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COMPACT DISC PLAYER

CDC-697 SERVICE MANUAL




IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.




I CONTENTS
TO SERVICE PERSONNEL ...................................... 2­3 ERROR MESSAGES ............................................. 16­18
PREVENTION OF ELECTROSTATIC DISCHARGE .... 4 IC DATA ................................................................. 19­24
FRONT PANEL .............................................................. 4 DISPLAY DATA ........................................................... 25
REAR PANELS .......................................................... 5­6 PIN CONNECTION DIAGRAMS .................................. 26
REMOTE CONTROL PANEL ........................................ 6 BLOCK DIAGRAM ....................................................... 27
SPECIFICATIONS .......................................................... 7 PRINTED CIRCUIT BOARDS................................ 28­33
INTERNAL VIEW ........................................................... 7 SCHEMATIC DIAGRAMS ...................................... 35­36
DISASSEMBLY PROCEDURES ............................. 8­10 REPLACEMENT PARTS LIST .............................. 37­44
STANDARD OPERATION CHART ....................... 11­12 REMOTE CONTROL .................................................... 45
TEST MODE ........................................................... 13­15 Parts List for Carbon Resistors ................................ 46
CDC-697




101030 2006 All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan
'06.09
CDC-697




I TO SERVICE PERSONNEL AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked Z and OUTLET UNDER TEST EQUIVALENT
must be replaced with parts having specifications equal to
those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated INSULATING
from supply circuits. TABLE

G Meter impedance should be equivalent to 1500 ohms shunted G Leakage current must not exceed 0.5mA.
by 0.15µF. G Be sure to test for leakage with the AC plug in both polari-
ties.


WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY
REASON WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or
expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.

About Lead Free Solder
All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair
work.
· Sn + Ag + Cu (tin + silver + copper)
· Sn + Cu (tin + copper)
· Sn + Zn + Bi (tin + zinc + bismuth)

Caution:
As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead solder, be sure
to use a soldering iron suitable to each solder.


WARNING: Laser Safety
This product contains a laser beam component. This component may emit invisible, as well as visible radiation,
which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be
used during servicing of the unit.
1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.
2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.

3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.

Laser Emitting conditions:
1) When the Top Cover is removed, and the STANDBY/ON SW is turned to the "ON" position, the laser component will emit
a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the
lens of the laser pick-up unit. Do not attempt any servicing during this period!
If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you will not be exposed to any laser
emissions.

2) The laser power level can be adjusted with the VR on the pick-up PWB, however, this level has been set by the factory
prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this
CDC-697




manual. Adjustment of this control can increase the laser emission level from the device.



2
CDC-697




PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to care-
fully follow the instructions below when servicing.

1. Laser Diode Properties

· Material : GaAlAs
· Wavelength : 790 nm
· Emission Duration : Continuous
· Laser Output : . 1.23 mW (max.)

2. When checking the laser diode emission, keep your
eyes more than 30 cm away from the objective lens.



Optical pick-up

VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-
SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING! : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.

WARNING




CDC-697




3
CDC-697




I PREVENTION OF ELECTROSTATIC DISCHARGE
The laser diode in the DVD mechanism may be damaged due to static electricity from clothes or the human body. Use caution
to prevent electrostatic damage when servicing or handling the DVD-mechanism.
1. Grounding for electrostatic damage prevention
Some devices, such as the DVD player, use an optical pickup (laser diode) that will be damaged by static electricity in the
working environment. Only attempt service after ensuring that all grounding procedures have been completed.

1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.

2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.




Anti-static wrist strap
1M ohms
Conductive material
(sheet) or steel sheet




2. Handling Precautions for DVD mechanism
1. Handle the DVD mechanism gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.




