XG-PH70X (serv.man3). Electrical Adjustment - Sharp Projector Service Manual (repair manual)

XG-PH70X/XG-PH70X-N

3 – 1

XG-PH70X

Service Manual

 

– Turn on the power (lamp on state) and wait for 15 minutes for aging.

– Enter the adjustment process mode with S3602 (tact switch) on the main board.

In case that top cabinet covered S3602, you can enter by pushing key continuously in sequence.

* You can exit from factory mode by same method. (Or select "EXIT" in the process mode to exit.)

– Select the group to adjust with the DOWN key or the UP key, and enter the adjustment item with the ENTER key on the remote control or key pad.

– Select the adjustment item with the DOWN key or the UP key.

– Use the LEFT key or the RIGHT key for adjustment.

– To return from the adjustment item to the adjustment group, use the UNDO key or the MENU key.

– Change internal test pattern and input signal with the MUTE key

key pad

On -> Up -> Down -> Up -> Down -> Enter -> Enter -> Menu

Remote controller

On -> Vol up -> Vol down -> Vol up -> Vol down -> Enter -> Enter -> Menu

1

Initialization of 
EEPROM

1. Turn on the power (the lamp lights
    up) and warm up the system for 15
    minutes.
2. Select the following group and
    subject.
    Group  : SSS
    Subject: S2

1. Press S3602 to enter the process mode.
2. Execute the S2 command on the SSS menu.
* With the S2 command, all the circuit boards will be initialized.

NOTE: Since the PC I/F unit is initialized with S1, do not carry out S1.

3. Wait approximately 30 seconds and when "INPUT1" appears, turn off the
    power.
4. After all the fans stop, turn the power back on.

2

Write MAC 
address

1. Read a sticker which is written mac address on main board.
2. Write MAC address by 232c serial cable. (For the procedure, refer to the
    attachment.)

3

Adjustment of 
CW index

1. Signal input: 64 STEP color bar
    signal.
2. Select the following group and
    subjects.
    Group   : DLP
    Subject : CW-INDEX

1. Feed the signal to INPUT 1.
2. Select subject and make adjustment so that the uniformity should be
    smooth.

4

Adjustment of 
DLP voltage

1. Read voltage rank of DLP
    description.
2. Select the following group and
    subjects.
    Group   : DLP
    Subject : DMD-BIN

1. Adjust DMD-BIN corresponding to the rank which has been read. (on the
    main board)
    Rank / setting value
          B / 0
          C / 1
          D / 2
          E / 3
* Carry out adjustment when DLP chip or PC board has been replaced

5-1

Adjustment of 
Video brightness

1. Select the following group and
    subject.
    Group   : VIDEO
    Subject : BRIGHT

1. Check that the value is 115.

5-2

Adjustment of 
Video contrast

1. Select the following group and
    subject.
    Group   : VIDEO
    Subject : PICTURE-SUB

1. Check that the value is 157.

XG-PH70X/XG-PH70X-N

3 – 2

for reference / setting

6

Adjustment of 
component Cr/
Cb offset (1)

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : COMPO-AUTO

1. After signal input, select COMPO-AUTO for automatic adjustment.

7

Adjustment of 
component 
brightness

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : G-BRIGHT

1. Make adjustment so that some bits should be missing in the picture.
* refer to the following photo image

8

Adjustment of 
component Cr/
Cb offset (2)

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : CR-OFFSET

1. Reduce the CR-OFFSET value by 2 points.

9

Adjustment of 
RGB white bal-
ance

1. Feed the 50% gray pattern signal
    (XGA, 60 Hz) to INPUT1.
2. Select the following group and
    subject.
    Group     : DLP
    Subjects : R1-GAIN (Red)
                     B1-GAIN (Blue)

1. Adjust R1-GAIN and B1-GAIN so that x-value should be 290 

±3 and y-

    value 310 

± 3.

10

Adjustment of 
sRGB white bal-
ance

1. Feed the 50% gray pattern signal
    (XGA, 60 Hz) to INPUT1
2. Select the following group and
    subject.
    Group     : DLP
    Subjects : S-G1-GAIN (Green)
                     S-B1-GAIN (Blue)

1. Adjust S-G1-GAIN and S-B1-GAIN so that x-value should be 313 

±5 and y-

    value 329 

± 5.

11

adjustment of 
video white bal-
ance

1. Feed the 50% gray pattern signal
    (NTSC, burst signal) to INPUT4.
2. Select the following group and
    subject.
    Group     : DLPV
    Subjects : V-R1-GAIN (Red)
                     V-B1-GAIN (Blue)

1. Adjust V-R1-GAIN and V-B1-GAIN so that x-value should be 290 

± 3 and y- 

    value should be 310 

± 3.

