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HT-SB400

2 – 1

While at the STANDBY mode (sensing ON or OFF mode) 
Press remote control :

SPORT --> MUTE --> CINEMA
# Note : Must be pressed within 3 sec

Version will be display on FL as below:-

B4 --> ** --> H --> zz

B4 = Model name,  SB400
** = Software version no.
H = Destination Code (u)
ZZ = Touch Key Version

After enter Test Mode version display, Press VOL UP button.

1. All LED and FL will light ON.
2. All LED and FL will become DIM by pressing DIMMER key on the remote control.
3. Touch key will not function at Test Mode.

While in Test Mode function, Press ON/STANDBY button to exit.

In case abnormal power detection has occurred, the unit will automatically enter to stand-by mode
ON/Standby LED willl be flashing as below:-

Unit enter Protect mode when irregular process occur on power supply line.

E1

Communication error between micom and WM8775

> Unplug AC cord and turn power ON again
> Check line connected between Micom and corresponding IC

E2

Communication error between micom and NJU-26040D

E3

Communication error between micom and STA333/
STA335

E4

Communication error between micom and CY8C20334

Flashing

Flashing

OFF

OFF

1 Frame

(Repeat)

HT-SB400

3 – 1

CD-ES700/CD-ES77

CD-ES700/CD-ES77

Service Manual

CD-ES700/CD-ES77

Market

E

 

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.
2. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing

the unit, be sure to rearrange the leads where they were before disassembling.

3. Check that all speaker cushions (refer items 218, 219, 220 and 232 on pages 7 and 8 of Parts Guide) are properly

sealed otherwise vibration noise will be very distinct at low frequency sound. 
Replace the cushions if they are found damaged during servicing.

1

Back Cabinet Assy

1. Wall Mount Bracket……

(A1)x2

1

2. Screw…………..……….

(A2)x2

3. Screw…………..……….
4. Screw…………..……….
5. Screw…………..……….

(A3)x8
(A4)x12
(A5)x3

2

Amplifier PWB

1. Screw……….…………..

(B1)x3

2

2. Socket…….………..

(B2)x2

3. Connector………………

(B3)x2

3

Power PWB

1. Main Chassis……….….

(C1)x1

2

2. Screw………….…….….

(C2)x2

3. Screw………….…….….

(C3)x8

4. Screw………………..…

(C4)x1

5. Connector………………. (C5)x3

4

Main PWB

1. Socket………….……….

(D1)x3

2

5

Display PWB

1. Screw………….……….

(E1)x5

2

6

Woofer (x2)

1. Duct Port Holder…….…

(F1)x2

3

2. Duct Port Assy…………

(F2)x2

3

3. Screw………….…….….

(F3)x12

3

2. Screw………….……….

(F4)x8

4

7

Speaker (x2)

1. Screw………….……….

(G1)x8

4

8

MTouch PWB

1. Display Panel Assy……
2. Screw………….……….

(H2)x6

(H1)x1

5

Back Cabinet Assy

Front Cabinet Assy

(A4)x6

M3x10mm

(A3)x4

M3.5x10mm

(A2)x1

M3.5x8mm

(A5)x3

M3x6mm

(A3)x4
M3.5x10mm

(A2)x1
M3.5x8mm

(A1)x1

Wall Mount Bracket

(A4)x6

M3x10mm

(E1)x5

M3x8mm

(D1)x3

(B2)x1

Amplifier PWB

(C3)x8

M3x10mm

(C4)x1

Special Screw

(C2)x2

M3x8mm

(C5)x3

(C1)x1
Main Chassis

(B2)x1

Main PWB

(B3)x2

Display PWB

Power PWB

(B1)x3

M3x8mm

Front Cabinet Assy

(A1)x1

Wall Mount Bracket

HT-SB400

3 – 2

TO REMOVE SPEAKER UNIT, PRESS THESE LOCKING TABS
TO RELEASE SPEAKER WIRES. 

SPEAKER UNIT

LOCKING TAB

LOCKING TAB

SPEAKER

WIRE

(F3)x6
M3x10mm

(F3)x6
M3x10mm

(G1)x2
M2.6x8mm

(F4)x2
M3x8mm

(F4)x2
M3x8mm

(F4)x2
M3x8mm

(F4)x2
M3x8mm

(G1)x2
M2.6x8mm

(G1)x2
M2.6x8mm

Woofer

Woofer

Woofer

Woofer

Speaker

Speaker

Speaker

Speaker

Front Cabinet Assy

Front Cabinet Assy

Display Panel Assy

Screwdriver

Important: 
Insert screwdriver (minus) into gap as shown
and pull to remove the display panel assy.

Front Cabinet Assy

MTouch PWB

(H2)x6

Special Screw

(H1)x1
Display Panel Assy

(F2)x1

Duct Port Assy

(F2)x1

Duct Port Assy

(F1)x1
Duct Port Holder

(F1)x1

Duct Port Holder

Front Cabinet Assy

(G1)x2
M2.6x8mm

HT-SB400

4 – 1

JK801 (SUB-WOOFER PRE-OUT)

XM601
36.864MHz

    +B5

AMP_12.0V

~

JK802 (LINE IN)

L

h

c

L

R

L

L

R

Rch

R

JK803 (AUDIO IN)

           ~

L

R

+B2

D805
LVL_DETECT

FROM AC

SK52B 5A/20V

V

0

.

5

A

R

O

T

P

A

D

A

DC IN 

12V 4A

   +B3           +B5

DZ801

   DZ805

5.6B

   13A

     +B2

+B2

    D802

           +B5

      +B1          +B3

D602

+B2

~

UNSW 3.3

D603

+B3

A_5.0V

+B3

+B1

D_3.3V

3

2

IC804

AP2213

IC803

LD1117AS33L

3

2

IC601

WM8775

28

1

25

24

6

14

16

7

AVDD
DVDD

17

8

9

IC602

NJU260409D

SRS TSHD

1

7

25

9

12

13

28

32

4

2

2

3

6

7

8

IC604

PST8227U

4

2

1

Q601

RESET

35

DC_RELAY

17

14

19

6

26

27

28

30

33

8

+B3

+B1

23

24

15

20

21

DC_RLY

44

43

SYS

PROTECT

Q803

XM603

32.768kHz

Q701

Q702

MICOM_UNSW

VREF

10

48

46

IC603

IXA248AW

SYSTEM

MICROCOMPUTER

IC805

AZ4558CME1L

1

4

18

21

Q804

Q602

17

20

22

3

5

8

VDD

1

10

11

14

16

~

2

4

5

2

1

3

10

11

~

~

1

2

6

8

7

47

50

16

22

24
25

IC806

LV5805

8

D801

3

38

D803