloscope to
CN204(TP201), Pin 1 (RF)
(SERVO UCOM BOARD assy)
[ Settings ] 20 mV/div.
200 nS/div.
AC mode
• Player state
• Adjustment
location
• Disc
Test mode,focus and spindle servos
closed and tracking servo open.
Radial adjustment screw and
tangential adjustment screw
STD-903
[ Procedure ]
(1) Move the pickup to the position where the radial/tangential adjustment screws will be seen with the MANUAL / TRACK
SEARCH FWD ►► or REV ◄◄ keys so that the radial/tangential adjustment screws can be adjusted.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(3) Adjust the RAD (radial direction) and TAN (tangential direction) adjustment screws alternately with hexagonal screwdriver
(1.27 mm diagonal) to maximize the RF output at CN204 (TP201), Pin 1.
Note : Radial direction and tangential direction mean the direction relative to the disc shown in Fig. 2.
Radial direction
Hexagonal
screwdriver
0
Fig. 2
52
Page 53
PDR-04
6.2.4 Coarse Grating Adjustment
• Objective
• Symptom when out
To align the tracking error generation laser beam spots to the optimum angle on the track.
Play does not start, track search is impossible, tracks are skipped.
Adjustment 1
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104 (TP1), Pln3(TE)
This connection may be via a low
pass filter. (See Fig. 3)
[ Settings ] 50 mV/div.
5 mS/div.
DC mode
Player state
• Adjustment
location
Disc
Test mode,focus and spindle servos
closed and tracking servo open.
Grating slit on pickup
STD-903
[Procedure]
(1) Move the pickup to the position where the grating adjustment slit will be seen with the MANUAL / TRACK SEARCH FWD
►► or REV ◄◄ keys so that the grating adjustment can be adjusted.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then spindle servo.
(3) Insert a screwdriver into the grating adjustment slit and adjust the grating to find the null point.
For more details, see next page.
(4) If you slowly turn the screwdriver clockwise from the null point, the amplitude of the wave gradually Increases, then if you
continue turning the screwdriver, the amplitude of the wave becomes smaller again. Turn the screwdriver counterclockwise
from the null point and set the grating to the first point where the wave amplitude reaches its maximum.
Reference : Fig. 4 shows the relation between the angle of the tracking beam with the track and the waveform.
(5) Return the pickup to more or less midway across disc with the MANUAL / TRACK SEARCH ◄◄ key, press the
PAUSE II key and check that the track number and elapsed time are displayed on the front panel. If they are not displayed
at this time or the elapsed time changes Irregularly, check the null point and adjust the grating again.
Fig.3
Small
screwdriver
53
Page 54
PDR-04
Adjustment 1
[ How to find the null point ]
When you insert the small screwdriver into the slit for the grating adjustment and change the grating angle, the amplitude of
the tracking error signal at CN104 (TP1), Pin 3 (TE) changes. Within the range for the grating, there are five or six locations
where the amplitude of the wave reaches a minimum. Of these five or six locations, there is only one at which the envelope
of the waveform is smooth. This location is where the three laser beams divided by the grating are all right above the same
track. (See Fig. 4.)
This point is called the null point. When adjusting the grating, this null point is found and used as the reference position.
Turning the grating counterciockwise
Grating adjustment position
/ Null point
. \
Waveform of
CN104 (TP1), Pin 3 (TE)
Tuming the grating clockwise
ms
6.2.5 DPP (Tracking Offset) Adjustment
• Objective
• Symptom when out
To correct for the variation in the sensitivity of the tracking photodiode.
Play does not playback, track search is impossible, tracks are skipped.
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104(TP1), Pin3 (TE)
[This connection may be via a low
pass filter. (15k£2 + O.OOlpF) ]
[ Settings ] 50 mV/div.
5 mS/div.
DC mode
mmmmmm
Null point waveform Maximum amplitude Wavefonn other than the
Note: If the difference between the amplitude of the error signal at the
innemnost edge and outermost edge of the disc is more than 10%,
adjust the grating again.
Fig. 4
• Player state
wavefonn null point
Test mode,focus and spindle servos
closed and tracking servo open.
• Adjustment
location
• Disc
VR112(TE. OFS)
(HEAD BOARD assy)
STD-903
Adjustment 1
[ Procedure ]
(1 ) Move the pickup to the midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
MM keys.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then spindle servo.
(3) Line up the bright line (ground) at the center of the oscilloscope screen and put the oscilloscope into DC mode.
