DOWNLOAD Sony HCD-M70 Service Manual ↓ Size: 4.13 MB | Pages: 53 in PDF or view online for FREE

Model
HCD-M70
Pages
53
Size
4.13 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-m70.pdf
Date

Sony HCD-M70 Service Manual ▷ View online

3
HCD-M70
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.
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! 
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 dur-
ing 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.
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
...............................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
6
3-2. Panel (Side) (L), Panel (Side) (R) ..................................
7
3-3. Top Panel Section ............................................................
7
3-4. Mechanical Deck (Tape) .................................................
8
3-5. Front Panel Section .........................................................
8
3-6. Back Panel Assy ..............................................................
9
3-7. MAIN Board ...................................................................
9
3-8. CD Mechanism Deck (CDM55F-K6BD41A) ................ 10
3-9. Base Unit (BU-K6BD41A) ............................................. 11
3-10. Loading Board ................................................................. 11
3-11. Cam (CDM55) ................................................................ 12
4.
TEST  MODE
.............................................................. 13
5.
ELECTRICAL  ADJUSTMENTS
Deck Section ................................................................... 13
CD Section ...................................................................... 13
6.
DIAGRAMS
6-1. Block Diagram  – CD SERVO Section – ....................... 14
6-2. Block Diagram  – TUNER/TAPE DECK Section – ...... 15
6-3. Block Diagram  – MAIN Section – ................................ 16
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 17
6-5. Printed Wiring Board  – CD Board – ............................. 18
6-6. Schematic Diagram  – CD Board – ................................ 19
6-7. Printed Wiring Board  – TC Board – .............................. 20
6-8. Schematic Diagram  – TC Board – ................................. 21
6-9. Schematic Diagram  – MAIN Board (1/2) – .................. 22
6-10. Schematic Diagram  – MAIN (2/2)/JACK Boards – ...... 23
6-11. Printed Wiring Boards  – MAIN/JACK Boards – .......... 24
6-12. Printed Wiring Boards
– CONTROL/LOADING/VIDEO Boards – .................. 26
6-13. Schematic Diagram  – CONTROL/LOADING/
SWITCH (1/2)/VIDEO Boards – ................................... 27
6-14. Printed Wiring Board  – SWITCH Board – ................... 28
6-15. Schematic Diagram  – SWITCH Board (2/2) – ............. 29
6-16. Printed Wiring Board  – POWER Board – ..................... 30
6-17. Schematic Diagram  – POWER Board – ........................ 31
6-18. IC Pin Function Description ........................................... 34
7.
EXPLODED  VIEWS
7-1. Panel (Side) Section ........................................................ 36
7-2. Front Panel Section ......................................................... 37
7-3. Top Panel Section ............................................................ 38
7-4. Chassis Section-1 ............................................................ 39
7-5. Chassis Section-2 ............................................................ 40
7-6. CD Mechanism Deck (CDM55F-K6BD41A) ................ 41
7-7. Base Unit (BU-K6BD41A) ............................................. 42
8.
ELECTRICAL  PARTS  LIST
............................... 43
4
HCD-M70
SECTION  1
SERVICING  NOTES
