Sony KD-34XBR2 - 34" Hdtv Fd Trinitron Wega Installation guide

S®
Training Manual
Troubleshooting Information
Course: CTV-29/TVP-12 (C29P12)
Direct View
& Projection TVs
HA-3/RA-5A Chassis
Models: KD-34XBR2
KDP-57XBR2
KDP-65XBR2
KDP-57XBR2
KD-34XBR2

Table of Contents
1. Introduction...................................... 1
Models Covered .............................................. 1
TechnicalHighlights......................................... 1
2. New Features ................................... 3
Menu ............................................................... 3
i Link................................................................ 5
3. DTV Signal Information................... 8
Digital TV Transmissions................................. 8
Signal Contents ............................................... 8
Signal Quality .................................................. 9
4. HA-3 Chassis Overall Block .......... 10
5. Power ON Block (HA-3 Chassis)... 12
Power Supplies .............................................. 12
Standby Power Supply ................................... 13
Primary & Secondary Power Supplies............ 13
TV Power ON Sequence ................................ 15
6. Primary Power Supply
( HA-3 & RA-5A Chassis)................. 16
Oscillator Start Up .......................................... 16
Driver / Output stage ...................................... 16
Regulator Stage.............................................. 17
Testing............................................................ 18
7. Secondary Power Supply
(HA-3 & RA-5A Chassis)................. 20
Start UP.......................................................... 20
Regulation ...................................................... 21
Testing for Low B+ or Shutdown..................... 21
8. Protection Block (HA-3 Chassis) .. 23
Protection Circuits .......................................... 24
9. High Voltage Stage
(HA-3 Chassis) ............................... 32
Start Up .......................................................... 32
Protection ....................................................... 33
HV Adjustment ............................................... 34
Testing............................................................ 35
10. Communications
(HA-3 & RA-5A Chassis)..................... 36
11. Video Process
(HA-3 & RA-5A Chassis)................ 40
Overall Sync Path........................................... 43
Board Replacement Repairs .......................... 44
Component Level Repair................................ 53
DTV Tuner Processing for DTV Box Repair
(HA-3 & RA-5A Chassis ............................. 58
12. Audio Block (HA-3 Chassis) ........ 60
Signal Flow..................................................... 60
Normal Signal Levels ..................................... 62
13. Firmware Upgrade
(HA-3 & RA-5A Chassis)................. 63
14. HA-3 TV Chassis
Board Replacement........................ 66
15. Convergence Adjustment
Overview (HA-3 Chassis)............... 69
Service Mode Access (conventional).............. 69
Service Mode Categories (groups)................. 69
Convergence Adjustments - Overview............ 70
Data Copy Function........................................ 71
Internal Video Pattern Generation.................. 71
Alternate Video 5/6 Input Path -
used for troubleshooting only ..................... 72
RA-5A Chassis
16. Board Layout
(RA-5A Chassis).............................. 74
17. Overall Block................................. 75
18. Power Supply Block ..................... 77
Power Supplies .............................................. 78
Power ON....................................................... 79
19. G Board Tests................................ 81
A. Power the G board and check
output voltages ........................................... 81

B. Power UP the G board removed from
the TV chassis............................................ 82
C. Powering up the G board power supplies
after parts replacements............................. 82
20. Protection Block
(RA-5A Chassis)..............................85
Protection Circuits .......................................... 86
21. High Voltage Stage
(RA-5A Chassis).............................95
HV Power Supply Start Up
(Board level repairs) ................................... 95
HV Block Description
(Component level repairs) .......................... 95
Testing for Dark Screen.................................. 98
22. Video Process
(RA-5A Chassis)............................100
23. Board Replacement
(RA-5A Chassis).............................102
Appendix
Connector Layout (HA-3 Chassis).................... i
Communication (HA-3 Chassis) .......................ii
D Board Tests (RA-5A Chassis) ...................... iii
Physical Video/Sync Path (RA-5A Chassis) .... iv

1
1. Introduction
Introduction
This training manual covers circuit description and troubleshooting for the direct view HA-3 TV chassis and the
similar projection TV RA-5A chassis. This information is on two levels. The first level covers board replacement.
Asyou readfurther,you enter thesecondlevel containingtheinformation for componentlevelto repairtheboard.
When repairing at component level, references are made to the DTV-02 training manual (P/N = DTV021000),
which contains circuitry similar to the HA-3 direct view TV circuitry.
Models Covered
Model numbers related to the HA-3 and RA-5A chassis are listed in Chart 1-1:
Chart 1-1 -Related Model Number
HA-3 Chassis Direct View TV Models RA-5A Chassis Projection TV Models
KD-34XBR2 KDP-57XBR2
KDP-65XBR2
The “D” in the model name refers to the digital decoder box built into the TV that can decode the 18 ATSC digital
TV formats approved for the USA and Canada over the air transmission. ATSC stands for “Advanced Television
Standards Committee” and replaces the 1940 NTSC (National Television Standards Committee) standard. The
above models have a 16 x 9 aspect ratio screen in compliance with most of the ATSC formats.
Chart 1-2 –TV Inputs
Video Off the Air / Cable
Video 1-4 –480i NTSC format Air –NTSC channels 2-69
Video 5-6 –480i NTSC format or 480p, 720p, 1080i ATSC format Air –ATSC channels 2-69
Cable –NTSC channels 1-125
Technical Highlights
•There are three microprocessors in the Q box and the TV operations micro is on the B board. They are listed
in Chart 1-3 below: Chart 1-3 –Microprocessors in the TV
Q box (DTV decoder) B Board AD Board
Digital Processor Main TV Micro
MPS CPU (i LINK) Convergence Micro (PJ TV
only)
MID Microprocessor
•The Q box micros talk to the TV micro using separate receive (RXD) and transmit (TXD) lines. The Main TV
Micro talks to the TV ICs using the standard I2C communications format.
•The New white OSD Menu is generated by one of the Q box micros.
•TheTV microgeneratesthe service modeOSDand greendisplaysas before butthereare twointensitiesfor
thegreenchannel display. When changingchannels,thegreenchannelnumbershows at fullintensityfor1.5
seconds then drops in brightness to prevent burning the CRT.
•All the video passes through the Q box. The Q box is exchanged as a package.
•There are self-diagnostics in these TV sets with memory to assist in locating shutdown causes.
•One horizontal high scan frequency of 33.75kHz, yields less geometry/convergence adjustments.
•Geometry / Convergence Adjustments are made in the FULL picture mode and its data is copied into most
other picture modes

