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MINIDISC RECORDER

MDX-E300 SERVICE MANUAL
For the system operation of MDX-E300, please refer to Service Manual #100805 for the CRX-E300/NX-E300.




M J model M R, G, B model




MDX-E300
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 inherant 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 all 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 parts replacement. Recheck all work before you apply power to the unit.




100806
MDX-E300




I CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . 2­3 TROUBLESHOOTING 36­45
PREVENTION OF ELECTRO STATIC DISCHARGE . . . . . . 4 IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46­55
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 56­57
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 TEST POINT WAVEFORMS . . . . . . . . . . . . . . . . . . . 58
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 59­62
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 MD VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
DISASSEMBLY PROCEDURES 7­8 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 63­64
DISASSEMBLY OF MD RECORDER UNIT DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9­11 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66­77
ADJUSTMENT & TEST MODE GREASE APPLICATION DIAGRAM . . . . . . . . . . . . 78
12­29 REMOTE CONTROL TRANSMITTER . . . . . . . . . . . 79
SPECIAL TEST MODE 30­31 PARTS LIST FOR CARBON RESISTORS . . . . . . . 80
ERROR DISPLAY 32­35




I TO SERVICE PERSONNEL
1. Critical Components Information AC LEAKAGE
Components having special characteristics are marked Z WALL EQUIPMENT TESTER OR
and must be replaced with parts having specifications equal OUTLET UNDER TEST EQUIVALENT
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
from supply circuits. INSULATING
TABLE
G Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
MDX-E300




G Leakage current must not exceed 0.5mA.

G Be sure to test for leakage with the AC plug in both
polarities.
THE MINI DISC RECORDER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED
SERVICE PERSONNEL.


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.




2
MDX-E300



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 of the MD recorder unit 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 set, 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
manual. Adjustment of this control can increase the laser emission level from the device.


Laser Diode Properties
Magnetic head
Material : GaAlAs
Wavelength : 785 nm
Emission duration : Continuous
Pulse Durations and Max. Output at the lens of the Laser Pick Up Unit ;
Read mode : 0.6 mW (Continuous)
Write mode : Max 10 mW for 0.5s, Min. Cycle 1.5s




MDX-E300
ANSI Class : Class 1
* This output is the value measured at a distance of about 200 mm from
the objective lens surface on the Optical Pick-up Block. 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.


R, G, B models






R, G, B models





3
MDX-E300



I PREVENTION OF ELECTRO STATIC DISCHARGE
The laser diode in the MD recorder unit (optical pickup) may be damaged due to static electricity from clothes or the
human body. Use caution to prevent electrostatic damage when servicing or handling the laser diode.


1. Grounding for electrostatic damage prevention
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 strip
1M
Conductive material
(sheet) or steel sheet


2. Handling of the optical pickup
Do not use a tester to check the laser diode in the optical pickup. The power supply in the tester will damage the
laser diode.

3. Handling Precautions for the MD recorder Unit (Optical Pickup)
1. Handle the MD recorder unit (optical pickup) 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.
MDX-E300




I REAR PANELS

M R model M G model




M B model M J model




4
MDX-E300



I SPECIFICATIONS
Digital audio system GENERAL
System Power Supplies
MiniDisc digital audio system G, B models 230 V, 50 Hz
Disc R model 110/120/220/240 V, 50/60 Hz
MiniDisc J model 100 V, 50/60 Hz
Recording method Power Consumption
Magnetic field variation overwrite R, G, B models 12W
Reading method J model 11W
Non-contact optical pickup (using semiconductor laser) Dimensions (W x H x D)
Laser 217 x 88 x 297 mm (8-9/16" x 3-7/16" x 11-11/16")
Semiconductor laser Weight
Record/playback time 2.6 kg (5 lbs. 11 oz.)
Max. 80 min. (on stereo) Finish
Max. 161 min. (on ATRAC3-LP2) Silver color B, G, J models
Max. 323 min. (on ATRAC3-LP4) Gold color R, G models
Revolutions Accessories
Approx. 400-900 rpm (CLV) Remote Control.... 1
Error Correction Audio Pin Cable... 2
ACIRC (Advanced Cross Interleave Reed-solomon Code) Optical Cable... 1
Sampling frequency Batteries (AA, R6, UM-3).... 2
44.1 kHz (32 kHz and 48 kHz signals converted to 44.1 kHz
Specifications subject to change without notice.
for recording)
Coding B : British model
ATRAC (Adaptive TRansform Acoustic Coding) G : European model
Modulation system R : General model
EFM (Eight-to-Fourteen Modulation) J : Japanese model
Number of channels