I FRONT PANEL
CDC-697 (U, C, R, T, A, B, G, L models)
CDC-697




4
CDC-697




I REAR PANELS
CDC-697 (U, C models)




CDC-697 (R model)




CDC-697 (T model)




CDC-697 (A model)
CDC-697




5
CDC-697



CDC-697 (B, G models)




CDC-697 (L model)




I REMOTE CONTROL PANEL
CDC-697




6
CDC-697




I SPECIFICATIONS I INTERNAL VIEW
I Audio Section
Output Level (1 kHz, 0 dB) ................................................. 2 ±0.5 V 1 MAIN (7) P.C.B. (U, C, A, B, G models)
Signal to Noise Ratio .............................................. 106 dB or more
2 MAIN (2) P.C.B. (R, L models)
Dynamic Range .......................................................... 96 dB or more
3 CLAMP ASS'Y
Harmonic Distortion + Noise (1 kHz) ..................... 0.003 % or less
4 CM-230A UNIT
Frequency Response (2 to 20 kHz) .................................... ±0.5 dB
5 MAIN (1) P.C.B.
I General 6 MAIN (6) P.C.B.
Power Supply 7 MAIN (5) P.C.B.
U, C models .......................................................... AC 120 V, 60 Hz
R, L models ......................... AC 110/120/220/230-240 V, 50/60 Hz
8 MAIN (3) P.C.B.
T model ................................................................. AC 220 V, 50 Hz 9 TRAY ASS'Y
A model ................................................................. AC 240 V, 50 Hz
B, G models .......................................................... AC 230 V, 50 Hz 0 MAIN (4) P.C.B.
Power Consumption ................................................................ 12 W
Dimensions (W x H x D) ......................................... 435 x 116 x 403
(17-1/8" x 4-9/16" x 15-7/8") 1 2 3 4 5 6
Weight ............................................................... 5.5 kg (12 lbs. 2 oz.)
Finish
Black color ............................................ U, C, R, T, A, B, G models
Titanium color .............................................................. G, L models
Accessories
Remote control x 1, Batteries (UM-3) x 2, Power cable x 1 (U, C, A, B,
G models), Audio pin cable x 1

* Specifications are subject to change without notice due to product
improvements.

U .......... U.S.A. model C ...... Canadian model
R .......... General model T ....... Chinese model
A .......... Australian model B ...... British model
G .......... European model L ....... Singapore model




· DIMENSIONS
(1/4")
7
(15-1/2")


(15-7/8")
394.5


403




7 8 9 0
(1/16")
1.5
(3-15/16")


(4-9/16")
100


116
(5/8")




435 (17-1/8")
16




Unit: mm (inch)
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7
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I DISASSEMBLY PROCEDURES
(Remove parts in the order as numbered.)
1. Removal of Top Cover · Precaution for installation of the Tray Ass'y.
a. Remove 4 screws (1) and 3 screws (2). (Fig. 1) On tray ass'y setting.
b. Lift the top cover at the rear and move it rearward Check the direction of marking "H " on gear accord-
slantingly. ing to this drawing.

2. Removal of Clamp Ass'y Gear/L0

a. Remove 2 screws (3). (Fig. 1)
b. Remove clamp ass'y. (Fig. 1)

3. Removal of Tray Ass'y
a. Remove 1 screw (4). (Fig. 1)
b. Turn gear/L0. (Fig. 2) Counter clockwise gradually
until immediately before the tray starts to move and
stop it there. Front panel

CAUTION: Gear/L0, if turned counter clockwise continu-
ously, will mesh with the gear of the tray and Gear/L01
the tray will come out. When removing the Marking
tray, use care so that gear/L0 will not mesh
Fig. A
with the gear of the tray.
c. Pull out the tray ass'y.

4. Removal of Table · IMPORTANCE: Installation of Table.
a. Remove 1 screw (5) and then remove the support/T. Install the table according to the following procedure.
(Fig. 1) 1) Slide the lever so that the gear/RT1 becomes
b. Remove the plate/table. (Fig. 1) free. (Fig. B-1)
c. Remove 1 screw (6) and then take off the table. 2) With the "H " mark on the gear/RT1 aligned with
(Fig. 1) the same mark on the tray, lock it with the lever.
(Fig.B-1)
Top cover 2
3) Install the table by aligning it to the thick line on " / "
1 mark. (Fig. B-2)
* Check that the Table is locked after installa-
Plate/Table tion.
3
6
1
4 Fit the gear/RT1 to "L" mark.
Clamp ass'y
Gear/RT1
5
Table
Support/T
Tray