(4) Adjust VR112 (TE. OFS) so that the positive amplitude and negative amplitude of the tracking error signal at CN104
When there is a DC
component
54
When there is no DC
component
Page 55
PDR-04
6.2.6 Fine Focus Offset Adjustment
> Objective
Symptom when out
To optimize the DC offset voltage of the focus servo circuit.
The player does not focus in, sound broken and the RF signal is dirty.
Adjustment 1
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN204(TP201), Pin 1 (RF).
(SERVO UCOM BOARD assy)
[ Settings ]
20 mV/div.
500 nS/div.
AC mode
Player state
• Adjustment
location
• Disc
Test mode, play
VR105 (FE.OFS)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► ►» or REV
keys.
(2) Press the FINALIZE key, the play ► key, then the PAUSE ll key in that order to close the respective servos and put the
player into play mode.
(3) Adjust VR105 (FE. OFS) so that the 3T waveform at CN204 (TP201), Pin 1 (RF) is maximum.
Out of adjustment
r V •> 'ft ^ , ft- .ft- y :
Optimum adjustment
55
Page 56
PDR-04
6.2.7 Fine Skew Adjustment
• Objective
To adjust the angle of the pickup relative to the disc so that the laser beams are shone straight
Adjustment 1
down into the disc for the best read out of the RF signals.
• Symptom when out
Sound broken, some discs can be played but not others.
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN204 (TP201), Pin 1 (RF)
(SERVO UCOM BOARD assy)
[Settings] 20 mV/div.
200 nS/div.
AC mode
• Player state
• Adjustment
location
• Disc
Test mode, play
Pickup radial adjustment screw and
tangential adjustment screw
STD-903
[ Procedure ]
(1) Move the pickup to the position where the radial/tangential adjustment screws will be seen with the MANUAL / TRACK
SEARCH FWD ►► or REV ◄◄ keys so that the radial/tangential adjustment screws can be adjusted.
(2) Press the FINALIZE key, then the PLAY ► key to the PAUSE II key in that order to close the respective servos and put the
player Into play mode.
(3) First, adjust the radial adjustment screw with the hexagonal screwdriver (1.27 mm) so that the eye pattern (the diamond
shape at the center of the RF signal) can be seen the most clearly.
(4) Next, adjust the tangential adjustment screw with the hexagonal screwdriver so that the eye pattern can be seen the most
clearly. (Fig. 5).
(5) Adjust in the order of the radial adjustment screw and the tangential screw again, so that the eye pattern can be seen the
most clearly. As necessary, adjust the two screws alternately so that the eye pattern can be seen the most clearly.
(6) After the adjustment, remove the float screw, turn over the servo mechanism assembly, then stabilize the radial adjustment
screw and the tangential adjustment screw with an adhesive.
(Front side)
Stabilize each screw
Hexagonal
screwdriver
56
Page 57
PDR-04
Adiustment 1
Out of adjustment
Optimum adjustment
Out of Optimum Out of
adjustment adjustment adjustment
Fig. 5 Eye pattern
6.2.8 Grating Re-adjustment
Adjust in the same manner as "4. Coarse Grating Adjustment ” in Adjustment 1.
Out of adjustment
Adjustment 1
6.3 Adjustment 2
6.3.1 CD-R VCO Control Voltage Adjustment
• Objective
• Symptom when out
of adjustment
• Measurement instru
ment connections
[ Procedure ]
(1) Adjust VR301 (VCO CON) so that the voltage at Pin 1 (VCOIN) of CN331 (TP30) becomes 2.5 ± 0.1 V.
To optimize the CD-R VCO control voltage adjustment of VCO 1C.
Player does not record or playback CD-R discs.
Connect the multimeter to
• Player state
Test mode, stop
CN331 (TP30), Pin 1 (VCOIN)
(AUDIO DIGITAL BOARD assy)
• Adjustment
location
• Disc
VR301 (VCOIN)
(AUDIO DIGITAL BOARD assy)
None needed
Adjustment 2
57
Page 58
PDR-04
6.3.2 Multi Pulse Time Adjustment
• Objective
• Symptom when out
Pulse adjustment for recording (1)
Player does not playback CD-R discs which was recorded with this player.
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN3506, Pin 6 (MPLS).
(STRATEGY SMALL BOARD assy)
[ Settings ] 1 mV/div.
20 nS/div.
DC mode
• Player state
• Adjustment
location
• Disc
Test mode, stop
VR3501 (MPLS DLY)
(STRATEGY SMALL BOARD assy)
None needed
[ Procedure ]
(1) Disconnect a connector CN3502.
