DOWNLOAD Sony MCE-SV7 / MHC-SV7AV Service Manual ↓ Size: 6.4 MB | Pages: 52 in PDF or view online for FREE

3

...............................................

4

...................................................................

5

3-1. Disassembly Flow ...........................................................

6

3-2. Cover ...............................................................................

7

3-3. CD Mechanism Deck (CDM63B) ..................................

7

3-4. MAIN Board ...................................................................

8

3-5. Front Panel Section .........................................................

8

3-6. PANEL Board, SUB PANEL Board ...............................

9

3-7. Lid (CD) ..........................................................................

9

.............................................................. 10

CD Section ...................................................................... 11
VIDEO Section ............................................................... 11

6-1. Block Diagram  – CD SERVO Section – ....................... 12
6-2. Block Diagram  – AUDIO/VIDEO Section – ................ 13
6-3. Block Diagram  – MAIN Section – ................................ 14
6-4. Note For Printed Wiring Boards

and Schematic Diagrams ................................................ 15

6-5. Printed Wiring Board  – BD Section – ........................... 16
6-6. Schematic Diagram  – BD Section – .............................. 17
6-7. Printed Wiring Boards

– CD CHANGER Section – ............................................ 18

6-8. Schematic Diagram  – CD CHANGER Section – ......... 19
6-9. Printed Wiring Boards  – AUDIO/VIDEO Section – ..... 20
6-10. Schematic Diagram

– AUDIO/VIDEO Section (1/3) – .................................. 21

6-11. Schematic Diagram

– AUDIO/VIDEO Section (2/3) – .................................. 22

6-12. Schematic Diagram

– AUDIO/VIDEO Section (3/3) – .................................. 23

6-13. Printed Wiring Boards  – MAIN Section – .................... 24
6-14. Schematic Diagram  – MAIN Section – ......................... 25
6-15. Printed Wiring Boards  – PANEL Section – .................. 26
6-16. Schematic Diagram  – PANEL Section – ....................... 27
6-17. IC Pin Function Description ........................................... 32

7-1. Cover, Front Panel Section ............................................. 41
7-2. Chassis Section ............................................................... 42
7-3. CD Mechanism Deck Section-1 (CDM63B) .................. 43
7-4. CD Mechanism Deck Section-2 (CDM63B) .................. 44
7-5. Base Unit Section (BU-30BD61A) ................................ 45

............................... 46

4

This set is a component of the MHC-SV7AV.
The MHC-SV7AV system configuration is as shown below, and
therefore it does not operate normally unless all four components
are connected.
In performing the repair, connect all components with the system
cables.
Note: The precaution to the users is described on the label stuck
on the back panel (Video CD player) and in the troubleshooting
section in the Operation Manual.

POWER SUPPLY

AC IN

TA

HTC & VMP 

µ

con

MASTER & GRAPHIC 

µ

con

ST

MCE

TC 

µ

con

TC

DISPLAY

This unit is able to display the test data (character information)
written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used
for checking the display.
To check, perform the following procedure.

1. Press the

/1

button to turn the power on, set the disc to the

disc table with the “test disc” label facing up, and chuck the
disc.

2. Press the 

[CD]

 button to set CD function, and press the

N

button to playback the disc.

3. The following will be displayed on the liquid crystal display.

Display : 1KHZ/0DB/L R

4. Pressing the 

[--        ]

 or 

[        +]

 button, select the track. The text

data of each track will be displayed.
For details of the displayed contents for each track, refer to “Table
1 : CD-TEXT TEST DISC TEXT Data Contents”.

In this unit, some special characters will not be displayed prop-
erly. These will be displayed as a space or a character resembling
it.

1

1kHz/0dB/L&R

2

20Hz/0dB/L&R

3

40Hz/0dB/L&R

4

100Hz/0dB/L&R

5

200Hz/0dB/L&R

6

500Hz/0dB/L&R

7

1kHz/0dB/L&R

8

5kHz/0dB/L&R

9

7kHz/0dB/L&R

10

10kHz/0dB/L&R

11

16kHz/0dB/L&R

12

18kHz/0dB/L&R

13

20kHz/0dB/L&R

14

1kHz/0dB/L&R

15

1kHz/–1dB/L&R

16

1kHz/–3dB/L&R

17

1kHz/–6dB/L&R

18

1kHz/–10dB/L&R

19

1kHz/–20dB/L&R

20

1kHz/–60dB/L&R

TRACK

No.

