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Sony KP-57XBR10W Service Bulletin

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S
Sony Service Company
National Technical Services
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656
Model:
KP-57XBR10W, KP-65XBR10W
Subject: Improved Service Adjustment Procedure
For The RA-4W Chassis Models
Solution:
(1330)
Procedure to Improved picture Quality
The procedures below should be followed if the customer is complaining of poor picture quality. Although
these procedures were written for the RA-4W chassis they can also be applied to the RA-3 & RA-4 chassis in
most cases.
Note:
Test equipment required:
1.
Pattern Generator (with component (Y, Pb, Pr) outputs)
Ex.
Leader 408 or Quantum Data 801GG
•
Pre-Aging of the TV: Age the TV set before attempting to adjust the set (especially focus) by one of
the recommended amounts below. Aging Conditions: Apply an all white signal 100-IRE, minimum 30
min to a maximum of 1 hr. (over an hour, causes the CRTs to heat past the optimum adjustment
point), OR TV signal (with moving picture) minimum 2 hrs (no maximum time applies). If this method
of aging is used, be sure to coordinate with the customer/dealer beforehand so that the set is ready
upon your arrival. Use Vivid picture mode setting on TV.
•
Order of Adjustments: Please follow the order of adjustments as stated in this document. This will
maximize results while minimizing readjustment.
•
Confirmation / Adjustment Method: This procedure first instructs the technician to confirm whether
an adjustment is necessary. The technician should only perform the adjustment if the confirmation
indicates that it is required.
•
Method on how to Turn Off the CRTs: To perform some adjustments, it will be necessary to turn off
the CRTs, which can be done in the Service mode by doing the following: Select adjustment category
"MCP1", adjustment item # 07 "RON", #08 "GON", or #09 "BON". The applicable CRT is on when its
data is "01", and off when its data is "00".
•
Accessing the internal generator through the service mode. Select Category PJE MODE using
the 2 or 5 remote button. Repeated pressing of the remote button #6 will allow you to cycle through
the crosshatch, dots, and white signal video pattern.
Reference: PJ Eng.
CONFIDENTIAL
Service Bulletin
TV Products
Important Notes:
Continue on next page
CSV-1
531
No.
Date:
April 27, 2001
PRINTED IN USA

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Summary of Contents for Sony KP-57XBR10W

  • Page 1 CONFIDENTIAL CSV-1  Service Bulletin Sony Service Company National Technical Services A Division of Sony Electronics Inc. TV Products Park Ridge, New Jersey 07656 Model: KP-57XBR10W, KP-65XBR10W Subject: Improved Service Adjustment Procedure Date: April 27, 2001 For The RA-4W Chassis Models...
  • Page 2 TV Products Service Bulletin No. 531 Service data adjustment to Improve Edge Enhancement in NTSC mode: Change the Service data in both categories MCP4 and MCP5. (Categories) The adjustment item “SYS” data should be changed from 2 to 1 in both TV and Video modes. Write the new Service data settings.
  • Page 3 TV Products Service Bulletin No. 531 Green, Red & Blue CRT 2 Pole Magnet Confirmation / Adjustment: Equipment required: Pattern Generator Signal Applied/Input: Dot Hatch Pattern (100-IRE) / Video 1 input Adjust points: Confirmation: RGB Focus VRs Adjustment: 2 Pole Magnets on CRTs Conditions: Brightness to 50% and Picture to 100% Confirmation/ Adjustment Procedure for 2 Pole Magnet Adjustment: 1.

  • Page 4: Blue De-Focus Adjustment

    TV Products Service Bulletin No. 531 Red and Green dot should be round The Blue dot should be Oval in shape. The vertical should be 1.5 x the horizontal size Blue De-Focus adjustment (The blue focus needs to be slightly defocused so to produce a more pleasing picture).
  • Page 5 TV Products Service Bulletin No. 531 CRT/ Lens Focus adjustment: Equipment required: Pattern Generator Signal Applied/Input: All white 100-IRE signal for aging & crosshatch for adjustments Adjust points: Mechanical lens adjust and adjustment of the electrical focus VRs Conditions: Set must be pre-aged as describe in the front section of this document, under Important Notes.

  • Page 6: White Balance Adjustment

    TV Products Service Bulletin No. 531 minimize or eliminate this flare as much as possible. White balance adjustment: Equipment required: pattern generator with 100 IRE all white pattern. Optional: white balance meter. Signal Applied/Input: 100 IRE all white pattern Adjust points: Registers accessed in the service mode Conditions: This adjustment must be done in Standard picture mode for both the Neutral and Warm settings, however, please check color tracking to determine if this adjustment is necessary.
  • Page 7 TV Products Service Bulletin No. 531 available. Adjustment without white balance meter: 1. The 100 IRE all-white signal must be adjusted by eye. Adjust RDRIV, BDRIV in MCP1 to make the white as pure as possible. 2. Adjust picture level to 3 bars up from minimum on the picture bar-graph display if the IRE input signal level cannot be adjusted to 20 IRE.
  • Page 8 TV Products Service Bulletin No. 531 Start with the Normal Mode (this will also adjust the Full mode simultaneously. Full and Normal modes share the same adjustment data). Special Geometry adjustments are required in Normal mode (4:3 mode with gray bars on sides): 1.

  • Page 9: Final Check

    TV Products Service Bulletin No. 531 Apply a 1080i signal to the Video 5 input and go into service mode. Turn on internal crosshatch signal and adjust as needed. Please note, a 1080i signal MUST BE APPLIED to the Video 5 input for the internal crosshatch generator to enter the 1080i mode. If this is not done, the pattern displayed will not be 1080i but stay in the NTSC 480i mode.

  • Page 10: Method Of Setting The Service Adjustment Mode

    TV Products Service Bulletin No. 531 • Method of setting the Service Adjustment Mode. 3. The screen displays the item being adjusted. 4. The category is reached by using the remote buttons 2 and 5. 5. The Adjustment item is selected using remote buttons 1 and 4. 6.
  • Page 11 TV Products Service Bulletin No. 531 3. Check the data and confirm it retained the changes you made. Adjustment buttons on the remote: RM-Y907 Note: When the category PJE is selected, which displays an internally generated signal, several buttons on the remote commander will have different functions then listed above.
  • Page 12 TV Products Service Bulletin No. 531 IMPORTANT: Separate adjustments are required for the multiple modes and MUST be done in the following order. (Each mode will require a separate adjustment.) Full (Normal) Mode Wide Zoom Mode Zoom Mode 1080I (video 5 input mode) In all these modes, both color and geometry adjustments are required.
  • Page 13 TV Products Service Bulletin No. 531 Press the remote 9 button again to exit the fine mode and revert back to the coarse mode. Store the new adjustment data values by using the remote buttons Muting then Enter. IMPORTANT: The adjustments above must be repeated for the different modes in the order below. Full (Normal) Mode Wide Zoom Mode Zoom Mode...
  • Page 14 TV Products Service Bulletin No. 531...

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