MDX-E300
2 (stereo) or 1 (mono, for extended recording)
Frequency Response
5 - 20,000 Hz ±0.5 dB
Signal-to-Noise Ratio
More than 99 dB during playback
Wow and Flutter
Below measurable limit


Inputs
LINE IN (REC)
Type: pin jack
Input impedance: greater than 50 k-ohms
Standard input level: 300 mV
DIGITAL IN (OPTICAL) 1/2
Type: square optical connector jack


Outputs
LINE OUT (PLAY)
Type: pin jack
Standard output level: 2.0 ± 0.5 Vrms
DIGITAL OUT (OPTICAL)
Type: square optical connector jack




5
MDX-E300



I DIMENSIONS




(1/2")
12
275 (10-13/16")

297 (11-11/16")
(3/8")
10
80 (3-1/8")

88 (3-4/16")
(5/16")



217 (8-9/16")
Unit : mm (inch)
8
MDX-E300




I INTERNAL VIEW

q w e




q MAIN (3) P.C.B.
w MAIN (4) P.C.B.
e MAIN (1) P.C.B.
r MD RECORDER UNIT
t MAIN (2) P.C.B.


r t




6
MDX-E300



I DISASSEMBLY PROCEDURES
Remove parts in disassembly order as numbered.

1. Removal of Top Cover
Remove 4 screws ( q ) and 4 screw ( w ) in Fig. 1. q w

2. Removal of Front Panel
a. Remove 2 connectors (CB6, CB602) in Fig. 2.
b. Remove 2 screws ( e ) and 2 screws ( r ) in Fig. 1. e r
c. Detach the 2 hooks in Fig. 1 and then pull the Front
Panel forward.

3. Removal of MD Recorder Unit
a. Remove 1 connector (CB1) in Fig. 2.
b. Remove 4 screws ( t ) in Fig. 1. t
c. Remove the MD Recorder Unit.




Top Cover
w


w

q
w




MDX-E300
q
MD Recorder Unit




t
Front Panel


Hook


e
CB1



t

Hook

e CB602
CB6
r Fig. 1




Fig. 2



7
MDX-E300



G Service Position G
a. Remove 2 screws (y) in Fig. 3. y
b. Remove 2 screws (u) in Fig. 4. u
c. Remove the Main (1) P.C.B. from the chassis.
d. Place the Main (1) P.C.B. and Main (4) P.C.B. as shown
in Fig. 5 for servicing.

When checking the P.C.B.:
Be sure to connect the ST1 of the Main (4) P.C.B. to the
chassis with a jumper wire or the like.



Cloth




y
Chassis




MAIN (1)




MAIN (4)
MDX-E300




ST1
Fig. 3
Fig. 5




u



u

Fig. 4




8
MDX-E300



I DISASSEMBLY OF MD RECORDER UNIT

Remove the MD Recorder unit according to Steps 1 and 3
of the disassembly procedure.

Removal of MD Main P.C.B. and MD Mechanism (Fig. 6)
1. Remove 3 screws (K1) and then remove the Top
Cover.
2. Remove 2 screws (K2) and then remove the Bottom
Cover.
3. Disconnect 3 flat connecting cables (K3).
4. Disconnect the flexible P.C.B. for the optical pickup
(K4).
5. Disconnect a connector (K5).
6. Remove 2 screws (K6) and then remove the MD
Main P.C.B.
7. Remove the spring (K7).
8. Remove 1 screw (K8) and then remove the Side
Cover. (K1)x1
ø2x 3mm
9. Remove 4 cushions (K9) from the bosses of the MD
Mechanism. (K1)x1
ø2x 3mm


Top Cover

(K1)x1
ø2x 3mm
MD Mechanism


Boss




MDX-E300
(*1) After pulling off the
flexible P.C.B. for the optical
Boss
pickup from the connector, Cushion
cover its end with aluminum (K9)x2
Spring
foil or the like which is
(K7)x1
electrically conductive so as
to prevent the optical pickup (K8)x1
ø2x 3mm
from being
damaged by static electricity.