(2) Adjust the time from rising edge to falling edge of Waveform with 2V level.
(3) Adjust VR3501 (MPLS DLY) so that the DC voltage at CN3506 pin 6 (MPLS) becomes 70nS ± 3nS.
2V
Adjustment 2
GND
±3nS
6.3.3 EFM Rising Edge Time Adjustment
» Objective
> Symptom when out
Pulse adjustment for recording (2)
Player does not playback CD-R discs which was recorded with this player.
of adjustment
» Measurement instru
ment connections
Connect the oscilloscope to
CHI : CN3506, Pin 5 (EFM IN).
CH2 : CN3506, Pin 4 (SEFM).
(STRATEGY SMALL BOARD assy)
[ Settings ]
CHI : 1 V/dIv. DC mode
20 nS/div.
CH2 :1 V/div. DC mode
• Player state
• Adjustment
location
• Disc
Test mode, recording
VR3502 (EFM DLY)
(STRATEGY SMALL BOARD assy)
None needed
[ Procedure ]
(1) Disconnect a connector CN3502.
(2) Turn VR104 (REC. PW) fully counterclockwise to reduce the power is minimum.
(3) Press REC O and REC MUTE O keys in this order to lights up the laser diode.
(4) Adjust the time from rising edge of CN3506 pin 5 to rising edge of pin 4 of waveform with 2V level
(5) Adjust VR3502 (EFM DLY) so that the DC voltage becomes 80nS ± 3nS.
Adjustment 2
power ON
58
Page 59
PDR-04
6.3.4 3T Falling Edge Time Adjustment
• Objective
• Symptom when out
of adjustment
• Measurement instru
ment connections
[Procedure]
(1) Disconnect a connector CN3502.
(2) Turn VR104 (REC. PW) fully counterclockwise to reduce the power is minimum.
(3) Press REC O and REC MUTE O keys in this order to lights up the laser diode.
(4) Adjust the time from falling edge of CN3506 pin 3 to falling edge of pin 2 of waveform with 2V level.
(5) Adjust VR3503 (3T DLY) so that the DC voltage becomes 40nS ± 3nS.
Pulse adjustment for recording (3)
Player does not playback CD-R discs which was recorded with this player.
Connect the oscilloscope to
CHI : CN3506, Pin 3 (3T IN).
CH2 : CN3506, Pin 2 (3T OUT).
(STRATEGY SMALL BOARD assy)
[ Settings ]
CHI : 1 V/div. DC mode
20 nS/div.
CH2 :1 V/div. DC mode
Player state
• Adjustment
location
• Disc
Test mode, recording
VR3503 (3T DLY)
(STRATEGY SMALL BOARD assy)
None needed
Adjustment 2
power ON
6.3.5 WBL+ Offset Adjustment
• Objective
• Symptom when out
of adjustment
• Measurement instru
ment connections
[ Procedure ]
To adjust the gain balance of the wobble signal.
Player does not record or playback CD-R discs.
Connect the oscilloscope to
CNI 04 (TP1), Pin 6 (RWBL).
(HEAD BOARD assy)
[ Settings ] 1 mV/div.
5 mS/div.
DC mode
• Player state
• Adjustment
location
• Disc
2V
*GND
Adjustment 2
Test mode, stop
VR107(WBL+. OFS)
(HEAD BOARD assy)
None needed
(1) Turn VRI08 (WBL. OFS) to fully counterclockwise.
(2) Adjust VR107 (WBL+. OFS) so that the DC voltage at CNI04 (TP1), Pin 6 (RWBL) is -20mV + 10mV.
59
Page 60
PDR-04
6.3.6 Coarse WBL Offset Adjustment
• Objective
• Symptom when out
To optimize the DC offset voltage of the wobble amp.
Player does not record or playback CD-R discs.
of adjustment
• Measurement instrument connections
Connect the oscilloscope to
CN104(TP1), Pin 5 (WBL).
(HEAD BOARD assy)
[ Settings ] 1 mV/div.
5 mS/div.
DC mode
• Player state
• Adjustment
location
• Disc
Test mode, stop
VRI 08 (WBL. OFS)
(HEAD BOARD assy)
None needed
[ Procedure ]
(T) Adjust VRI08 (WBL. OFS) so that the DC voltage at Pin 5 (WBL) of CN104 (TP1) becomes 0 ± 10mV.
