MICROFILM
SERVICE MANUAL
MINI DISC DECK
AEP Model
UK Model
MDS-EX880
E Model
Tourist Model
MDS-MS717
Model Name Using Similar Mechanism
HCD-MD515
MD Mechanism Type
MDM-C1C
Optical Pidk-up Name
KMS-260A/J1N
SPECIFICATIONS
MDS-EX880/MS717
MDS-EX880/MS717 are the mini disc
deck section in DHC-EX880MD/MD717.
U.S and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
Photo: MDS-MS717
2
This set can display the error history using the self disagnostic
function.
1.
OPERATING THE ERROR HISTORY MODE
All operations are performed using the [
=
SELECTOR
+
]
dial and [PROGRAM] button.
1. Enter the test mode. (*1)
2. Turn the [
=
SELECTOR
+
] dial and display "ERR
DP MODE".
3. Press the [ENTER/YES] button, therefor enter the error his-
tory mode and change the display "total rec".
4. Press the [MENU/NO] button, therefor end the error history
mode and change the display "ERR DP MODE".
(*1) See the "SECTION 4 TEST MODE" (page 11) for detail
of test mode.
2.
OPERATING THE DISPLAYED HISTORYS
1. Turn the [
=
SELECTOR
+
] dial and change the dis-
play of error history contents.
2. Press the [PROGRAM] button and display error history func-
tion.
3. Press the [PROGRAM] button again and back the display of
error history contents.
Table 1 shows the history items and description.
Table 1.
(*2) For the desciption of each error, refer to Table 1-1.
(*3) If err refresh is performed, the error history data are all erased.
Only when "OP Replacement" was executed, perform this
operation to clear the error history data, otherwise, never per-
form this operation.
Display
Description
(History items)
total rec
Recording time (total hours of laser high
power. About 1/5 of actual recording
time) is displayed with "r
h".
total play
Playing time (total hours of actual play-
ing time. Pause is not counted) is dis-
played with "p
h".
retry err
Total retry counts of recording (r) and
playing (p) are displayed with "r
p
".
total err
Total error count is displayed with "total
".
err history
Errors from last one "00" up to previous
10th error "09" are displayed with "0
E
". (*2) (To select error No., use
[
=
SELECTOR
+
] dial.)
er refresh?
err refresh (*3)
Press [REC IT] button, and "Complete!"
is displayed and the error history are all
erased.
Table 1-1.
Display
Description
(error No./code)
0
E00
No error
0
E01
Disc error PTOC does not read
0
E02
Disc error UTOC does not read
0
E03
Loading error
0
E04
Address does not read
0
E05
Out of FOK
0
E06
Focus does not work
0
E07
Retry of record
0
E08
Record retry error
0
E09
Retry of Playback
0
E0A
Playback retry error
SELF DIAGNOSTIC FUNCTION
3
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
Notes on chip component replacement
· Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
· Keep the temperature of the soldering iron around 270 °C during
repairing.
· Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
· Be careful not to apply force on the conductor when soldering or
unsoldering.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED
LINE WITH MARK
! ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
SECTION 1
SERVICING NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ................................ 2
1.
SERVICING NOTES ............................................... 3
2.
GENERAL ................................................................... 5
3.
DISASSEMBLY ......................................................... 6
4.
TEST MODE .............................................................. 11
5.
ELECTRICAL ADJUSTMENTS ......................... 14
6.
DIAGRAMS
6-1. Block Diagram MD SERVO Section ....................... 19
6-2. Block Diagram MAIN Section ................................. 21
6-3. Printed Wiring Boards BD Section ......................... 24
6-4. Schematic Diagram BD Section ............................... 27
6-5. Schematic Diagram MAIN Section .......................... 32
6-6. Printed Wiring Board MAIN Section ....................... 37
6-7. Printed Wiring Boards
MOTOR/SENSOR Section ....................................... 39
6-8. Schematic Diagram
MOTOR/SENSOR Section ....................................... 41
6-9. Printed Wiring Boards PANEL Section ................... 43
6-10. Schematic Diagram PANEL Section ........................ 45
6-11. IC Pin Function Description ........................................... 55
7.
EXPLODED VIEWS ................................................ 65
8.
ELECTRICAL PARTS LIST ............................... 70
CAUTION
: INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
ADVARSEL : USYNLIG LASERSTRÅLING VED ÅBNING NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE
FOR STRÅLING.
VORSICHT : UNSICHTBARE LASERSTRAHLUNG, WENN
ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
VARO
!
: AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-
TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING
: OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD
OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
ADVERSEL : USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.
VIGYAZAT
! : A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-
GÁRVESZÉLY
! KERÜLJE A BESUGÁRZÁST!
4
POWER SUPPLY DURING SERVICING
· As this set has not own power supply, it does not operate inde-
pendently. Therefore, during servicing, connect it to the Pre-Main
amplifier Unit (TA-EX880/MS717) of DHC-EX880MD/MD717.
Also, connect the Tuner Unit (ST-EX880/MS717) because the
POWER switch is not provided to the Pre-Main amplifier Unit
(TA-EX880/MS717).
If TA-EX880/MS717 and ST-EX880/MS717 are not available,
use the Power Feed Jig (PFJ-1).
In this case, turn on the POWER switch on the Power Feed Jig,
then press
p button and [DISPLAY] button on the set simul-
taneously, so that the power is supplied.
Connection:
AGING MODE
In the AGING mode, the MD operation can be checked.
· If an error occurs:
The aging operation stops.
· If no error occurs:
The aging operation continues repeatedly.
1. Operating Method for AGING Mode with the system power
turned on, press the [POWER] button while pressing the
[MENU/NO] button and [STEREO/MONO] button on the Tuner
Unit (ST-EX880/MS717) simultaneously, so that the AGING
mode becomes active.
To exit from the AGING mode, press the [POWER] button,
and turn off the power.
Set
Pre-Main AMP
Unit
(TA-EX880/MS717)
Tuner Unit
(ST-EX880/MS717)
AC IN
AC IN jack
Connector cable (17P)
(attached to the set)
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
AC plug cord
Power feed jig
(PFJ-1)
P707, 909
CDP/TC
CN308 (17P)
SYSTEM CONTROL terminal
Set
Connector cable (17P)
5
SECTION 2
GENERAL
LOCATION OF CONTROLS
· Front view
· Rear view
1 SHUFFLE button
2 CONTINUE button
3 DISC SKIP button
4 REPEAT button
5 DIGITAL IN, ANALOG IN, MONO indicators
6 REC LEVEL knob
7 MD 1 to 3 indicators
8 Disc slots door (PUSH OPEN)
9 § button
0 Disc stots
!¡ MD 1 to 3 buttons
!TM REC 1 to 3 buttons
!£ = SELECTOR + knob
!¢ ENTER/YES button
! MENU/NO button
!§ p button
!¶ fl button
!· Fluorescent indicator tube
!ª 0, and ), buttons
@º REC IT button
@¡ CD SYNC button
@TM DISPLAY button
@£ PROGRAM button
1 ANALOG IN terminal
2 ANALOG OUT terminal
3 OPTICAL DIGITAL IN, CD PLAYER terminal
4 OPTICAL DIGITAL IN, VIDEO 1 terminal (MDS-EX880)
4 OPTICAL DIGITAL IN, CS/BS terminal (MDS-MS717)
5 OPTICAL DIGITAL IN, VIDEO 2 terminal (MDS-EX880)
5 OPTICAL DIGITAL IN, LD/DVD terminal (MDS-MS717)
6 SYSTEM CONTROL terminal