Cushion
Side Cover (K9)x2
MD Main P.C.B.
(K3)x2
(K3)x1


(K5)x1



Pull (K6)x2
ø1.7x 3mm
Pull
(K4)x1 (K2)x1
Flexible P.C.B. for optical pickup (*1) ø2x 3mm




Bottom Cover
(K2)x1
ø2x 2mm



Fig. 6


9
MDX-E300



Removal of Magnetic Head (Fig. 7)
· Once the magnetic head is removed, it will be neces-
sary to perform "Confirmation of magnetic head
installation Position". (See page 26.)

Remove screw (A1).
Caution
a. When removing the magnetic head, hold its base and
do not touch the magnetic head itself or the leaf
spring.
b. Place the magnetic head upside down.
c. Use special care so as not to cause any damage to
the magnetic head when installing it.




Removal of MD Loading P.C.B./Loading Motor (Fig. 8)


1. Remove 1 screw (B1).
2. Remove 3 hooks (B2) and then remove the MD
Loading P.C.B.
3. Remove 2 screws (B3) and then remove the Loading
Motor.
MDX-E300




Loading Motor (B1)x1
Magnetic Head ø1.7x 6mm
(A1)x1
ø1.7x 5mm
Leaf Spring
MD Loading P.C.B.

MD Mechanism




(B2)x1

(B2)x2
(B3)x2
ø1.7x 3mm


Fig. 7
Fig. 8




10
MDX-E300



Removal of Sled Motor/Optical Pickup Head (Fig. 9)
· Once the MD mechanism switch P.C.B. is removed, it
will be necessary to perform "Adjustment of Lead-in
Switch Position". (See page 26.)
· Once the optical pickup head is removed, it will be
necessary to perform "Confirmation of magnetic head
installation Position". (See page 26.)


1. Remove 3 screws (C1) and then remove the sled
motor.
2. Remove the Optical Pickup Head.



Caution
Use care so as not to cause any damage to the gear.
(A damaged gear will cause abnormal noise to occur
while searching.)




Removal of Spindle Motor (Fig. 10)
· Once the spindle motor is removed, it will be neces-
sary to perform "Pickup Rating". (See page 28.)


Remove 3 screws (D1) and then remove the Spindle
Motor.




MDX-E300
Caution
a. Be careful not to scratch the gear.
(Scratched gear will produce noises during searching.)
b. As the turn-table is magnetized, keep foreign objects
from being attracted.




Optical Pickup Head (C1)x1
ø1.4x 5mm
(C1)x2
ø1.4x 4.5mm
(D1)x3 Spindle Motor
ø1.4x 3mm
Sled Motor



MD Mechanism P.C.B.




Fig. 10

Fig. 9


11
MDX-E300



I ADJUSTMENT & TEST MODE

Servicing Procedure
Perform adjustment and setup in the TEST mode. Specific adjustments and procedures vary depend-
ing on the type of servicing performed.

Required item
Type of servicing TEMP standard EEPROM setting AUTO preliminary AUTO AUTO AFB EEPROM adjustment Operation confirmation
setting value confirmation adjustment adjustment adjustment value entry (*1) (With AUTO main adjustment done in advance)
TEMP EEPROM SET AUT YOBI AUTO AJST AUT AFB TEST mode cancel TEST-PLAY TEST-REC
PICKUP replacement ­ q w e r t y u
Magnetic head replacement ­ ­ ­ ­ ­ ­ ­ q
Mechanical unit replacement ­ q w e r t y u
(including PICKUP)
MD main PCB replacement q w e r t y u i
MD microprocessor (IC1401) ­ q ­ _ _ w e r
replacement
MD LSI (IC1201) replacement ­ _ q w e r t y
RF IC (IC101) replacement q w e r t y u i
EEPROM IC (IC1402) replacement q w e r t y u i

Numbers in the table, e.g., q, w, e, indicate the order in which required items should be performed.
"­" means that item needs not be performed.


(*1): The result of EEPROM entry is displayed at the end of the TEST mode.
OK_EEPROM: Both "setting value" and "preliminary adjustment completed" have been entered properly.
WR_EEPROM: The "setting value" has been entered properly but not "preliminary adjustment completed".
Perform preliminary adjustment properly and then enter "preliminary adjustment completed".
NG_EEPROM: The "setting value" has not been entered.
Check the MD microprocessor and EEPROM for connection.
MDX-E300




Preparation before Adjustment
G Test disc G Extension cable (see connection diagram on page 28.)