6.3.7 Playback Power Re-adjustment
Adjust in the same manner as “1. Playback Power Adjustment ” in Adjustment 1.
Adjustment 2
Adjustment 2
6.3.8 Coarse Focus Offset Adjustment
• Objective
• Symptom when out
To optimize the DC offset voltage of the focus error amp.
The player does not focus in add the RF signal is dirty.
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN204(TP201), Pin 1 (RF).
(SERVO UCOM BOARD assy)
[ Settings ] 20 mV/div.
2 mS/div.
DC mode
• Player state
• Adjustment
location
• Disc
Test mode, focus and spindle servos
closed and tracking servo open.
VR105 (FE. OFS)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1 ) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(2) Adjust VR105 (FE. OFS) so that the amplitude of RF signal at CN204 (TP201 ), Pin 1 (RF) is maximum.
Adjustment 2
60
Out of adjustment
Optimum adjustment
Page 61
PDR-04
6.3.9 Main and Sub Mix Ratio Adjustment
► Objective
• Symptom when out
To mix the gain of the main signal output and sub signal output of the pickup.
Player does not playback.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CH1:CN104(TP1), Pint (STE)
CH2: CN104 (TP1), Pin 2 (MSTE)
[These connections must be via
low pass filters. ]
[ Settings ]
cm : 50 mV/div. AC mode
10 mS/div. ADD mode
CH2 : 100 mV/diV. AC mode
> Player state
> Adjustment
location
• Disc
Test mode, focus and spindle servos
closed and tracking servo open
VR110(MS. MIX)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1 ) Press the FINALIZE key, then the PLAY ► key In that order to close the focus servo then the spindle servo.
(2) Set the oscilloscope to ADD mode (waveform adding mode of CHI and CH2) and observe the adding waveform of CHI
and CH2.
(3) Adjust VR110 (MS. MIX) so that the amplitude of waveform becomes minimum.
6.3.10 Tracking Amp. Gain Adjustment
• Objective
• Symptom when out
To correct the discrepancy in the tracking error level with the pickup.
Player does not playback, track search is impossible, tracks are skipped.
Adjustment 2
of adjustment
» Measurement instru
ment connections
Connect the oscilloscope to
CN104 (TP1), Pin3(TE)
[These connection must be via a
low pass filter (15kQ + 0.001 pF). ]
[ Settings ]
20 mV/div.
5 mS/dIv.
DC mode
Player state
» Adjustment
location
• Disc
Test mode, focus and spindle servos
closed and tracking servo open
VR111 (TE. GAIN)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1 ) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(3) Line up the bright line (ground) at the center of the oscilloscope screen and put the oscilloscope into DC mode.
(4) Adjust VR111 (TE. GAIN) so that the positive amplitude and negative amplitude of the tracking error signal at CN104
(TP1), Pin 3 (TE) is 1.0V+ 0.05V.
1.0V ± 0.05V
61
Page 62
PDR-04
6.3.11 Tracking Offset Adjustment
• Objective
• Symptom when out
To correct for the variation in the sensitivity of the tracking photodiode.
Player does not playback, track search is impossible, tracks are skipped.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104 (TP1), Pin3(TE).
[ This connection must be via a low
pass filter (15kQ + 0.001 p,F).]
[Settings] 20 mV/div.
5 mS/div.
DC mode
• Player state
• Adjustment
location
• Disc
Test mode, focus and spindle servos
closed and tracking servo open.
VR112(TE. OFS)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1 ) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(3) Line up the bright line (ground) at the center of the oscilloscope screen and put the oscilloscope into DC mode.
(4) Adjust VR112 (TE. OFS) so that the positive amplitude and negative amplitude of the tracking error signal at CN104
(TP1), Pin 3 (TE) are the same (in other words, so that there Is no DC component).
Note : Perform the run-on adjustment in the section 7 and 8.
When there is a DC
component
■GND
A = B
GND
When there is no DC
component
62
Page 63
PDR-04
6.3.12 ACT Offset Adjustment
• Objective
• Symptom when out
To optimize the DC offset voltage of the actuator servo.
Player does not pause, track search is impossible, tracks are skipped.
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN5021 (TPOO), Pin 1 (ACT ERR).
(SERVO UCOM BOARD assy)
[ Settings ]5 mV/div.
5 mS/div.
DC mode
» Player state
» Adjustment
location
» Disc
Test mode, focus and spindle servos
closed and tracking servo open.
VR1 (ACT. OFS)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD
◄◄ keys.
