KV-AR25M81A - Sony TV Service Manual (repair manual). Page 22

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1.

Receive cross hatch/dot signal.

2.

Adjust RV1801 on C6 board to make H-Trapezoid distortion
best.

1.

Enter to Service Mode.

2.

Press commander buttons 5 and - (Data Initialize), and
2 and - (Data Copy) to initialize the data.

3.

Call each item number and check if the respective screen
shows the normal picture.
In cases where items are not well adjusted, rectify the fine
adjustment.
Write the data per each item number (

[MUTING]

 

→ -).

4.

Select item numbers “OPB00” (OP1), “OPB01” (OP2), "OPB
02" (OP3) and "OPB 03" (OP4) respectively set the bit per
model with command buttons 3 and 6.

5.

Press commander buttons 8 and - (Test Normal) to return
to the data that was set on the shipment from the factory.

(This will also cancel Service Mode.)

11. Input 525/60 Hz signal.
12. Using the 1 and 4 buttons select category GEO (Service

Mode).

13. Select and adjust the following items to obtain obtimum image.

Raise/lower the data with the 3 and 6 buttons.

Service Item

GEO : 00

HPS

H POSITION

01

HSZ

H SIZE

02

PAP

PIN AMP

03

TLT

TILT

04

VPS

V POSITION

05

VSZ

V SIZE

06

SCO

S CORRECTION

07

VLN

V LINEARITY

08

BOW AFC BOW

09

AGL

AFC ANGLE

0A

UPN

UPPER CORNER PIN

0B

LPN

LOWER CORNER PIN

14. Input NTSC Color Bar
15. Adjust condition change to WIDE MODE: ON.
16. Using the 1 and 4 button select category GEO (Service

Mode).

17. Copy (item from NORMAL MODE (60Hz)) adjusted data for

the following items:

Service Item

GEO : 01

HSZ

H SIZE

05

VSZ

V SIZE

06

SCO

S CORRECTION

07

VLN

V LINEARITY

18. Raise/lower the data with the 3 and 6 buttons. Select and

adjust the following items to obtain optimum image.

Service Item

GEO : 00

HPS

H POSITION

02

PAP

PIN AMP

03

TLT

TILT

04

VPS

V POSITION

08

BOW AFC BOW

09

AGL

AFC ANGLE

0A

UPN

UPPER CORNER PIN

0B

LPN

LOWER CORNER PIN

19. After confirm WIDE MODE : ON – OFF.