Type Test disc Type Part No.
High reflecting disc TDYS1 (SONY) [for reproduction] (P/No. TX945850) 1. Extension P.C.B. for servicing AAX16660
Low reflecting disc Commercially available mini disc for recording 2. 2-pin extension connector for servicing AAX16620
Low reflecting disc MMD-318 [for pre-adjustment] (P/No. AAX04890) 3. 6-pin flat cable for servicing AAX16640
­­­­­­­­ Clear disc for checking the head (P/No. AAX18050) 4. 5-pin flat cable for servicing TX946190
5. 28-pin flat cable for servicing TX946220




12
MDX-E300




MDX-E300




13
MDX-E300



TEST MODE
1. How to enter the test mode
1) Press the "STANDBY/ON" button while pressing the " a " button and the "INPUT" button and then release your
hingers from those buttons.
"EJECT" is displayed.

2) Load either a disc for reproduction or a disc for recording.
"AUTO AJST" is displayed.




2. How to set to each mode
Every time the DISPLAY (forward) or EDIT (reverse) button on the remote control unit is pressed, the mode changes.
(For operation of each mode, refer to the section describing each mode.)



AUTO_AJST (AUTO adjustment)
@
AUT_AFB (AUTO AFB adjustment)
@
RST_YOBI (RESULT preparation)
@
RESULT (RESULT)
@
Since this mode is not required for servic- MNU_YOBI (MANUAL preliminary adjustment)
@
ing , proceed to another mode promptly.
MNU_AJST (MANUAL adjustment)
@
*
EEPROM_SET (EEPROM setting)
@
MDX-E300




AUT_YOBI (AUTO preliminary adjustment)
@




3. How to cancel test mode (Entry of EEPROM adjustment value)
1) Be sure to perform AUTO preliminary adjustment, AUTO adjustment and AUTO AFB adjustment.
( "COMPLETE" is displayed.)
2) After completing above ajustments, press the REC/PAUSE button (REMOCON). (Entry to EEPROM initiates then.)
The TEST mode is completed. ( "Test End" is displayed.)
3) Press the " v " button to take out the disc.
4) Turn off the power.




14
MDX-E300




"a" " " " "




AUTO­AJST

AUT­AFB

RST­YOBI

RESULT

MNU­YOBI

MNU­AJST

EEPROM­SET




MDX-E300
AUT­YOBI




Test End
"v"




15
MDX-E300




Details of Test Mode
1. EJECT mode
Step Setting method Remark Display
1 EJECT status in the TEST mode EJECT menu (No disc is loaded.) [ _ _ EJECT _ _ _ ]
2 Press the INPUT button (REMOCON). Reproduction power output status [ ppw _ _ _ _ _ _ _ ]
3 Press the INPUT button (REMOCON). Recording power output status [ rpw _ _ _ _ _ _ _ ]
4 Press the INPUT button (REMOCON). Since this mode is not required for servicing , proceed to another mode promptly. [ xpw _ _ _ _ _ _ _ ]
5 Press the TITLE edit button (REMOCON). To TEMP setting [ TEMP _ _N N]
(Refer to TEMP setting)
6 Press the CHARA. button (REMOCON). To CONTROL1 setting [ CONTROL1 _ 08 ]
7 Press the DISPLAY button (REMOCON). To CONTROL2 setting [ CONTROL2 _ 02 ]
8 Press the DELETE/CANCEL button (REMOCON). EJECT menu [ _ _ EJECT _ _ _ ]

Check item
Check procedure Mode Judgement Possible cause and check content
(Pin 3 of IC1401)
q Playback power output "ppw" DC 0.2V OK (Move on to check w.) ­
DC 1.5V NG Perform *1.
w Recording power output "rpw" DC 1.8V OK (End of checking.) ­
Less than DC1.5V NG Perform *2.
"rpw" not achieved. ­ NG Perform *1.

*1: Poor soldering of the line at Pin 100 of IC1401.
Check the line of Pin 93 of IC1401 for short and poor soldering. (Check all the way to the SW P.C.B.)
*2: Check the line of Pin 3 of IC1401 for poor soldering and short with other patterns.
Check the pick-up laser for breakage.


