Sanyo PLC-SU20E Bedienungsanleitung

PRODUCT CODE

(PA6A) PLC-SU20E :1 122 068 00

(PA6C) PLC-SU20B :1 122 068 02 REFERENCE NO. SM5110048-01

FILE NO.

Notice

CORRECTION ●PRODUCTION CHANGE

SERVICE FLASH ADD INFORMATION

REVISION-1

Please add this notice to the Service Manual listed below.

Category : Multi-media Projector Issued Date : April / 2000

PLC-SU20E PLC-SU20E-01

Model : PLC-SU20B Effective from : Service Ref. No. PLC-SU20B-01

Destination : Europe, Asia, M.E, Africa / U.K REF. NO. : SM5110048

NOTE: Match the Service Ref. No. on the unit’s back cover with the Service Ref. No. in the

Service Manual.

If the Service Ref. No. does not match the unit’s, additional Service Literature is

required. This chassis is similar to the Service Ref. No. PLC-SU20E-00, PLC-SU20B-

00. Only the Difference Service Information is given in this manual. For detail Service

Information, Refer to the Original Service Manual and Notices for Service Ref. No.

PLC-SU20E-00, PLC-SU20B-00 used in Model PLC-SU20E, PLC-SU20B.

Give complete “Service Ref. No.”for parts order or

servicing, it is shown on the rating sheet on the

cabinet of the projector.

■DIFFERENCES:

-2-

Differences between Service Ref. No. PLC-SU20E-00/PLC-SU20B and PLC-SU20E-01/PLC-

SU20B-01 as follows;

■Electrical Parts List

●LCD panels were changed as follows;

Service Ref.No. PLC-SU20E-00 Service Ref.No. PLC-SU20E-01

PLC-SU20B-00 PLC-SU20B-01

COMBINATION-(1)

EL901G LCD(P09SG210(G)) 645 041 3988 LCD(P09SG210B(G))

EL902R LCD(P09SG220(R)) 645 041 3995 LCD(P09SG220B(R))

EL903B LCD(P09SG220(B)) 645 041 4008 LCD(P09SG220B(B))

COMBINATION-(2)

EL901G LCD(P09SG220(G)) 645 041 3957 LCD(P09SG220B(G))

EL902R LCD(P09SG210(R)) 645 041 3964 LCD(P09SG210B(R))

EL903B LCD(P09SG210(B)) 645 041 3971 LCD(P09SG210B(B))

COMBINATION-(1)

● COMBINATION OF LCD PANELS

When replacing the LCD panel, confirm the indication of the LCD panel, then replace the correct LCD

panel. Select either combination (1) or (2) when in combine the R, G and B LCD panel.

There is no combination to be used except them.

COMBINATION-(2)

SEAL PART NO. SERVICE PART NO.

R-LCD PANEL RED SEAL P09SG210B 645 041 3964

G-LCD PANEL NO SEAL P09SG220B 645 041 3957

B-LCD PANEL BLUE SEAL P09SG210B 645 041 3971

SEAL PART NO. SERVICE PART NO.

R-LCD PANEL RED SEAL P09SG220B 645 041 3995

G-LCD PANEL NO SEAL P09SG210B 645 041 3988

B-LCD PANEL BLUE SEAL P09SG220B 645 041 4008

SEAL

PART NO.

LOT NO.

P09SG210B

1-B-1234A9

-3-

Electrical Adjustments were modified due to the LCD panel changed

After replacing the Power Board, PF.C. Board, readjust

the Output voltage adjustment as follows.

1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of

K6C.

2. Adjust the voltage by using VR01 as following.

AC Input Reading

230V 370V ±2V

120V 320V ±2V

Caution:

Be sure to connect the lamp when taking this

adjustment.

OUTPUT VOLTAGE ADJUSTMENT

●Circuit Adjustments

CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the

following adjustments except requiring the readjustments in servicing otherwise it may cause loss of

performance and product safety.

[Adjustment Condition]

●Input signal

Video signal ..................1.0Vp-p/75Ωterminated, 16 steps gray scale or color bar pattern

Computer signal............0.7Vp-p/75Ωterminated, 16 steps gray scale pattern

MCI signal * ..................16 steps gray scale pattern from PC Card

●Picture control mode ---------- “NORMAL”mode unless otherwise noted.

Note:

* Please refer to “Service Adjustment Menu Operation”for entering to the service mode and adjusting the service

data.