(2) Press the FINALIZE key, then the PLAY ► key in that order to close the focus servo then the spindle servo.
(3) Adjust VRI (ACT. OFS) so that the DC voltage at CN5021 (TPOO), Pin 1 (ACT ERR) is 0 ± 20mV.
Adjustment 2
or REV
6.3.13 ACT Gain Adjustment
> Objective
» Symptom when out
To optimize the actuator servo gain.
Player does not pause, track search is impossible, tracks are skipped.
of adjustment
» Measurement instru
ment connections
Connect the oscilloscope to
CN5021 (TPOO), Pin 1 (ACT ERR).
(SERVO UCOM BOARD assy)
[ Settings ]10 mV/div.
5 mS/div.
DC mode
> Player state
• Adjustment
location
• Disc
Test mode, focus and spindle servos
closed and tracking servo open.
VRI 0 (ACT. GAIN)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(2) Press the FINALIZE key, then the PLAY ► key In that order to close the focus servo then the spindle servo.
(3) Press the WRITE key to light up the WRITE KEY LED, and short-circuit the Pin 2 and Pin 3 of CN5021 (TPOO).
(4) Adjust VR10 (ACT. GAIN) so that the DC voltage at CN5021 (TPOO), Pin 1 (ACT ERR) is -380 ± 20mV.
Note : Perform the run-on adjustment In the section 9 and 10.
Adjustment 2
63
Page 64
PDR-04
6.3.14 Fine Focus Offset Adjustment
• Objective
• Symptom when out
To optimize the DC offset voltage of the focus servo circuit.
The player does not focus in, sound broken and the RF signal is dirty.
Adjustment 2
of adjustment
> Measurement instru
ment connections
Connect the oscilloscope to
CN204(TP201), Pin 1 (RF).
(SERVO UCOM BOARD assy)
[ Settings ]20 mV/div.
500 nS/div.
AC mode
• Player state
• Adjustment
location
• Disc
Test mode, play
VR105 (FE. OFS)
(HEAD BOARD assy)
STD-R03
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(2) Press the FINALIZE key, the PLAY ► key, then the PAUSE II key in that order to close the respective servos and put
the player into play mode.
(3) Adjust VR105 (FE. OFS) so that the 3T waveform at CN204 (TP201), Pin 1 (RF) is maximum.
Note : Adjust after confirming that the WRITE KEY LED is OFF.
64
Out of adjustmentOptimum adjustment
Page 65
PDR-04
6.3.15 WBL Balance Adjustment
' Objective
Symptom when out
To adjust the gain balance of the wobble signal.
Player does not record or search or pause CD-R discs.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104 (TP1), Pin 5 (WBL).
[ This connection must be via a
high-pass filter (180pF+3.9kQ).]
[ Settings ] 5 mV/div.
20 pS/div.
______
pc mode
Player state
• Adjustment
location
Disc
Test mode, play
VR106 (WBL. BALANCE)
(HEAD BOARD assy)
STD-R03
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
keys.
(2) Press the FINALIZE key, the PLAY ► key, then the PAUSE ll key in that order to close the respective servos and put
the player into play mode.
(3) Adjust VR106 (WBL. BALANCE) so that the amplitude of waveform at CN104 (TPl), Pin 5 (WBL) is minimum.
Out of adjustment
Optimum adjustment
65
Page 66
PDR-04
6.3.16 Fine WBL Offset Adjustment
> Objective
> Symptom when out
To adjust the gain balance of the wobble signal.
Player does not record or search or pause CD-R discs.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104(TP1), Pin 5 (WBL).
[ This connection must be via a
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
keys.
(2) Press the FINALIZE key, the PLAY ► key, then the PAUSE II key in that order to close the respective servos and put
the piayer into play mode.
(3) Adjust VRI08 (WBL. OFS) so that the amplitude of waveform at CN104 (TP1), Pin 5 (WBL) is minimum.
66
•vw»wi4j(w«vw.v
Out of adjustment
Optimum adjustment
Page 67
PDR-04
6.3.17 WBL Focus Offset Adjustment
' Objective
Symptom when out
To adjust the gain balance of the wobble signal.
Player does not record or search or pause CD-R discs.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104(TP1), Pin 5 (WBL).
[ This connection must be via a
high-pass filter (180pF+3.9ki2).]
[ Settings ] 5 mV/div.
20 pS/div.
____________
DC mode
_____
Player state
• Adjustment
location
• Disc
Test mode, play
VR115(WFE. OFS)
(HEAD BOARD assy)
STD-R03
[ Procedure ]
(1) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(2) Press the FINALIZE key, the PLAY ► key, then the PAUSE II key in that order to close the respective servos and put
the player into play mode.