G Confirmation of pick-up laser power G TEMP (temperature standard) setting
Recording and reproduction can be checked by using the (Make this setting quickly when the room tempera-
ture is within the range of 21 °C to 29 °C and the
laser power meter. However it should be used for check-
P.C.B. is cold.)
MDX-E300




ing only because there is variation in its measurement.
(1) Set to the TEMP setting mode menu.
When the measured value is excessively deviated from [ TEMP N N ]
the reference value, replace the pick-up. : Temperature measured value
Reference value (measured at room temperature of N N : Temperature setting value
25 °C) (2) Make temperature correction based on the ambient
During reproduction (ppw) : 0.72 ± 0.1 mW temperature and according to the following table.
During recording : 5.5 ± 0.5 mW Ambient temperature Correction value
Note : Be very careful when using the laser power meter. + 21.0 °C ~ + 23.2 °C ­ 1H
The laser beam would cause damage to your eye if + 23.3 °C ~ + 26.8 °C ± 0H
exposed to it directly. + 26.9 °C ~ + 30.7 °C + 1H

Example : When the temperature measured value is 7AH
and the ambient temperature is 22 °C:
7AH (measured value) - 01H (correction value) = 79H (setting value)
* If the temperature measured value deflects between two val-
ues, use the smaller value (If 7AH and 79H in the above ex-
ample, use 79H.)

(3) Using the jog dial, match the value obtained in Step
(2) with the temperature setting value.
Example : When the temperature measured value is 7AH
and the ambient temperature is 22 °C:
[ TEMP 7A 79 ]
Temperature setting value




(Jog dial)


16
MDX-E300




MDX-E300




17
MDX-E300



2. AUTO preliminary adjustment mode Disc in use: MMD-318 [for pre-adjustment]

Step Setting method Remark Display
1 Set the Test mode. No disc is loaded. [ EJECT ]
2 Load a disc. [ LOADING ]
Auto adjustment menu [ AUTO _ AJST _ ]
3 Press the EDIT button (REMOCON) once. Auto preliminary adjustment menu [ _ AUT _ YOBI _ ]
4 Press the SET/ENTER button Auto preliminary adjustment is started after sliding to the [ *** : _ _ _ _ _ _ ]
(REMOCON) once. innermost track.
" *** " changes in the following order during automatic
adjustment.
Adjusted values are output. HAo -> ................. -> TCO
Adjustment is completed. Proceed to Step 5 when adjustment is OK. [ _ COMPLETE _ ]
Proceed to Step 6 when adjustment is NG. [ Can't _ ADJ. ]
5 When adjustment is OK, press the
DELETE/CANCEL button (REMOCON). The display returns to the AUTO preliminary adjustment menu. [ _ AUT _ YOBI _ ]
6 When adjustment is NG, press the There is an abnormality at the adjusted point such as HAo. [ Can't _ ADJ. ]
DELETE/CANCEL button (REMOCON). Refer to "Troubleshooting". (page 36)



3. AUTO adjustment mode Disc in use: TDYS1 (SONY) [for reproduction] or commercially available
mini disc for recording

Step Setting method Remark Display
1 Set the TEST mode. No disc is loaded. [ EJECT ]
2 Load a disc. [ LOADING ]
AUTO adjustment menu [ AUTO _ AJST _ ]
3 Press the SET/ENTER button Automatic adjustment is started after sliding to the innermost [ *** : _ _ _ _ _ _ ]
(REMOCON) once. track.
" *** " changes in the following order when a high reflecting disc
MDX-E300




(disc for reproduction) is used.
PEG -> HAG
" *** " changes in the following order when a low reflecting disc
(disc for recording) is used.
Adjusted values are output. PEG -> LAg -> GCG -> GEG -> LAG
Adjustment is completed. Proceed to Step 4 when adjustment is OK. [ _ COMPLETE _ ]
Proceed to Step 6 when adjustment is NG. [ Can't _ ADJ. ]
4 When adjustment is OK, press the
SET/ENTER button (REMOCON). Continuous reproduction (bit section) (Address + C1 error display) [ s XXXX c YYYY ]
Continuous reproduction (group section) (Address + C1 error display) [ a XXXX c YYYY ]
5 Press the INPUT button. Continuous reproduction (group section) (Address + ADIP error display) [ a XXXX a YYYY ]
Press the DELETE/CANCEL button (REMOCON). Display returns to the AUTO adjustment menu display. [ AUTO _ AJST _ ]
6 When adjustment is NG, press the There is an abnormality at the adjusted point such as PEG. [ Can't _ ADJ. ]
DELETE/CANCEL button (REMOCON). Refer to "Troubleshooting". (page 36)
Note) *** : Adjustment name, XXXX: Address, YYYY: Measured value


