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13

8

screw (PTPWH3 

×

 8)

0

roller (L)

9

Raising the stable lock (L/R) Ass’y simultaneously 
in the arrow 

D

 direction, remove the base unit (DVBU4) 

from the chassis (outseat).

Note: The stable lock (L/R) Ass’y will attempt to 

return in the reverse direction of arrow 

D

 

by a spring force. Therefore, take care not
to break the shaft of stable lock (L/R) Ass’y 
when removing the stable lock (L/R) Ass’y 
from the base unit (DVBU4).

stable lock (R) ass’y

stable lock (L) ass’y

In removing the optical pick-up (KHM-230AAA/J1NP) 
after removing the base unit (DVBU4), 
perform the optical pick-up (KHM-230AAA/J1NP) removal
procedure after step 5 on page 12.

chassis (outseat)

D

D

1

two claws

1

two claws

S002

S001

cover (CAM)

2

Up the SWITCH board in the
direction of arrow 

A

.

Note: Take care not to break the shaft of 

the switch (S001, S002) when raising 
the SWITCH board.

A

C

B

4

limiter (L)

3

screw
(BVTT3 

×

 6)

5

screw
(BVTT3 

×

 6)

6

limiter (R)

7

Insert a taper driver into the cover (CAM), 
and rotate in the arrow 

B

 direction to raise 

the base unit (DVBU4) in the arrow 

C

 direction.

(Chuck release state)

14

MEMO

15

15

Note on Printed Wiring Board:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•

b

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

• Main board is multi-layer printed board.

However, the patterns of intermediate-layer have not been
included in diagram.

• Indication of transistor

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF

50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in 

Ω

 and 

1

/

4

 

W or less unless otherwise

specified.

•

f

: internal component.

•

5

: fusible resistor.

•

C

: panel designation.

•

U

: B+ Line.

•

V

: B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.
no mark : CD PLAY (ANALOG OUT)
(

) : SACD PLAY

〈〈

 

〉〉

: CD PLAY (DIGITAL OUT)

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-
tion tolerances.

• Circled numbers refer to waveforms.
• Signal path.

J

: SACD PLAY

c

: CD PLAY (ANALOG OUT)

I

: CD PLAY (DIGITAL OUT)

Note: The components identified by mark 

0

 or dotted line

with mark 

0

 are critical for safety.

Replace only with part number specified.

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Q

POWER board

DIGITAL OUT board

LINE OUT board

AC board

MAIN board

POWER SWITCH board

R. CNTL board

HEADPHONE board

JOG board

KEY board

DISPLAY board

AUDIO board

RF board

SWITCH board

LOADING MOTOR board

not supplied

16

16

Ref. No.

Location

D001

B-5

D002

B-4

IC001

D-4

IC004

F-3

IC081

C-1

Q001

B-4

Q002

C-3

Q003

B-3

Q005

B-4

There are a few cases that the part isn't mounted in model
is printed on diagrams.

S002

(LOADING OUT)

05

CN001

OUT

OFF

S001

(LOADING IN)

OFF

IN

M1

(LOADING)

TO

RF BOARD

M

M

1

SWITCH BOARD

LOADING MOTOR BOARD

C001

1-641-764-

11

(12)

1-641-765-

11

(12)

5

1

(Page 18)