12

Adjustment of 
DTV white bal-
ance

1. Feed the 50% gray pattern signal
    (480i, color difference signal) to
    INPUT1.
2. Select the following group and
    subject.
    Group     : DLPV
    Subjects : C-R1-GAIN (Red)
                     C-B1-GAIN (Blue)

1. Adjust C-R1-GAIN and C-B1-GAIN so that x-value should be 290 

± 3 and y-

    value should be 310 

± 3.

13

Factory settings 

1. Select the following group and
    subject.
    Group   : SSS
    Subject : S4 (North America)
                   S3 (Europe/Asia/Australia)
                   S5 (Japan)

1. Make the following settings.
    PH70XU : S4 (to north America)
    PH70X   : S5 (to Japan)
    Other     : S3 (to Europe/Asia/Australia)

S3

English

0IRE

S4

English

7.5IRE

S5

Japanese

0IRE

XG-PH70X/XG-PH70X-N

3 – 3

NOTE: Since the PC I/F unit is initialized with S1, do not carry out S1. The PC I/F unit is already adjusted.

When the PC I/F unit must be adjusted, in such case as S1 is carried out by mistake, adjust it according to the followings

14

Lens shift posi-
tion

1. Move lens shift position
    Vertical : Top position
    Horizontal: Center

15

Turn off the 
power

1

Initialization of 
EEPROM

1. Select the following group and
    subject.
    Group  : SSS
   Subject : S1

1. Press S3602 to enter the process mode.
2. Execute the S1 command on the SSS menu. (By S1, all the contents of
    EEPROM are initialized.)

2

RGB tone repro-
duction adjust-
ment

1. Feed the window pattern signal
    that has 92% (0.64Vbw) and 0%
    signals (XGA/60Hz) to input 1
2. Select the following group and
    subject.
    Group     : A/D
    Subjects : AD-AUTO

* When you can not prepare 92% 

signal

1. Feed the window pattern signal
    that has 100% (0.7Vbw) and 0%
    signals.
    (XGA/60Hz) to input 1
* "MUTE" key will be change to 

the factory gamma

1. After signal input, select AD-AUTO for automatic adjustment.

1. Select the following group and subject.
    Group     : A/D
    Subjects : G-BRIGHT
2. Make adjustment so that some bits should be missing in black area of the
    picture.

3. Select the following group and subject.
    Group     : A/D
    Subjects : G-D
4. Make adjustment so that some bits should be missing in white area of the
    picture.
5. Select the following subject.
    Subjects : R-BRIGHT
6. Make adjustment so that some bits should be missing in black area of the
    picture.
7. Select the following subject.
    Subjects : R-D
8. Make adjustment so that some bits should be missing in white area of the
    picture.
9. Select the following subject.
    Subjects : B-BRIGHT
10. Make adjustment so that some bits should be missing in black area of the
      picture.
11. Select the following subject.
      Subjects : B-D
12. Make adjustment so that some bits should be missing in white area of the
      picture.

XG-PH70X/XG-PH70X-N

3 – 4

How to write MAC address

(Write)

Send the following 232c commands in sequence

1.

_

L

M

A

0

0

*1

*2

+"enter" key

*1 the first byte

wait "OK"

*2 the second byte

2.

_

L

M

A

1

0

*3

*4

+ "enter" key

*3 the third byte

wait "OK"

*4 the fourth byte

3.

_

L

M

A

2

0

*5

*6

+ "enter" key

*5 the fifth byte

wait "OK"

*6 the sixth byte

4.

_

L

M

A

3

0

*7

*8

+ "enter" key

*7 the seventh byte

wait "OK"

*8  the eighth byte

5.

_

L

M

A

4

0

*9

*10 + "enter" key

*9 the ninth byte

wait "OK"

*10 the 10th byte

6.

_

L

M

A

5

0

*11

*12

+ "enter" key

*11 the 11th byte
*12  the 12th byte

(Read)

Send the following 232c commands

_

L

M

A

1

+ "enter" key

MAC address will be appear on screen

How to write serial number

(Write)

Send the following 232c commands in sequence.

1.

S

N

_

1

1

2

3

4

+ “enter” key

wait “OK”

2.

S

N

_

2

5

6

7

8

+ “enter” key

wait “OK”

3.

*1

*2

*3

*4

*5

*6

*7

*8

*9

*10

*11

*12

+ “enter” key

4.

*1

*2

*3

*4

*5

*6

*7

*8

*9

*10

*11

*12

+ “enter” key

wait “OK”

(Read)

Send the following 232c commands

S

N

R

D

1

+ “enter” key

serial number will be appear on screen

*1~*12/serial number

same data as step3
NOTE: When number of characters of the serial number is shorter than twelve characters, 

please use space character ““.

for example

serial number is “1311163”

1

3

1

1

1

6

3

+ “enter” key

serial number is “412311112”

4

1

2

3

1

1

1

1

2

+ “enter” key

How to check projector status

(Read)

Send the following 232c commands

T

F

C

K

1

+ “enter” key

serial number will be appear on screen