Lever
Lock

Tray
Unlock


Fig. 1 Fig. B-1

Front panel unit
Fit the table to the thick line on " / " mark.
Tray
Tray



Table
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Fig. B-2
Gear/L0

8 Fig. 2
CDC-697



CM-230A unit can not be removed without removing 6. Removal of PU Mechanism Unit
the Front Panel Unit. a. Remove 2 screws (A) and then remove the PU unit
ass'y. (Fig. 6)
5-A. Removal of Front Panel Unit
a. Remove CB200 and CB304. (Fig. 4) A
b. Remove 2 screws (7), 3 screws (8) and 1 screw
(9). (Fig. 3) PU unit ass'y
c. Remove the front panel unit. (Fig. 3)

CM-230A unit



7



Fig. 6

b. Remove 4 screws (B) and then remove the PU
8
7 mechanism unit. (Fig. 7)
9 Front panel unit
B B
Fig. 3



CB410

CB202 CB1
CB2


CB300
CB304
PU mechanism unit



CB200 Fig. 7



Fig. 4 · Operation Check Procedure
a. Disassembly
1) Remove the top cover.
2) Remove the clamp ass'y.
5-B. Removal of CM-230A Unit
3) Remove the stabilizer from the holder.
a. Remove 5 screws (0). (Fig. 5)
b. Remove CB1, CB2 and CB300. (Fig. 4) Turn the plate clockwise by 30° while holding the
c. Take the CM-230A unit out slowly. (Fig. 5) stabilizer, and the plate will come off. Remove the
stabilizer from the holder.
CM-230A unit 0 b. Clamp the disc by using the stabilizer.
c. Set to the TEST mode and check for any faulty
0
conditions.

Plate
Frame damper
Stabilizer

Unlock




Lock


Fig. 5
CDC-697




Holder


Fig. C
9
CDC-697



· When checking the P.C.B.:
a. Remove the top cover.
b. Remove the tray ass'y.
c. Remove 3 screws (1) and 2 jack screws (2). (Fig. 1)
d. Remove 1 screw (3), 1 screw (4) and 1 push rivet.
(Fig. 2)
e. Spread a cloth over the main chassis. (Fig. 2)
f. Put the MAIN (1) and MAIN (6) P.C.B.s on end.
(Fig. 2)
g. Connect the ground point of MAIN (6) P.C.B. to rear
panel by using ground lead. (Fig. 2)

4
3 Push rivet CAUTION: The ground point must be connected to rear
panel to keep the circuit in normal operation
when MAIN (6) P.C.B. is removed from rear
panel.


Ground lead



Rear panel
1 Ground point
MAIN (1) P.C.B. 2 MAIN (6) P.C.B. (PJ101)
MAIN (6) P.C.B.
1 MAIN (1) P.C.B.

Fig. 1 Ground lead




Chassis


Rear panel


Cloth




Fig. 2



h. Remove 5 screws (5) and 1 screw (6). (Fig. 3)
i. Remove the front panel from the chassis.



Front panel


5




Chassis
5
5
6

Fig. 3
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10
CDC-697




I STANDARD OPERATION CHART
Press "OPEN/CLOSE" key. "OPEN" is displayed.


Forced feed return operation. TRV signal is output until detection of FEED LIMIT switch.


Clamp down operation. Proceeds to next step after detection of CLAMP switch. (SW401)


Disc table reset.
Tray open. Stops after detection of LOADING switch. (SW400)


Tracking offset auto adjustment.


Focus offset auto adjustment.


Load a disc in DISC 1.


Press "PLAY" key or push the tray. DISC 1 " " flashes.

Tray closed. Proceeds to next step after detection of LOADING switch. (SW400)
Table rotate. DISC "1" is turned to DM clamp position.


Disc search. DISC 1 " " changes from flashing into lighting.


Disc mechanism unit clamped up. Proceeds to next step after detection of CLAMP switch. (SW401)


FEED LIMIT switch search. FLSW = "L" (IC309, pin 23)

Laser on.


Disc scan.


Focus gain rough adjustment.


Focus search operation.


Focus lock servo on. FLOCK = "H" "L" (IC309, pin 8)


Spindle motor accelerated.


Tracking servo on. TLOCK = "H" "L" (IC309, pin 7)


Disc servo on.