Displayed Contents

 Track No. 21 to 99 are not displayed.

.

>

5

This section is extracted from
instruction manual.

The items are arranged in alphabetical order.

Refer to the pages indicated in parentheses ( ) for details.

m

M

.

H

S

x

>

wk wle;

ea es

ed

ef

eh

ek

r;

eg

ej

el

ra

rs

DISC 1–3 rs (14, 16, 17, 25)
DISC 1–3 indicators ra
DISC 1–3 Z (eject) e; (14–16)
NEXT ek (14, 15)
PLAY MODE wk (14, 16, 17, 25)
PREV r; (14, 15)
REPEAT wl (15, 16)
RETURN O eh (15)
N SELECT (play) el (14–17,

19, 21, 34)

X (pause) ej (14, 16)
x (stop) eg (14–16, 19, 21, 24,

34)

. (go back) ef (14–17, 21,

25)

> (go forward) ed (14–17, 21,

25)

m (rewind) ea (14, 16)
M (fast forward) es (14, 16)

VIDEO CD/CD player

x

M

m

>

.

nN

nN

O

V

v

B

b

X

1 2 3 4 5

wh

wj

wl

ed

ea

6

7

9

8

q;

qa

qd

qs

qf

qg

qj

qh

qk

ql

wa

w;

ws

wf

wd

wg

wk

es

eg

ej

ek

el

e;

ef

eh

ra

rd

rg

r;

rs

rf

CHECK qd (17)
CLEAR qs (17, 19)
CLOCK/TIMER SELECT 3

(26, 35)

CLOCK/TIMER SET 2 (13, 25,

34)

DBFB ej (27)
DIGITAL r; (36, 40)
DISPLAY rd (13, 18, 33, 40)
D.SKIP 9 (14, 16, 20, 21)
ENTER wf (11, 13, 15, 17, 21,

22, 25, 26, 30–33, 35)

EQ wh (31)
EQ ON/OFF wa (32)
FILE SELECT +/– wd (27, 28,

32)

FUNCTION el (10, 14–17, 24,

25, 34, 36)

GROOVE ek (27)
KARAOKE PON qk (33)
KEY CONTROL  /  ql (33)
MD rs (36)
Numeric buttons 8 (15, 16, 19,

20, 21)

ON SCREEN wk (18)
PICTURE EFFECT wl (21)
PRESET –/+, PREV/NEXT ea

(14, 15, 20, 22)

REPEAT q; (15, 16)
RETURN O eg (15)
PLAY MODE qa (14, 16, 17, 25)
SELECT CD N es (14–17, 19,

21)

SET UP w; (11, 13, 30, 32, 33)
SLEEP 1 (34)
SPECIAL MENU e; (19, 20, 21)
SPECTRUM ANALYZER rf

(33)

SUR wj (30)
TAPE A nN ef (23)
TAPE B nN qf (23, 24)
TUNER/BAND ed (22)
TUNING –/+ qh (22)
TV CH +/– 7 (10)
TV VOL +/– 6 (10)
TV @/1 4 (10)
TV/VIDEO rg (10)
VIDEO ra (36)
VOL +/– ws

@/1 (power) 5
X (pause) qj
x (stop) qg
./> (go back/go forward)

ea

m/M (rewind/fast forward)

qh

O/o/P/p wg
 >10 eh

6

• This set can be disassembled in the order shown below.

3-2. COVER

(Page 7)

3-3. CD MECHANISM DECK

(CDM63B)
(Page 7)

3-6. PANEL BOARD,

SUB PANEL BOARD
(Page 9)

3-7. LID (CD)

(Page 9)

3-5. FRONT PANEL SECTION

(Page 8)

3-4. MAIN BOARD 

(Page 8)

SET