4. AUTO AFB adjustment mode Disc in use: Commercially available mini disc for recording

Step Setting method Remark Display
1 Set the Test mode. No disc is loaded. [ EJECT ]
2 Load a disc. [ LOADING ]
Auto adjustment menu [ AUTO _ AJST _ ]
3 Press the DISPLAY button (REMOCON) once. Auto AFB adjustment menu [ _ AUT _ AFB _ _ ]
4 Press the SET/ENTER button (REMOCON) once.Auto AFB adjustment is started. [ FAB YY _ ZZZZ ]
Adjusted values are output. [ YY _ ZZZZ _ _ _ ]
5 Press the DELETE/CANCEL button (REMOCON). The display returns to the AUTO AFB adjustment menu. [ _ AUT _ AFB _ _ ]

Note) YY, ZZZZ: Measured value



18
MDX-E300




MDX-E300




19
MDX-E300



5. EEPROM setting mode Disc in use: Commercially available mini disc for recording
(used to confirm/adjust setting values)
1) Start the TEST mode.
2) Load the disc.
[AUTO AJST]
3) Press the DISPLAY button (REMOCON) 6 times.
[EEPROM SET]
4) Execute the procedure to have "EEPROM setting mode transition diagram" displayed and adjust
the jog dial so that the same setting values as those in "EEPROM contents list" are obtained.
(Refer to p.16 for TEMP setting.)
5) Press the REC/PAUSE button (REMOCON) to cancel the TEST mode.
(Entry into EEPROM can be started here.)
6) Set to the TEST mode again and perform AUTO preliminary adjustment, AUTO adjustment and
AUTO AFB adjustment.


EEPROM SETTING MODE TRANSITION DIAGRAM
MDX-E300




Note) To return to the SUB MENU or MAIN MENU display of the test mode, press the DELETE/CANCEL button.


20
MDX-E300



EEPROM CONTENTS LIST

G Focus setting (Focus) G Slide setting (Sled)
Item on display Set value Item on display Set value
FG B1 H SLG 3E H
FF0 10 H SL2 10 H
FF1 70 H SLDLIM 7F H
FF2 E0 H SLDLEV 12 H
FZHLEV ED H SLKLVk 55 H
FOKLEVh 07 H SLKLVt 2E H
FOKLEVL 09 H SLKLVm 55 H
FOSTn 2C H SLBKm 08 H
DISCJG 14 H SLKrio 60 H
SLKroi 68 H
SLK1io 68 H
G Spin setting (Spindle) SLK1oi 60 H
Item on display Set value
SPG 10 H
SPG-in 5C H G Control setting (Control)
SPG-mid 48 H
Item on display Set value
SPG-out 38 H
CONTROL1 08 H
SP1 10 H
CONTROL2 02 H
SP2 93 H
ADJTTM 14 H
SP3 ED H
HDEQAD 92 H
SP4 EE H
LDEQAD 8E H
SP5 20 H
GDEQAD 91 H
SPDLIM 64 H
MDEQBC 8C H
SPKLEVm 15 H
LDEQBC 8F H
GDEQBC 8A H
HALSG 11 H
G Tracking setting (Tracking)
LALSG




MDX-E300
11 H
Item on display Set value GALSG 11 H
TG 6B H HALSOFS FC H
TF0 10 H LALSOFS 00 H
TF1 6B H GALSOFS 00 H
TF2 F0 H
FT3 08 H
SVCNT4 01 H
G Adjust setting (ADJSET)
TRBLVo 68 H
TRBLVt 50 H Item on display Set value
TRKLVo 60 H COK 58 H
TRKLVt 2E H FAT C0 H
TDPWo 67 H TAT 3E H
TDPWt 21 H CAT 40 H
SLCTo 00 H FAB 5C H
SLCTt 50 H STR 0B H
SLCTm 53 H SFS 0D H
TCRSC1P 16 H STC 0D H
TCRSC0h 00 H
TCRSC0L FA H
TCRSCHh 02 H
TCRSCHL 02 H
COTLVP 05 H
COTLVr 15 H
JPint 00 H
KIK10 64 H




21
MDX-E300
MDX-E300




22
MDX-E300




G G




G


G




G




MDX-E300
G




23
MDX-E300



6. TEST-PLAY mode Using the disc: Commercially available mini disc for recording
(Use this mode to check that the playback function is provided at the specified address.)