(3) Press the DISPLAY OFF key to light up the DISPLAY OFF KEY LED.
(4) Adjust VR115 (WFE. OFS) so that the amplitude of waveform at CN104 (TPl), Pin 5 (WBL) is minimum.
Out of adjustment
Optimum adjustment
67
Page 68
PDR-04
6.3.18 Recording Power Adjustment
• Objective
• Symptom when out
of adjustment
• Measurement instru
ment connections
To optimize the recording power of the laser diode.
The player does not record nor playback self-recorded discs. It also skips tracks and the RF
waveform is dirty. (Mo problem during CD playback)
Connect the multimeter to
CN104 (TP1), Pin 7 (PWAJT).
' Player state
• Adjustment
location
• Disc
Test mode, maximum recording
power ON
VR104 (REC. PW)
(HEAD BOARD assy)
None needed
Adjustment 2
[ Procedure ]
When Adjusting with the multimeter
(1) Fully turn VR104 (REC. PW) counterclockwise to reduce the power to the minimum.
(2) Press REC o and REC MUTE O keys in this order to lights up the laser diode.
(3) Adjust the voltage value of Pin 7 (PWAJT) of CN104 (TP1) to the voltage value (REC. PW voltage + 10mV) displayed on
the pickup flexible cable using VR104 (REC. PW).
Notes:
• Power more than ten times greater than playback power is released during these adjustment.
Never look directly at the objective lens.
• This adjustment cannot be performed accurately if disc is set. Be sure to remove disc first before adjustments.
• Perform this adjustment more than two minutes after starting up the test mode (after inserting the AC plug).
• The laser diode may be damaged if the recording power is greater than the specified value.
Always perform step 1 before making adjustments and be careful not to exceed the adjustment value by more than 50mV
(specified value in step 3).
P: Playback Power
R: Recording Power
Reference : When adjusting with optical power meter.
(1) Fully turn VR104 (REC. PW) counterclockwise to reduce the power to the minimum.
(2) Move the pickup to the outer edge of the disc with the MANUAL / TRACK SEARCH FWD ►► key.
(3) Press REC o and REC MUTE O keys in that order to lights up the laser diode.
(4) Shine the light discharged from the objective lens in the pickup on the light power meter sensor and adjust VR104 (REC.
PW) so that the recording laser diode output is an average of 4.7mW ± 0.1 mW (Wavelength 790nm, Average mode).
Notes:
• Perform this adjustment more than two minutes after starting up the test mode (after inserting the AC plug).
• The laser diode may be damaged if the recording power is greater than the specified value.
Always perform step 1 before making adjustments and be careful not to exceed the adjustment value by more than 0.3mW
(specified value in step 3).
• Power more than ten times greater than playback power is released during these adjustment.
Never look directly at the objective lens.
68
Page 69
PDR-04
6.3.19 H F Amp. Gain Adjustment
' Objective
' Symptom when out
To correct the discrepancy in the HF level with the pickup.
Player does not record, track search is impossible.
Adjustment 2
of adjustment
• Measurement instru
ment connections
Connect the oscilloscope to
CN104(TP1), Pin8(HF).
[Settings] 50 mV/div.
500 nS/div.
DC mode
i Player state
• Adjustment
location
• Disc
Test mode, play
VR119(HF. GAIN)
(HEAD BOARD assy)
STD-903
[ Procedure ]
(1 ) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
keys.
(2) Press the FINALIZE key, the PLAY ► key, then the PAUSE ll key in that order to close the respective servos and put
the player into play mode.
(3) Line up bright line (ground) at the center of the oscilloscope screen and put the oscilloscope into DC mode.
(4) Adjust VR119 (HF. GAIN) so that the amplitude of waveform at CN104 (TP1 ), Pin 8 (HF) is 2.0V + 0.1 V.
Note : Adjust after checking that the DISPLAY OFF KEY LED is OFF.
(1) Set the AF generator output to 1.4kHz and 1 Vp-p.
(2) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(3) Press the FINALIZE key, the PLAY ► key, then the PAUSE II key in that order to close the respective servos and put
the player Into play mode.
(4) Adjust VR201 (FCS. GAIN) so that the llssajous waveform is symmetrical about X axis and the Y axis.
? i : i i i : = I i :
-t-i
.....
r-i-i-fi---: :
...
r-r-
;
...