* It is not available the MCI mode for model which does not provide the PC Card slot.

Presetting

1. Receive the 16-step grey scale video signal.

2. Set to VIDEO mode.

[R-PEDESTAL ADJUSTMENT]

3. Connect an oscilloscope to test point “TP221R”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “27”and

change data value to adjust the pedestal level and

black level to be same level.

[G-PEDESTAL ADJUSTMENT]

5. Connect an oscilloscope to test point “TP221G”(+)

and chassis ground (-).

6. Select item no. “28”and change data value to adjust

the pedestal level and black level to be same level.

[B-PEDESTAL ADJUSTMENT]

7. Connect an oscilloscope to test point “TP221B”(+)

and chassis ground (-).

8. Select item no. “29”and change data value to adjust

the pedestal level and black level to be same level.

Pedestal level = Black level

PEDESTAL ADJUSTMENT

■Electrical Adjustment

-4-

[CG-VIDEO GAIN ADJUSTMENT]

1. Receive the 16-step grey scale computer signal.

2. Set to COMPUTER mode.

3. Connect an oscilloscope to test point “TP2221G”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “48”and

change data value to adjust “a”to be 1.15 ±0.01Vp-p.

[MCI-VIDEO GAIN ADJUSTMENT] *

5. Receive the 16-step grey scale MCI signal.

6. Set to MCI mode.

7. Connect an oscilloscope to test point “TP2221G”(+)

and chassis ground (-).

8. Enter to the service mode, select item no. “48”and

change data value to adjust “a”to be 1.15 ±0.01Vp-p.

VIDEO GAIN ADJUSTMENT-[CG/MCI]

1. Receive the 16-step gray scale video signal.

2. Set to COMPUTER mode.

[R-OFFSET ADJUSTMENT]

3. Connect an oscilloscope to test point “TP2211R”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “45”and

change data value to adjust the pedestal level and

black level to be same level.

[G-OFFSET ADJUSTMENT]

5. Connect an oscilloscope to test point “TP2221G”(+)

and chassis ground (-).

6. Select item no. “46”and change data value to adjust

the pedestal level and black level to be same level.

[B-OFFSET ADJUSTMENT]

7. Connect an oscilloscope to test point “TP2231B”(+)

and chassis ground (-).

8. Select item no. “47”and change data value to adjust

the pedestal level and black level to be same level.

Pedestal level = Black level

OFFSET ADJUSTMENT-[CG]

Pedestal level = Black level

(a)

Electrical Adjustments

-5-

Presetting

1. Receive the 16-step grey scale video signal.

2. Set to VIDEO mode.

[R-VIDEO GAIN ADJUSTMENT]

3. Connect an oscilloscope to test point “TP2211R”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “49”and

change data value to adjust “a”to be 1.12 ±0.02Vp-p.

[G-VIDEO GAIN ADJUSTMENT]

5. Connect an oscilloscope to test point “TP2221G”(+)

and chassis ground (-).

6. Enter to the service mode, select item no. “50”and

change data value to adjust “a”to be 1.12 ±0.02Vp-p.

[B-VIDEO GAIN ADJUSTMENT]

7. Connect an oscilloscope to test point “TP2231B”(+)

and chassis ground (-).

8. Enter to the service mode, select item no. “51”and

change data value to adjust “a”to be 1.12 ±0.02Vp-p.

Pedestal level = Black level

(a)

VIDEO-GAIN ADJUSTMENT-[AV]

Presetting

1. Receive the 16-step grey scale computer signal.

2. Set to COMPUTER mode.

[R-VIDEO CENTER ADJUSTMENT]

3. Connect a digital voltmeter to test point “TP511”(+)

and chassis ground (-).

4. Adjust voltage to be 7.30 ±0.05V by usingVR501.

[G-VIDEO CENTER ADJUSTMENT]

5. Connect a digital voltmeter to test point “TP512”(+)

and chassis ground (-).

6. Adjust voltage to be 7.30 ±0.05V by usingVR531.

[B-VIDEO CENTER ADJUSTMENT]

7. Connect a digital voltmeter to test point “TP513”(+)

and chassis ground (-).

8. Adjust voltage to be 7.30 ±0.05V by usingVR561.

VIDEO CENTER ADJUSTMENT

1. Receive the 16-step grey scale computer signal.

2. Set to COMPUTER mode.

3. Connect an oscilloscope to test point “TP3571”(+)

and chassis ground (-).