VCO lock.


Tracking gain rough adjustment.


Tracking balance adjustment. (only tray open/close)
CDC-697




Focus balance adjustment.


A
11
CDC-697




A


Focus gain adjustment.


Tracking gain adjustment.

*TOC READ * ~ Data fetch cycle ~


Track No. "1" is searched.


After searching the beginning, Mute is cancelled. : MUTE OFF = "L" "H", "0:00" is displayed.
(IC309, pin 28)
~ PLAY ~

Set to search by means of "Y", "T" key.


Mute on. : MUTE ON = "H" "L"

Track search.


After searching the beginning, Mute is cancelled. : MUTE OFF = "L" "H", "0:00" appears on the display.


~ PLAY ~

Press the "STOP" key.


Mute on.


Spindle motor stop.


Laser off.


Forced feed return. : FLSW = "L" (IC309, pin 23)

~ STOP ~
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12
CDC-697




I TEST MODE
· Starting TEST mode
Test mode is started when the power is turned on while the "PLAY/PAUSE" and "STOP" keys on the panel are
simultaneously pressed and held.
When the test mode is started, as shown below is displayed.


"TEST" is displayed.




The firmware version of microprocessor and check sum value are displayed.




Starting TEST mode.


NOTE: To fully operate all test modes the remote control must be used.

· Function List of Panel Keys
Note: "traverse servo" means the same as "feed servo".
Panel key Function
OPEN/CLOSE Tray open/close.
PLAYXCHANGE Rotating the mode of coefficients. (Coefficient mode Coefficient setting Product mode) Pressing
twice will set to the product mode.
PLAY/PAUSE Plays if focus servo is effective. TRON, MUTE OFF.
STOP All stop. (Focus, spindle, feed, laser, tray, etc..) Initializes FL display.
T SKIP Backward traverse move. (If inner SW turns on, traverse is stopped.)
(Coefficient set up mode: upper digit down.)
Y SKIP Forward traverse move.
(Coefficient set up mode: upper digit up.)
DISC 1 Returns to product mode. (Tray and table inoperative.)
DISC 2 Adjustment mode 1 (TR-offset, FO-offset, FO-rough gain adjustment.)
DISC 3 Adjustment mode 2 (TR-balance, TR-rough gain adjustment.)
DISC 4 Adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment.)
DISC 5 (Note 1) Measure the rotating time of the table (rotate slow).

(Note 1) Measure the rotating time of the table (rotate fast/rotate slow).

1. Display for time mesurement.
The time display shows the time for 1 rotation of the table.
The unit of time is 0.1 second (rotate fast) or 1 second (rotate slow).




Clockwise
Counter clockwise

2. When the disc table is not positioned correctly, be sure to turn the disc table one full rotation by using the "DISC
SKIP q " or "DISC SKIP w " keys on the remote control unit before canceling the TEST mode.
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13
CDC-697




· Function List of Remote Control Transmitter
CUSTOM CODE = (79)x
Code Key Function
00 MODE Traverse stop.
01 OPEN/CLOSE Tray open/close.
02 PLAY PLAY (FOON, TRON, TVON (FEON), SPON)
04 T SKIP Backward traverse move. (If inner SW turns on, traverse is stopped.)
(Coefficient set up mode: upper digit down.)
05 E SEARCH Clamp down.
(Coefficient set up mode: lower digit down.)
06 R SEARCH Clamp up.
(Coefficient set up mode: lower digit up.)
07 Y SKIP Forward traverse move.
(Coefficient set up mode: upper digit up.)
08 REPEAT FOON, TROF (Enter focus search if focus servo is off.)
0A TEXT/TIME (Note 2) Checks FL display.
0B INDEX FOON, TROF, TVOF (FEOF) (Enter focus search if focus servo is off.)
0C PROG Rotates or accelerates spindle.
0D CLEAR Decelerates spindle.
10 0 Backward 150 TRACK KICK continuously.
11 1 Returns to product mode. (Tray and Table inoperative.)
12 2 Adjustment mode 1 (TR-offset, FO-off set, FO-rough gain adjustment.)
13 3 Adjustment mode 2 (TR-balance, TR-rough gain adjustment.)
14 4 Adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment.)
15 5 Forward 1 TRACK KICK continuously.
16 6 Backward 1 TRACK KICK continuously.
17 7 Forward 30 TRACK KICK continuously.
18 8 Backward 30 TRACK KICK continuously.
19 9 Forward 150 TRACK KICK continuously.
1A +10 Enter coefficient set up mode.
1B RANDOM SPON (Spindle servo on.)
1C OUTPUT LEVEL ­ Output level down.
(Coefficient set up mode: address down.)
1D OUTPUT LEVEL + Output level up.
(Coefficient set up mode: address up.)
1E DIMMER (Note 2) Checks FL display.
4F DISC SKIP w DISC SKIP + (Clockwise)
50 DISC SKIP q DISC SKIP ­ (Counterclockwise)
53 DISC SCAN (Note 1) Measure the rotating time of the table (rotate fast).
55 PAUSE FOON, TROF, TVOF (FEOF) (Enter focus search if focus servo is off.)
56 STOP All stop. (Focus, spindle, traverse, laser, tray, etc..)
57 TAPE Spindle free. (off)
58 SYNCHRO Backward traverse move.
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14
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(Note 2) Checks FL display.