-i---
■¿•t
! i
.
...i...
i-
...^...
: -
J«
CN204
...
r
...i....
r-1
......
■
•••r..;
: ;■ -r—i
i ! i
.................
i i i i i M : i
i
.....
i
...j...
;
...
:
i-—i
r-1....1 ^
__
I....j
...;....i....i....i.....
Fig. 6
..I..j...f...I..i...}...
.
......
i ...J
1.!
,±i:
r
i
70
Higher gain
Optimum gain
Lower gain
Page 71
PDR-04
6.3.21 Tracking Servo Loop Gain Adjustment
• Objective
• Symptom when out
To optimize the tracking sen/o loop gain.
Playback does not start, during searches the acutuator is noisy, or tracks are skipped.
(1) Set the AF generator output to 1.2kHz and 2Vp-p.
(2) Move the pickup to midway across the disc (R = 35mm) with the MANUAL / TRACK SEARCH FWD ►► or REV
◄◄ keys.
(3) Press the FINALIZE key, the PLAY ► key, then the PAUSE II key In that order to close the respective servos and put
the player Into play mode.
(4) Adjust VR202 (TE. GAIN) so that the lissajous waveform is symmetrical about X axis and the Y axis.
CN204
....
t"i.............i"i
Higher gain
........
.....
Fig. 7
M 1 : i
i
\ f -1
li
........I...
...
...........................
.............................^....
Optimum gain
....
i
Lower gain
Page 72
PDR-04
7. GENERAL INFORMATION
7.1 PARTS
7.1.1 1C
• The infonnation shown in the list is basic infonnation and may not correspond exactly to that shown in schematic diagrams.
— 5 bit (D/A out) recording laser power output setting
MSB —
"L" when tracking error envelope (detection is reset
Not used
"H" during N track jump
"H" during loading close
"H" during loading open
Optical axis switching circuit ON/OFF
EEPROM data writing and reading enable output
Not used
Focus offset switching output. During search: L Other than search: H
Strategy control output 1
Strategy control output 2
LSB —
—Tracking error amplifier gain adjustment
MSB —
"L" when SONY servo 1C DIRC is output
Mirror detection circuit selection SW CD_ R/"~ CD
Laser diode OFF/ ON
Function
/-Ч
71
POC7
AMUTE
о
PDR-04 switches the record EFM in accordance with the
characteristic of OD-R disc.
Pulse has four varieties (strategy) which is controlled by
strategy control output 1 and 2 (STCNl, STCN2).
Logical setting table of STCNl and STCN2
STCNlSTCN2
0
0
1
11
Note) In the Test mode, ‘EFM2* is selected only.
0
1EFM2
0
strategy Type
EFM1
EFM3
EFM4
Audio final stage mute H (According to mode controller instructions)
H
Turns mute ON during REC PAUSE, when input selector is switched, and during STOP
FL grid output 5
FL grid output 6
FL grid output 7
FL grid output 8
FL grid output 9
FL grid output 10
FL grid output 11
Connected to VDD
Serial clock for JIG communication
Serial output for JIG communication
Serial input for JIG communicatiion
XTAL ON/OFF (L: No FS model and at digital selection only)
Encoder VCO ON/OFF (at CD = H)
Mechanism controller, LSI serial clock
Mechanism controller, serial output
Mechanism controller, serial input
Mode controller reset input
Standby LED (L: ON)
Display ON/OFF LED (L: ON)
Connected to GND
Between mode controller and LC89585 serial communication currently used (L)
Not used
PLL ON/OFF (No FS model and at digital selection ; L (PLL oscillation)
XTAL ON (L), OFF (H)
Emphasis control L; deemphasis
Mechanism controller, ATIP decoder reset H : Release reset
Optical input selection (at optical input selection (DIGITAL1)= L)
Not used
HCommunication latch output for analog input ATT 1C (L: during used)
LXAUTE output L: MUTE ON
FL segment output 10
LFL segment output 8
FL segment output 7
LFL segment output 6
FL segment output 5
L
VLOAD
FL segment output 4
L
LFL segment output 3
LFL segment output 2
FL segment output 1
L
LFL segment output 0
LFL grid output 10
FL grid output 9
L
FL grid output 7
L
Function
85
Page 86
PDR-04
(2) System serial communication
The mode controller performed serial communication between
the mechanism controller and LC89585 (digital interface LSI)
and PDC020A (FS converter LSI).