4. Adjust “a”to be 5.0 ±0.1V by using VR3571.

(a)

NRS ADJUSTMENT

[GAMMA OFF ADJUSTMENT-CG]

1. Receive the 16-step gray scale computer signal.

2. Set to COMPUTER mode.

3. Connect an oscilloscope to test point “TP512”(+) and

chassis ground (-).

4. Enter to the service mode, select item no. “0”and

change data value to adjust “a”to be 1.60 ±0.01Vp-p.

[GAMMA OFF ADJUSTMENT-AV]

5. Receive the 16-step gray scale video signal.

6. Set to VIDEO mode.

7. Connect an oscilloscope to test point “TP512”(+) and

chassis ground (-).

8. Enter to the service mode, select item no. “0”and

change data value to adjust “a”to be 1.60 ±0.01Vp-p.

GAMMA OFFVIDEO ADJUSTMENT

(a)

Electrical Adjustments

-6-

1. Receive the 16-step gray scale computer signal.

2. Set to COMPUTER mode.

3. Connect an oscilloscope to test point “TP512”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “3”and

change data value to adjust “a”to be maximum.

(a)

S/H CLOCK ADJUSTMENT

Presetting

1. Input the 16-step gray scale video signal, MCI signal

and computer signal.

[CG/MCI/AV-VIDEO ADJUSTMENT] *

2. Connect an oscilloscope to test point “TP512”(+)

and chassis ground (-).

3. Enter to the service mode, select item no. “15”and

change data value to adjust “b”to be 1.6Vp-p at

each VIDEO, MCI and COMPUTER mode.

4. Select COMPUTER and MCI mode, select item no.

“12”and change data value to adjust “a”to be 4.00

±0.01Vp-p.

5. Select VIDEO mode, select item no. “12”and change

data value to adjust “a”to be 4.00 ±0.01Vp-p.

[R-VIDEO ADJUSTMENT]

6. Connect an oscilloscope to test point “TP511”(+)

and chassis ground (-).

7. Enter to the service mode and select COMPUTER

mode.

8. Select item no. “13”and change data value to adjust

“a”to be 4.05 ±0.01Vp-p.

9. Select VIDEO mode and item no. “13”and change

data value to adjust “a”to be 4.00 ±0.01Vp-p.

[B-VIDEO ADJUSTMENT]

10.Connect an oscilloscope to test point “TP513”(+)

and chassis ground (-).

11.Enter to the service mode and select COMPUTER

mode.

12.Select item no.“14”and change data value to adjust

“a”to be 4.05 ±0.01Vp-p.

13.Select VIDEO mode and item no. “14”and change

data value to adjust “a”to be 4.00 ±0.01Vp-p.

(a)

(b)

black level

white level

CG/MCI/AV VIDEO ADJUSTMENT-1

[CG-VIDEO ADJUSTMENT-2]

1. Receive the 16-step grey scale computer signal.

2. Set to COMPUTER mode.

3. Connect an oscilloscope to test point “TP512”(+)

and chassis ground (-).

4. Enter to the service mode, select item no. “15”and

change data value to adjust “b”to be 2.15 ±0.01Vp-p.

[MCI-VIDEO ADJUSTMENT-2] *

5. Receive the 16-step grey scale MCI signal.

6. Set to MCI mode.

7. Connect an oscilloscope to test point “TP512”(+)

and chassis ground (-).

8. Enter to the service mode, select item no. “15”and

change data value to adjust “b”to be 2.15 ±0.01Vp-p.

[AV-VIDEO ADJUSTMENT-2]

9. Receive the 16-step grey scale video signal.

10. Set to VIDEO mode.

11.Connect an oscilloscope to test point “TP512”(+)

and chassis ground (-).

12. Enter to the service mode, select item no. “15”and

change data value to adjust“b”to be 2.25 ±0.01Vp-p.

(a)

(b)

black level

white level

CG/MCI/AV VIDEO ADJUSTMENT-2

Electrical Adjustments

-7-

[CG WHITE BALANCE ADJUSTMENT]

1. Receive the 16-step grey scale computer signal.

2. Set to COMPUTER mode.

3. Enter to the service mode, select item no. “16”(Red)

or “17”(Blue), and change data values respectively

to make a proper white balance.