DIMMER




TEXT/TIME




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15
CDC-697




I ERROR MESSAGES
When stopped by any cause, press "STOP" key of the remote control while pressing and holding the "STOP" key on the
main unit. The operation mode turns to the mode allowing the display of messages.
The unit hold the latest error message in microprocessor. So even if stopped with no error, the unit can display the latest
error massage with same operation.

Error * Meaning of each state ("x"):
Description
message (x = 0) PLAY
E ­x 0 Data cannot be read after finishing search. (x = 2) SCAN
E ­x 1 Data cannot be read during PLAY (x = 0), PAUSE (x = 3) or SCAN (x = 2). (x = 3) PAUSE
E ­7 1 At the start, tracking servo is not effective. (x = 4) PEAK SEARCH
E ­7 2 At the start, spindle servo PLL is not effective. (x = 5) SEARCH
E ­7 3 At the start, data can not read. (x = 6) DISC SCAN
E ­x 4 Close switch does not work with tray closed. (x = 7) START
E ­x 5 Open switch does not work with tray opened. (x = 8) STOP
E ­x 6 Table does not turn. (x = 9) DISC SEARCH
E ­x 7 Traverse (Feed) inner circumference switch does not work. (x = ­) EJECT
E ­x 8 Recovery action fails after focus drop. (x = C) NO DISC
E ­x 9 Clamp down switch does not work.
E ­x A Clamp up switch does not work.
E rr IC3 does not give response of SENSE, with resetting by the microprocessor.




1) Error Code Troubleshooting.
Error codes x0 , x1 , 73 ... Data cannot de read. Error code x6 .......................... Poor table rotation.


Motor defective.
Is disc dirty or YES Check by using NO
Does tray rotate in Drive circuit defective.
scratched? another disc.
TEST mode? DISC Microprocessor (IC309)
SKIP defective.
NO
YES
TRACKING servo
Outermost defective. Tray sensor defective.
Pick-up position Microprocessor (IC309)
(on mirror FEED servo
surface) defective. defective.

Within disc range

Pick-up defective, spindle system
defective. (Motor fails to run, etc.)




Error codes x4 , x5 ... Poor tray loading operation. Error code x7 ................ FEED operation defective.
(FEED LIMIT switch fails.)


Does tray "OPEN/CLOSE" key Is forced feed FEED LIMIT switch
operate when YES (SW322) detection poor. YES defective.
operation available
"OPEN/CLOSE" key is Microprocessor (IC309) in TEST Microprocessor
Y ...Outward
pressed? defective. mode? (IC309) defective.
T ...Inward
NO
NO
FEED servo defective.
Motor defective. Microprocessor (IC309)
Microprocessor (IC309) defective.
defective.
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16
CDC-697



Error code x8 ..................................... Focus drops. 2) Troubleshooting from system malfunc-
tions.
YES Check by using
a) Tray fails to come out/go in.
Is disc dirty or
scratched? another disc.