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  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
MODEL  IDENTIFICATION
– Rear Panel –
SERVICE POSITION
In checking the CD block, prepare jig (extension cable J-2501-
011-B: 1.25 mm Pitch, 19 cores, Length 300 mm).
Part No.
Model Name
Part No.
AEP and UK models
4-238-716-0
[]
US and Canadian models
4-238-888-0
[]
Singapore model
4-238-889-0
[]
Mexican model
4-239-812-0
[]
Australian model
4-240-890-0
[]
Korean model
4-240-891-0
[]
Thai model
4-240-892-0
[]
Connect jig (extension cable J-2501-011-B)
to the control board (CN805) and CD board (CN101). 
control board (CN805)
CD board (CN101) 
Any box to put.
In checking the tape deck section, prepare jig (extension cable J-
2501-167-A: 1.25 mm Pitch, 17 cores, Length 300 mm).
TC board (CN301)
main board (CN301)
Connect jig (extension cable J-2501-167-A)
to the main board (CN301) and TC board (CN301).
5
HCD-M70
5
GB
Remote Control
CD REPEAT qk (8)
CD 
N ws (8, 9)
DIR MODE ql (12–14)
DISPLAY 2 (11, 16)
DSG 1 (15)
ENTER qd (7, 10, 14, 15, 17)
FM MODE 9 (11)
FUNCTION qj (8–14, 18)
MEMORY qh (10)
SLEEP qf (16)
TAPE 
nN w; (12–14)
TIMER SELECT qs (15, 17)
TIMER SET qg (7, 14, 17)
TUNER/BAND wa (9–11)
TUNING MODE/PLAY MODE
q; (8–11, 14)
VOL +/– qa (17)
BUTTON DESCRIPTIONS
X 4 (8, 12, 14)
x 5 (8, 9, 12–14)
./> 6 (7–10, 14, 15, 17)
m/M 7 (8–12)
@/1 (power) 3 (7, 15, 17)
z REC 8 (13)
ALPHABETICAL ORDER
A – M
S – V
1
2
3
8
5
6
4
9
0
qa
qs
qd
qj
qk
qh
qg
qf
ql
w;
wa
ws
7
4
GB
How to use this page
Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.
Illustration number
r
PLAY MODE qg (9, 13, 14)
R
R
Name of button/part
Reference page
List of Button Locations and Reference Pages
Main unit
ALPHABETICAL ORDER
A – F
CD disc tray 9 (8)
CD SYNCHRO qa (13, 14)
CD SYNCHRO indicator w; (14)
CD 
N 7 (8, 9)
CD 
X 7 (8)
DIRECTION q; (12–14)
Display window 2
DSG qk (15, 18)
FUNCTION ql (8–14, 18)
PHONES jack qf
PLAY MODE/TUNING MODE
qd (8–11, 14)
Remote sensor 4
REPEAT/FM MODE qs (8, 11)
TAPE 
nN qj (12–14)
TAPE 
X qj (12–14)
TUNER AM  qg (9–11)
TUNER FM  qg (9–11)
TUNING +/– 3 (9–11)
VOLUME  +/– 6 (17)
P – V
BUTTON DESCRIPTIONS
@/1 (power) 1 (7, 10, 15, 17)
m/M 3 (8, 12)
l/L 3 (8, 9, 14)
x 5 (8, 12, 13)
Z CD 8 (8)
z REC qh (13)
Z
x
nN
N
?/1
lm
ML
z
X
X
1
3
5
ql
6
7
4
8
9
2
0
qa
qs
qd
qf
qh
qg
qk
qj
w;
SECTION  2
GENERAL
This section is extracted from
instruction manual.
Setting the clock
1
Turn on the system.
2
Press TIMER SET on the remote.
3
Press 
.
/
>
 on the remote
repeatedly to set the hour.
4
Press ENTER on the remote.
The minute indication flashes.
5
Press 
.
/
>
 on the remote
repeatedly to set the minute.
6
Press ENTER on the remote.
The clock will begin operating.
To adjust the clock
1
Press TIMER SET on the remote.
2
Press 
. or > on the remote to select
“SET CLOCK”, then press ENTER on the
remote.
3
Do the same procedures as step 3 to 6
above.
HCD-M70
6
SET
3-2. PANEL (SIDE) (L),
PANEL (SIDE) (R)
(page 7)
3-3. TOP PANEL SECTION
(page 7)
3-4. MECHANICAL DECK (TAPE)
(page 8)
3-5. FRONT PANEL SECTION
(page 8)
3-6. BACK PANEL ASSY
(page 9)
3-7. MAIN BOARD
(page 9)
3-8. CD MECHANISM DECK
(CDM55F-K6BD41A)
(page 10)
3-9. BASE UNIT (BU-K6BD41A)
(page 11)
3-10. LOADING BOARD
(page 11)
3-11. CAM (CDM55)
(page 12)
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY  FLOW
SECTION  3
DISASSEMBLY
Page of 53
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Sony HCD-M70 Service Manual ▷ Download

  • DOWNLOAD Sony HCD-M70 Service Manual ↓ Size: 4.13 MB | Pages: 53 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HCD-M70 in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-M70 Audio. Information contained in Sony HCD-M70 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.