[MCIWHITE BALANCE ADJUSTMENT] *

4. Receive the 16-step grey scale MCI signal.

5. Set to MCI mode.

6. Select item no. “16”(Red) or “17”(Blue), and change

data values respectively to make a proper white

balance.

[AVWHITE BALANCE ADJUSTMENT]

7. Receive the 16-step grey scale video signal.

8. Set to VIDEO mode.

9. Select item no. “16”(Red) or “17”(Blue), and change

data values respectively to make a proper white

balance.

Confirm that the same white balance is obtained in

video, MCI and computer mode.

WHITE BALANCE ADJUSTMENT

1. Receive the 16-step gray scale computer signal.

2. Set to COMPUTER mode.

[R-COMMON CENTER ADJUSTMENT]

3. Cover the G and B panel to block the light transit.

4. Adjust VR3502 to obtain the minimum flicker on the

picture.

[G-COMMON CENTER ADJUSTMENT]

5. Cover the R and B panel to block the light transit.

6. Adjust VR3503 to obtain the minimum flicker on the

picture.

[B-COMMON CENTER ADJUSTMENT]

7. Cover the G and R panel to block the light transit.

8. Adjust VR3504 to obtain the minimum flicker on the

picture.

COMMON CENTER ADJUSTMENT

[AV BLACK BALANCE ADJUSTMENT]

1. Receive the 16-step grey scale video signal.

2. Set to VIDEO mode.

3. Enter to the service mode, select item no. “9”(Red)

or “10”(Blue), and change data values respectively

to make a proper white balance at darker part of the

screen.

BLACK BALANCE ADJUSTMENT

Electrical Adjustments

-8-

White uniformity compensation adjustment system of this model divided the screen into 13 in vertical direction and

16 in horizontal direction and specified the area by using its co-ordinate, and then adjust the RGB white balance on

the specified area, refer to the figure below.

Please note that the selected area and dividing lines are not indicated on the screen. Roughly select the area you

wish to adjust with vertical and horizontal address number as shown figure below.

[Before adjustment]

- Set to normal display mode.

- Confirm the white uniformity compensation mode on.

Enter to the service mode , select item no.“83”and confirm that the data value is “186”(mode On).If the data

value is “58”(mode OFF), change value to “186”by pressing the VOLUME + or VOLUME - button.

- Initialize the all of compensation data. (This is required when the LCD panel is replaced more than 2 panels.)

1) Enter to the service mode, select item no. ”82”and increase the data value from “0”to “10”.When the value

reaches “10”, the data value is automatically return to “0”and the initializing has been completed.The all of

compensation data for RGB are to be “32”.

- Mode :Video or Computer mode

- Input Signal :White raster signal

- Picture control : Normal level

[How to adjust white uniformity]

[1] Enter to the service mode.

[2] Chose the area you wish to adjust.For example, choosing 3rd area from the top and 10th area from the left.

Select Item No.“77”(Vertical area no. selection mode) and select Data No.“2”, and select Item No.“78”

(Horizontal area no. selection mode) and select Data No.”9”.The area no. starts from “0”.

[3] Adjust white balance in selected area.

Select Item No.”79”(Red), “80”(Green) or “81”(Blue), and change data value to adjust white balance.

[4] Repeat steps 2 to 3 until obtaining better white uniformity.

[5] Exit from the service mode.

WHITE UNIFORMITY ADJUSTMENT

012345678910 11 12 13 14 15

Item : <77> Data : <2>

Item : <78> Data : <9>

Service Mode

Video Item Data

77 2

This adjustment should be carried out when existing unbalanced white uniformity on the screen or after replacing

the LCD panels. (When replacing the main board-A, the memory IC, IC302 on the main board-A should be

replaced with the one on previous board, so that the white uniformity adjustment may not be required because

the data of white uniformity adjustment are stored in this memory IC, IC302.)

Item Initial Value Range Description

77 0 0 ~ 12 Vertical area no. selection

78 0 0 ~ 15 Horizontal area no. selection

79 32 0 ~ 63 Red white balance adjustment

80 32 0 ~ 63 Green white balance adjustment

81 32 0 ~ 63 Blue white balance adjustment

82 0 0 ~ 10 Reset of white uniformity comp. data

83 186 58 or 186 White uniformity comp. On/Off

Electrical Adjustments

-9-

Apr./2000 1300 SI Printed in Japan

SANYO Electric Co., Ltd.

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