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S CONFIDENTIAL CSV-1
Sony Service Company
National Technical Services Service Bulletin
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656 TV Products
Model: KD-34XBR2, KDP-57XBR2, KDP-65XBR2 No. 553
Subject: Video-5 480p Picture Blanks, and/or Picture Date: November 13, 2001
Size Changes/Shifts Left With All Signals
Through All Inputs (Including Tuners).
Symptom:
(2357) Symptom #1- When viewing 480p (progressive scan) signals through the video-5
input the picture may intermittently blank out and then come back again. Customers
may describe the symptom as "picture blinking" or "picture flashing". Video-6 input
does not exhibit these symptoms.
Symptom #2- When viewing any source at all, including the tuners, the picture may
suddenly change size, e.g. it changes from 4:3 normal mode to full screen mode, and
then it changes back again. In some cases, the picture size may shrink and shift to
the left momentarily.
Some sets may exhibit only one of the above mentioned symptoms, while other sets
may exhibit both. It is therefore important that both of the following countermeasures
be applied in sets that do not already have them applied.
Solution: For symptom # 1- Suggest that the customer use the video-6 input for the 480p
source, as this is the easiest and quickest solution. If the customer is already using
video-6 for another source, or if the customer does not want to use video-6 for the
480p source, then replace the B-board. B-boards received from WRPC-AS have a
firmware change as a countermeasure for the symptom.
NOTE: In order to minimize the time required to touch up the picture adjustments
when replacing the B-board it is recommended that you use the NVM reader/writer jig
to copy the adjustment data from the NVM IC004 on the original B-board and write it
to the NVM IC004 on the new B-board. If an NVM jig is not available you can remove
the NVM IC004 on the original B-board and install it in place of the NVM IC004 on the
new B-board. The NVM IC has only 8 pins and is easy to remove and re-install.
See the last page for the location of IC004 and the points to which the NVM jig's
reset lead must be connected.
Approx. applicable serial number ranges for symptom/solution # 1:
KD-34XBR2 8000000 - 8004710
KDP-57XBR2 9000000 - 9001077
KDP-65XBR2 9000000 - 9000360
For symptom # 2- Replace ferrite beads FB7601 and FB7602 on the QM-board
(inside the digital receiver/decoder box, or "Q-box") with 220 ohm metal chip resistors.
Approx. applicable serial number ranges for symptom/solution # 2:
KD-34XBR2 8000000 - 8003629
KDP-57XBR2 9000000 - 9002714
KDP-65XBR2 9000000 - 9001516
Reference: VPA Engineering PRINTED IN USA
TV Products Service Bulletin No. 553
REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER
30 (KD-34XBR2) B-BOARD A-1136-203-A SAME SAME
152 (KDP-57XBR2 B-BOARD A-1136-205-A SAME SAME
(KDP-65XBR2)
FB7601/FB7602 INDUCTOR, 1-414-229-11 RESISTOR, 220 1-216-813-11
FERRITE BEAD OHM, METAL
CHIP
For symptom # 1,
replace the B-board.
B-board
Q-box
For symptom # 2,
replace FB7601 and
FB7602 on the QM-
board with 220 ohm
resistors. See next
page for mounting
locations.
Q-box and B-board mounting
location (KDP-57XBR2/65XBR2
shown; KD-34XBR2 similar).
TV Products Service Bulletin No. 553
FB7601
FB7602
For symptom # 2, replace ferrite
beads FB7601 and FB7602 on the
QM-board with 220-ohm metal chip
resistors, part # 1-216-813-11.
The QM-board is located inside the
digital receiver/decoder box ("Q-
box").
TV Products Service Bulletin No. 553
R085 R074
IC004
When using the NVM jig to read and write
data, the jig's reset lead (black mini-clip)
must be connected to R074 to read data,
and to R074 and R085 at the same time to
write data. It's easiest to solder thin
insulated jumper wires (about 2" long) to
the points indicated by the white circles,
and attaching the jig's reset lead to the
free end of the jumper wire. When writing
the data, you can twist the free end of
each wire together so that you can
connect the jig's reset clip to both of them
at the same time.
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