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IC801 (AUDIO DAC)

7

8

12
11

DIGITAL
AUDIO OUT

JK1201

AMP

Q1351

Q1203

Q1201

Q1202

VREF

+3.3V

(AMP)

CN701

CN1601

CN701

CN1601

16

16

AUDIO-L

18

18

AUDIO-R

15

15

A-L-MUTE

17

17

A-R-MUTE

19

19

A-MUTE

AUDIO-L
OUT

1
2
3

13
14
15

16

FROM
VIDEO
BLOCK
DIAGRAM

SERIAL

PORT

SERIAL

CONTROL

4X/8X

OVERSAMPLING

DIGITAL FILTER

/FUNCTION

CONTROLLER

ENPHANCED
MULTI-LEVEL

DELTA-SIGMA

MODULATOR

DAC

LPF+AMP

L-CH

R-CH

LPF+AMP

DAC

ZERO DETECT

SYSTEM CLOCK

1

2

6

7

5

AUDIO-R
OUT

PCM-BCK

SPDIF

PCM-DATA0
PCM-LRCLK

ADAC-MD
ADAC-MC
ADAC-ML

PCM-SCLK

AUDIO SIGNAL

DATA(AUDIO) SIGNAL

21

21

SPDIF

A-MUTE

+3.3V

Q1204

3

JK1404

1

3

AUDIO-L
OUT

AUDIO-R
OUT

1-9-9

1-9-10

E56H0BLA

Switching power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, check to see that all components in the
power supply circuit are not defective before you connect the AC plug to
the AC power supply. Otherwise it may cause some components in the
power supply cir cuit to fail.

    A     V

AC1001

AC CORD

F1001

T1.6A L 250V

LINE

FILTER

L1001

D1001, D1002
D1004, D1005

Q1003

Q1008

Q1001

2

4

7

3

4

ERROR
VOLTAGE DET

T1001

11

12

13

15

14

16

17

18

-FL

EV+3.3V

F1

F2

P-ON+5V

P-ON+3.3V

P-ON+12V
EV+5V

(SHUNT REGULATOR)

SWITCHING

D1008

D1030

RECTIFIER

D1003

RECTIFIER

D1009

RECTIFIER

D1013

D1016

RECTIFIER

SWITCHING

CONTROL

SWITCHING
CONTROL

REG

1

2

6

BRIDGE

RECTIFIER

 +1.8V

REG.

1
2
3
4
5
6

14
15
16
17
18
19
20

P-ON+1.8V
P-ON+1.8V

 EV+2.5V
 EV+2.5V

P-ON+5V
P-ON+5V

 EV+9V
 EV+9V

  EV+3.3V

 P-ON+3.3V

PWRCON

 P-ON+3.3V
 P-ON+3.3V

5V

REG. 

   

Q1014

Q1006

Q1002

CN1001

Q1011

Q1005

Q1004

Q1007

REG

(SHUNT REGULATOR)

E56H0BLP

1-9-12

1-9-11

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE T1.6A  L  250V FUSE.

NOTE : 
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

SCHOTTKY

BARRIER

SCHOTTKY

BARRIER

1-10-1

SC-FN2

Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics often
pass unnoticed and the protection afforded by them
cannot necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc.
Replacement parts that have these special safety
characteristics are identified in this manual and its
supplements; electrical components having such
features are identified by the mark " ! " in the schematic
diagram and the parts list. Before replacing any of these
components, read the parts list in this manual carefully.
The use of substitute replacement parts that do not
have the same safety characteristics as specified in the
parts list may create shock, fire, or other hazards.

(B)

(F)

±10%

+30 - 80%

±15%

+30 - 80%

20

°C

20

°C

20

°C

20

°C

-25~+85

°C

-25~+85

°C

-25~+85

°C

-10~+70

°C

(SR)

(Z)

Capacitors and transistors are represented by the
following symbols.

1. Do not use the part number shown on these draw-

ings for ordering. The correct part number is shown
in the parts list, and may be slightly different or
amended since these drawings were prepared.

2. All resistance values are indicated in ohms (K=10

3

,

M=10

6

).

3. Resistor wattages are 1/4W or 1/6W  unless other-

wise specified.

4. All capacitance values are indicated in 

µF

(P=10

-6

 

µF).

5. All voltages are DC voltages unless otherwise speci-

fied.

6. Electrical parts such as capacitors, connectors, di-

odes, IC's, transistors, resistors, switches, and fuses
are identified by four digits. The first two digits are
not shown for each component. In each block of the
diagram, there is a note such as shown below to
indicate these abbreviated two digits.

(Top View) (Bottom View)

(Bottom View)

Electrolytic Capacitor

+

Transistor or Digital Transistor

NPN Transistor

PNP Transistor

NPN Digital Transistor

PNP Digital
Transistor

(Top View)

(Top View)

E C B

E    C    B

Digital Transistor

CBA Symbols 

Schematic Diagram Symbols 

E C B

(Top View)

(Top View)

E C B

E C B

1-10-2

SC-FN2

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE.

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.

If Main Fuse (F1001) is blown, first check to see that all components in the power supply circuit are not defective
before you connect the AC plug to the AC power supply.  Otherwise it may cause some components in the power
supply circuit to fail.

(1) Do not use the part number shown on the drawings for ordering.  The correct part number is shown in the parts

list, and may be slightly different or amended since the drawings were prepared.

(2) To maintain original function and reliability of repaired units, use only original replacement parts which are listed

with their part numbers in the parts list section of the service manual.

4. Wire Connectors

(1) Prefix symbol “CN” means “connector” (can disconnect and reconnect).

(2) Prefix symbol “CL” means “wire-solder holes of the PCB” (wire is soldered directly).

5. Voltage indications for PLAY modes on the schematics are as shown below:

2

3

1

 5.0

PLAY mode

5.0

Unit: Volts

Indicates that the voltage
is not consistent here.

6. How to read converged lines

1-D3

   Distinction 

Area

 Line 

Number

(1 to 3 digits)

 Examples:

  1. "1-D3" means that line number "1" goes to area "D3".
  2. "1-B1" means that line number "1" goes to area "B1".

 

3

2

1

A

B

C

D

1-B1

1-D3

AREA D3

AREA B1

7. Test Point Information

: Indicates a test point with a jumper wire across a hole in the PCB.

: Used to indicate a test point with a component lead on foil side.

: Used to indicate a test point with no test pin.

: Used to indicate a test point with a test pin.