The mechanism controller also performed communication
^ The mechanism controller and mode controller observes
the state of the other side’s control line, and stops cormnu-
nication processing of transmission if conditions are not
satisfied after a certain time.
Page 87
PDR-04
(4) Communication with digital interface LSI
(LC89585, IC301)
Communication format
Communication with the digital interface LSI is performed
using four lines.
XFUSE is set to L during communication so that there are no
clashes with the mechanism controller.
• FSI/FSO .. Serial data transmission line
• BLREQ ... Data enable
• XFUSE.... L when the mode controller is using the
communication line
Communication is performed in one main routine.
The communication timing is controlled by the mode
controller.
No transmission is performed during communication between
the mechanism controller and LC89585.
(5) Communication with Analog Input ATT LSI
(LM1972M)
Confirm that the communication is performed by the
following procedure.
• FSCK
..........
Serial transmission clock (1 MHz)
• FSI/FSO.. Serial data transmission line
• AATLAT Data enable
(Command control)
LREQ
FSCK
FSO
FSI
(Data reading)
irUUlJLflJUir
Control data
87
Page 88
PDR-04
I LM1972M (ALC BOARD ASSY : IC2001)
2-CHANNEL 78dB AUDIO ATTENUATOR WITH MUTE
Pin Arrangement (Top view)
Clock selection At normal speed ; L : XTI= 256fs, H : XTI= 384fs
1
-Digital power supply
Digital ground
Crystal resonator output
Clock input
Power down
1
When this pin is set to L, reset the filter and modulator, and it becomes power down state.
1Serial bit clock 64fs is recommended.
1Serial data Input 2's complement, MSB first
UR clock
1
Soft mute H: start the soft mute L: release
1
Double speed sampling mode L: Normal speed H: Double speed
1
Deemphasis mode
It correspond to tri-frequency
Input format
1
Power supply
R ch analog output
0
L ch analog output
0
Common voltage pin, AVDD/2
0
Analog power supply
Analog ground
Reference voltage input
1
The voltage difference between this pin and AVSS pin decide to full scale of D/A output.
Zero Input detection pin When the data is input to SDATA pin which is continuosly zero for 8192
0
times on both channels, this pin becomes "H".
I/F level selection T": CMOS level (DVDD= 2.7V to 5.5V) "H": TTL level (DVDD= 4.5V to 5.5V)
Hold the tray panel with your hands as shown in Fig. 1, and
grasp the tray with your thumbs and then lift the tray panel
up while pulling it toward you with the othCT fingers. (Fig. 2)
PDR-04
(3) REMOVE AND SET UP THE HEAD BOARD ASSY
® Remove the bonnet.
(D Remove the tray panel (Refer to section 1).
d) Remove the five screws of the flront panel.
(2) INSTALL THE TRAY PANEL
Front panel
1 OO °o°
1
(Right side)
0133 o
ScrewScrew
Fig. 4
0 Pull out the right side of the front panel to the firont and
remove the four screws of the board.
Screw
0 Remove the fixtures of the wires connected to the board
(cord holder, PCB binder).
® Place the HEAD BOARD ASSY upright against the slit
of the float base.
Align the tray panel with the grooves located at both edges of
the tray. And then press it down till it stops. (Fig. 3)
95
Page 96
PDR-04
7.3 EXPLANATION
7.3.1 BLOCK DIAGRAM
(1) SERVO SYSTEM BLOCK
Fheadboardassy
or
LOADING,
MOTOR
96
Page 97
PDR-04
Page 98
PDR-04
(2) AUDIO SYSTEM BLOCK
I
AUDIO DIGITAL BOARD ASSY
Page 99
PDR-04
99
Page 100
PDR-04
8. PANEL FACILITIES AND SPECIFICATIONS
■ PANEL FACILITIES
• FRONT PANEL
POWER switch and STANDBY indicator
(STANDBY/ON)
TRACK NO. write buttons
(AUTO/MANUAL, WRITE)
0 PIONCCR
COMPACT DISC RECORDER P
STANDBY
------
O
POWER
STANDBY/ON
DR-04
TRACK NO.n
AUTOMMANUALl WRITE
(MANUAL)
r
DISPLAY OFF button and indicator
Remaining recording time
can also be checked.
O
I
Remote control sensor
N ^
^ fid m n iwi I
Ü (D É3 CUBI
_n COMPACT
Èm
INPUT SELECTOR button
Also for monitoring input
STABLE PLATTER MECHA
FINALIZE button Disc tray
(For TOC recording)
DIGITAL SYNCHRO button
100
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