NO Tray starts to YES Poor mechanism operation.
move but stops. Wire caught.
TRACKING servo Loose gear, etc.
Outermost
Pick-up position defective.
NO
(on mirror FEED servo
surface) defective.
Is output
Within disc range YES
available at LOADING Motor defective.
terminal?
FOCUS servo defective.
Pick-up defective.
NO


YES Microprocessor
Error codes x9 , xA ............ Poor clamp operation. FLSW = "L"
(IC309) defective.


Is pick-up NO
YES
caught and locked by Malfunction of tray-table.
disc table? FEED LIMIT switch defective.
FEED servo system defective.
NO Microprocessor (IC309) defective.


Is clamp Motor defective.
NO Control IC (IC401) defective.
operation available in
TEST mode? Microprocessor (IC309) b) No sound generated, sound cut during play.
defective. (but time display advanced properly)
"E"...Clamp down
"R"...Clamp up
YES Mute control circuit
LOADING switch detection YES defective.
Muting applied.
poor. Microprocessor (IC309)
Microprocessor (IC309) defective.
defective.
NO

Audio amplifier defective.
(IC101 and IC102)
IC1 or IC3 defective.




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17
CDC-697



c) Operates as if no disc loaded. d) Sound skips.
(although loaded) (Time display fails to advance properly)


Does table NO Is disc dirty, Check by using a
Poor table rotation. YES
rotate properly? scratched or known good disc.
warped?

YES
NO
Infrared sensor defective. Poor mechanism
Is table position NO
Microprocessor (IC309) accuracy.
sensor normal? Is disc or disc
defective. YES Floating rubber/spring
stabilizer in contact with
deformed.
mechanism?
YES Pick-up connector
assembly caught.
Disc clamp defective. NO
Does disc clamp NO CLAMP switch defective.
operate properly? Microprocessor (IC309) TRACKING servo system defective.
defective. FEED servo system defective.
FOCUS servo system defective.
YES Pick-up defective.

Is pick-up at NO FEED LIMIT switch
innermost position?
defective.
e) No search provided.
YES
(Sound skipped after search)


Is FOCUS NO FOCUS servo system Is disc dirty, YES Check by using a known
lock done? defective. scratched or good disc.
warped?
YES
NO
TRACKING servo system
Does spindle NO SPINDLE servo system Is TER YES defective.
motor run? defective. waveform normal? FEED servo system defective.
FOCUS servo system defective.
Pick-up defective.
YES NO

IC1 or IC3 defective.
Is EFM signal NO
Jitter defective.
normal?

YES

IC1 or IC3 defective.
Microprocessor (IC309)
defective.
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18
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I IC DATA
IC3 : MN35511AL (MAIN P.C.B.)
Signal processor and controller




DEMPI/TEST2
CLVS/FLAG6
SMCK/FCLK




PCK/RESY




DEMPO




CLDCK
BLKCK
SBCK2
MDATA
CK384




IOSEL




LRCKI
SUBQ
SQCK




SDATI
VCOF




MCLK




SUBC

SBCK
AVDD

AVSS
XSEL




DSLF

PLLF
STAT




BCKI
IREF




CRC
MLD




EFM
DRF
ARF
X1
X2
17 58 59 56 19 49 69 8 7 9 44 46 45 47 48 52 53 67 62 15 14 20 68 73 72 74 75 13 55 70 78 80 79 77

VDD 60
VSS 57
DVDD1 4 TIMING DSL · PLL VCO SUBCODE
BUFFER
DVSS1 5 GENERATOR VCO DIGITAL DE-EMPHASIS
/RST 18 PITCH CONTROL
/TEST 71
A/D CONVERTER




8 TIMES
EFM DEMODULATION OVER SAMPLING
FE 32
SYNC INTERPOLATION
TE 33 DIGITAL FILTER
MICRO COMPUTER SUBCODE DEMODULATION
INTERFACE
RFENV 34 PLL
61 VCOF2
VCO 2


DD type
INPUT PORT




TRCRS 37 CIRC ERROR CORRECTION DAC
SERVO 16k
DE INTERLEAVE
VDET 35 CPU SRAM
PEM PEM
BDO 39 (L) (R)


INTERPOLATION
SOFT MUTING