Step Setting method Remark Display
1 Load a disc. AUTO adjustment menu [ AUTO _ AJST _ ]
2 Press the TITLE button (REMOCON). TEST-PLAY menu [ TEST _ PLAY _ ]
3 Press the INPUT button (REMOCON). ADDRESS setting (The initial value of the target address is displayed.) [ ADRES _ 0032 ]
4 Continuous reproduction (bit section) (Address + C1 error display)
Press the SET/ENTER button (REMOCON). [ s XXXX c YYYY ]
Continuous reproduction (group section) (Address + C1 error display) [ a XXXX c YYYY ]
5 Press the INPUT button (REMOCON). Continuous reproduction (group section) (Address + ADIP error display) [ a XXXX a YYYY ]


6 Press the DELETE/CANCEL button (REMOCON). TEST-PLAY menu [ TEST _ PLAY _ ]

· Every time the TITLE button (REMOCON) is pressed in the address setting mode, the address changes in the order of 0032-> 03C0 ->
0700 -> 08A0 -> 0950 -> --
· Pressing the DISPLAY button (REMOCON) in the TEST-PLAY menu changes to the AUTO adjustment menu.



7. TEST-REC mode Disc in use: Commercially available mini disc for recording
(It is used to check the REC function at the specified address.)

Step Setting method Remark Display
1 Load a disc. AUTO adjustment menu [ AUTO _ AJST _ ]
2 Press the TITLE button (REMOCON) twice. TEST-REC menu [ TEST _ REC _ _ ]
3 Press the SET/ENTER button (REMOCON). ADDRESS setting (The initial value of the address is displayed.) [ a0032 _ pw ZZ ]
4 Press the SET/ENTER button (REMOCON). Continuous recording [ a XXXX _ pw ZZ ]


5 Press the DELETE/CANCEL button TEST-REC menu [ TEST _ REC _ _ ]
(REMOCON).

· Every time the TITLE button (REMOCON) is pressed in the address setting mode, the address changes in the order of 0032-> 03C0 ->
MDX-E300




0700 -> 08A0 -> 0950 -> --
· Pressing the DISPLAY button (REMOCON) in the TEST-REC menu changes to the AUTO adjustment menu.



8. INNER mode Disc in use: Commercially available mini disc for recording

Step Setting method Remark Display
1 Load a disc. AUTO adjustment menu [ AUTO _ AJST _ ]
2 Press the CHARA. button (REMOCON). INNER menu [ _ _ INNER _ _ _ ]
3 Press the SET/ENTER button (REMOCON). INNER switch position is measured. [ s XXXX c YYYY ]
(Both SUBQ address and C1 error are displayed.)
4 Press the DELETE/CANCEL button (REMOCON). INNER menu [ _ _ INNER _ _ _ ]
· Pressing the DISPLAY button (REMOCON) in the INNER menu changes to the AUTO adjustment menu.




24
MDX-E300




MDX-E300




25
MDX-E300



G Lead-in switch position adjustment
Adjust the lead-in switch position so that it is between FF85 and FFD2.
1. Load a TDYS1 (SONY) (P/No. TX945850) disc for reproduction.
2. Loosen the screw (A1) (1 pc) attaching the mechanical switch P.C.B.
3. Retighten the screw (A1) (1 pc) while pressing the mechanical switch P.C.B in the arrow A direction in the figure for
FF85 or less and in the arrow B direction for FFD2 or more.
Measure the lead-in switch position again and check that it is in the range between FF85 and FFD2.



A
B



Note) Apply thread lock to the screw (A1) (1 pc) of
the P.C.B. after tightening it.
(A1) X1


Fig. 11

G Forced rotation of loading motor
It is possible to force the loading motor to rotate by turning the jog dial when the microprocessor version (tsm22**e**)
of the test mode or EJECT appears on display. (This is used when the disc cannot be ejected.)

JOG DIAL y : Forced feeding of the disc to EJECT
JOG DIAL t : Forced feeding of the disc to LOAD
MDX-E300




* To obtain the microprocessor version on display when a disc is loaded, " AUTO _ AJST _ " appears on display. Press
the DELETE/CANCEL button (REMOCON) in this state, and the microprocessor version will appear.

Version of microprocessor t s m 2 2 * * e * *
Version of EEPROM protect data (from 01)
Version of microprocessor ROM (from 01)



G Confirmation of magnetic head installation position
· After replacing the magnetic head and the optical pick-up, be
sure to confirm their installation positions.