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9

4

rear cover 
(hinge)

1

Slide the knob (open) in the direction
of arrow 

A

, and open the LCD block 

in the direction of arrow 

B

.

A

LCD block

B

3

two claws

2

two screws
(P2

 

×

 

8)

rear cover 
(hinge)

3

front cover (hinge)

5

Lifting up the LCD block in 
the direction of arrow 

A

.

2

two connectors 
(CN105, 108)

1

A

2

connector 
(CN107)

2

connector 
(CN103)

4

two screws
(PS3

 

×

 

10)

4

two screws
(PS3

 

×

 

10)

10

5

eight screws
(BTP2

 

×

 

6)

6

screw
(PS2.6

 

×

 

6)

4

two connectors
(CN906, 907)

1

four screws
(B2

 

×

 

5)

2

rear case (LCD)

4

two connectors
(CN905, 908)

7

LCD board

3

flexible board 
(CN801)

4

connector 
(CN850)

1

two screws
(BTP2

 

×

 

6)

4

two screws
(BTP2

 

×

 

6)

5

two retainers 
(LCD)

2

two retainers (LCD)

6

liquid crystal display panel 
(LCD1)

front case (LCD) block

3

shield plate 
(LCD)

11

This set is able to setting the adjustment data, reset to factory default
and initialize the EEPROM (IC402 on the MONITOR board) in the
test mode.

1. Press the [POWER] button to turn the power ON.
2. While pressing the [VOL --]  and

.

buttons, press the

[RESET] button.

3. The set is enter the test mode and display as bellow figure.

If initial data is not written to the EEPROM (IC402 on the MONITOR
board) or data is clobbered, the set is not able to display normally
screen.

In the test mode, by pressing the [VOL --]  button at two seconds,
batch writing is possible of the initial data to EEPOM (IC402 on
the MONITOR board).

All operations are performed using the bellow buttons.

In the test mode menu screen, press the [MENU] button to select “8.
SOFT RESET (EXIT)”, and press the [REVERSE] button to release
the test mode.

In this mode, switch the signal format system to NTSC or PAL.

In this mode, change the data of adjustment data.
Enter this mode, it displays each adjustment item as follow.
1)

Com Gain

2)

Y Gain

3)

Black Limit

4)

White Limit

5)

R-Sub BRT

6)

B-Sub BRT

7)

R-Sub CONT

8)

B-Sub CONT

9)

Gamma 1

10) Gamma 2
11) VCO Free Run
12) PLL/V Pos
13) H Pos

This mode is not used in servicing.

In this mode, switch the frequency range of FM transmitter as
follow.
1) USA (88.3 to 89.9 MHz)
2) Japan (76.5 to 79.5 MHz)
3) Transmitter off

This mode is not used in servicing.

This mode is not used in servicing.

This mode is not used in servicing.

Releasing the test mode.

Display

T E S T   M O D E   M E N U
1 .   N T S C / P A L   S E L E C T
2 .   F O R   F A C T O R Y
3 .   L C D   S E T T I N G
4 .   F M   T R A N S M I T T E R
5 .   H E A T   P R O T E C T I O N
6 .   V O L T A G E   S E T U P
7 .   L O A D   D E F A U L T
8 .   S O F T   R E S E T ( E X I T )
                  D r e a m   S y s t e m   2 0 X X
                      V e r . 2 0 X X - X X - X X x

Button

Function

MENU

Select the item

REVERSE

Enter

VOL +

Up the data value

VOL 

−

Down the data value

12

1. Connect an oscilloscope or frequency counter to the TP802

and TP804 on the MONITOR board.

2. Check that the voltage between TP951 (

−) and TP952 (+) is

14.4 V. Press the [POWER] button to turn the power on.

3. Adjust the RV801 on the MONITOR board so that the value

of oscilloscope or frequency counter becomes 243 kHz 

±3

kHz.

1. Connect a digital voltmeter to the TP804 and TP807 on the

MONITOR board.

2. Check that the voltage between TP951 (–) and TP952 (+) is

14.4 V. Press the [POWER] button to turn the power on.

3. Adjust the RV803 on the MONITOR board so that the value

of digital voltmeter becomes 5.05 V 

±0.03 V.

– Vdd Voltage Check –

1. Connect a digital voltmeter to the TP804 and TP808 on the

MONITOR board.

2. Check that the voltage between TP951 (–) and TP952 (+) is

14.4 V. Press the [POWER] button to turn the power on.

3. Check that the value of digital voltmeter is 3.45 V 

±0.2 V.

– Vgh Voltage Check –

4. Connect the digital voltmeter to the TP804 and TP806 on the

MONITOR board.

5. Check that the value of digital voltmeter is 17.5 V 

±1.5 V.

– Vss Voltage Check –

6. Connect the digital voltmeter to the TP804 and TP805 on the

MONITOR board.

7. Check that the value of digital voltmeter is –12.0 V 

±1.5 V.

1. Connect a digital voltmeter to the TP601 and TP602 on the

MONITOR board.

2. Check that the voltage between TP951 (–) and TP952 (+) is

14.4 V. Press the [POWER] button to turn the power on.

3. Adjust the RV601 on the MONITOR board so that the value

of digital voltmeter becomes 2.4 V 

±0.15 V.

– High Voltage Check –

1. Connect a digital voltmeter (for withstand high voltage) to the

TP853 and TP854 on the MONITOR board.

2. Check that the voltage between TP951 (–) and TP952 (+) is

14.4 V. Press the [POWER] button to turn the power on.
(DIMMER: off)

3. Check that the value of digital voltmeter is 550 V 

±150 V

(rms).

– Frequency Check –

4. Connect an oscilloscope (use a probe for withstand high

voltage) to the TP853 and TP854 on the MONITOR board.

5. Check that the frequency of oscilloscope is 66 kHz 

±2.5 kHz.

1. Connect a frequency counter (high impedance) to the TP403

and TP405 on the MONITOR board.

2. Check that the voltage between TP951 (–) and TP952 (+) is

14.4 V.  Press the [POWER] button to turn the power on.

3. Check that the value of frequency counter is 6.5 MHz 

±0.2

MHz.

+
–

oscilloscope

or

frequency counter

MONITOR board

TP802
TP804

+
–

digital voltmeter

MONITOR board

TP807
TP804

+
–

digital voltmeter

MONITOR board

TP805/TP806/TP808

TP804

+
–

digital voltmeter

MONITOR board

TP601
TP602

+
–

digital voltmeter

MONITOR board

TP853
TP854

+
–

frequency counter

MONITOR board

TP403
TP405