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— 5 —

4

 Front panel assembly

3

 Four tapping screws

1

 Ornamental panel

2

 Two tapping screws

6

 Three tapping screws

!º

 Connector

(CN01)

7

 Nine screws

(BVTP 3X8)

5

 Ten tapping screws

9

 Three tapping screws

1

 Two tapping 

screws

2

 Two tapping screws

4

 Flexible flat cable

(CN152)

!¡

 Amplifier block

8

 Back panel (L)

3

 Display panel assembly

— 6 —

When the AC plug is inserted to the power outlet with pressing the
 MASTER VOL +  button, the all fluorescent indicator tubes light.

1. Pull out the AC plug from the power outlet and turn the power

OFF.

2. Connect the lead wire to TP3 on the KEY board.
3. Insert the AC plug to the power outlet and set to STANDBY

mode.

4. Let the lead wire connected in step 1 contact to the ground.
5. All fluorescent indicator tubes light, and enter the key check

mode.

6. Pressing any buttons, the number of button will be displayed on

the fluorescent indicator tube.

7. After all buttons are pressed, it will be in the STANDBY mode.

Note:
Set the transmitter to the user's environment, connect it to the front
speaker, and supply the power. (Refer to Service Note.)

TP5

TP6

Transmitter
board
R226

frequency counter

Procedure:
1. Connect the frequency counter to TP5 and TP6 of the two ends

of the resistor (R226) of the TRANSMITTER board.

2. Turn ON the power of the front speaker.
3. Adjust L201 of the TRANSMITTER board, and adjust so that

the reading of the frequency counter is 4.3 MHz ± 0.01 MHz.

Note:
Perform procedure 1 if using FM RF SSG and procedure 2 if not.
However, as procedure 2 is a simple procedure, adjustment is not
accurate.

TP7

TP8

Receiver
board
L1

FM RF SSG

level meter 

Receiver
board
TP102

Carrier frequency : 4.3MHz
Modulation

: no moduration

Output level

: 40dB (at 75 

Ω

 open)

Procedure:
1. Connect SSG to TP7 and TP8 of the two ends of the coil (L1) of

the RECEIVER board.

2. Set the output level of SSG to 40 dB.
3. Insert the AC plug of the unit to the power outlet and supply the

power.

4. Adjust IFT103 of the RECEIVER board, and adjust so that the

voltage of both ends of TP102 becomes 0V. (RECEIVING FRE-
QUENCY adjustment)

5. Adjust the output level of SSG to 22 dB.
6. Adjust RV102 until D109 turns green from red. (MUTING

LEVEL adjustment)

Button

Button Number

LED Color

POWER

MASTER VOL –

MASTER VOL +

INPUT

SURROUND

CTR MODE

S.WOOFER

2

3

4

5

6

7

8

Red

Green

Red

Green

Red

Green

Red

Note:
1. The LED (D505) lights while pressing each button.

The LED lights in red when even number of buttons are pressed,
and it lights in green when odd number of buttons are pressed.

2. The LED lights even when the pressed button is pressed again.

CN552

R557

TP3

S506

IC503

— 7 —

Reference Information:
For this adjustment, the reaching distance of the infrared rays in-
creases when the MUTING LEVEL (sensitivity) is raised, but if the
power of the front speaker is turned OFF, pop noises are produced
from the rear speaker.
If the MUTING LEVEL (sensitivity) is dropped on the other hand,
pop noises are reduced, but the reaching distance of the infrared
rays decreases.
Adjust according to the user's using environment.

CN201

IC202

R226

TP6

CARRIER FREQUENCY

TP5

L201

JW112

JW133

JW113

JW114

JW111

JW107

JW108

JW132

JW109

JW110

RECEIVING

FREQUENCY

&

MUTING

LEVEL

RECEIVING
FREQUENCY

MUTING
LEVEL

TP7

TP8

L1

RV102

IC104

IFT103

TP102

D1

JW115
JW116

JW117

JW118

JW119

JW120

JW122

JW121

SCN101

Note:
The adjustment results of this procedure differs according to the
distance between the transmitter and rear speaker.
Leave ample distance between the transmitter and rear speaker ac-
cording to the user's using environment when performing the ad-
justment.

Procedure:
1. Connect the transmitter to the front speaker and turn the power

supply on.

2. Adjust IFT103 of the RECEIVER board, and adjust so that the

voltage of the two ends of TP102 becomes 0V. (RECEIVING
FREQUENCY adjustment)

3. Adjust RV102 of the RECEIVER board of the rear speaker until

D109 turns green. (MUTING LEVEL adjustment)

4. Turn OFF the power turned on at STEP 1.
5. Check that D109 of the RECEIVER board of the rear speaker

becomes red.
If green, adjust RV102 so that it turns red, turn ON the power
again, and repeat from step 3.

6. After adjusting, check that D109 becomes red when the power

of the front speaker is turned OFF and it becomes green when
the power is turned ON.

— 8 —

TRANSMITTER board

LED board

RECEIVER board
(including 

p

A)

p

A

AMPLIFIER board

POWER SW board

T1 board

POWER FR board

DISPLAY board

KEY board

DOLBY board

P. S board

MAIN board

T2 board

(L-CH)

(L-CH)