2
1. Introduction
•There are three power supplies in each of these TV sets. The primary supply must start before the secondary
supply operates, and the horizontal sweep must be active before the HV power supply becomes active.
•There is no filament preheating from the primary power supply as in the similar Sony model KV32XBR400
(DX-1A chassis). The CRT filament voltage comes from the HOT.
• There are only a few mechanical adjustments in these TV sets and they are listed in Chart 1-4 below:
Chart 1-4 - Mechanical Adjustments
Direct View TV (HA-3 chassis) Projection TV (RA-5A chassis)
G2 (screen) – C board G2 (screen) controls - chassis
H Static control – C board Static electrical focus - chassis
Static focus on the Flyback - D board Mechanical focus - lenses
HV reg. and shutoff point (2 epoxy sealed controls) – D
board HV reg. and shutoff point (2 epoxy sealed controls) – D board
Sony and i LINK are registered trademarks of Sony Electronics.

3
2. New Features
New Features
Menu
The video, screen mode and setup menus are new or have changed. The changes to the menu are explained
below:
Video Menu
Refer to Figure 2-1 for a sample of the video menu.
Figure 2-1
Video
Picture Mode Vivid
Picture
Brightness
Color
Hue
Sharpness
Color Temperature Cool
VM High
DRC Mode CineMotion
Alternate Video Alternate 1
DRC Mode = Interlaced / Progressive / CineMotion – There are three
choices offered in the DRC mode. The Digital Reality Creation (DRC)
modulewithin the Qboxconvertsthe NTSCinputvideoto a higherreso-
lution picture. This is necessary so a standard resolution input can be
presentedon thishigh-scanTVscreen. During theconversion,you can
instruct the DRC module to output the high-resolution video in one of
three modes: Interlaced, Progressive or CineMotion.
Interlaced picture is for moving images – A single TV frame consists of
two picture fields (see Figure 2-2). Each field contains on half of the
picture and was originally presented this way in the NTSC TV standard
to reduce flicker.
Figure 2-2 - Interlaced Pix
Field
1Field 2
"6i" Interlaced Picture consisting of
alternating lines from fields 1 & 2 Figure 2-3 - Progressive Pix
"6p" Progressive
Scan Picture
Progressive picture is for still pictures – When the TV screen contains pages of still text or a still image, an
interlaced picture appears to jitter. This is because field 2 displays the same picture as field 1, but is positioned
lower. When the fields are displayed one after the other, a still picture appears to jump. The solution is to not
displace these lines (see Figure 2-3). Progressive scan only has one field per picture so a still image does not
jump.
CineMotion is for movies shot at 35mm or wide 70mm – Movie film is NOT shot at the same rate that television
presents a picture. A Telecine Conversion must take place to present the 24 frames/sec of movie film in the 30-
frames/sec (60-fields/sec) TV rate. This conversion is also referred to as 3:2 pulldown because the first frame is
duplicated three times and the second twice (see Figure 2-4) before repeating. The result is that sometimes two
different film picture frames are merged into an interlaced TV frame. As a result, there may not be smooth
movement. Therefore, this Telecine conversion distorts moving TV images.

4
2. New Features
A, A, B, B, C, C, D, D, A, A A, B B, C C, C D, D
Telecine
Conversion
4 film frames (24 frames duplicated
to 48 frames/sec to reduce flicker) 1 2 3 4 5
Interlaced frame #
Figure 2-4 - CineMotionProblem +=
Film
frame B Film frame C Distorted TV frame 3
The distortion is eliminated in this TV’s CineMotion mode by restoring the original film sequence, eliminating the
3:2 pulldown originally used for timing (see Figure 2-5). Each TV frame contains the same picture so the movie
is clearer. The time difference between film and TV video is compensated for by digitally storing and displaying
the movie frames for a longer period. CineMotion
Mode
Figure 2-5
CineMotion
Solution
A, A B, B C, C D, D A, A
1 2 3 4 5
Interlaced frame #
A, A A, B B, C C, C D, D
12345
Interlaced frame #
Clear
Frame 3
Distorted TV
frame 3
Alternate Video / Audio - Refer to Figure 2-1 for a sample menu page. If this feature in the DTV transmission is
available, the user can select a second video or audio stream for a different camera angle or second language.
Screen Modes Menu
Refer to Figure 2-6 for a sample Screen Mode menu.
Wide Mode - you can alter the 4:3 picture you are watching into:
Wide Zoom – The sides of a 4:3 picture are stretched while the top
and bottom are condensed.
Normal – No change to the 4:3 picture.
Full – The 4:3 picture is just stretched horizontally.
Zoom – The 4:3 picture is enlarged to maintain aspect ratio.
4:3 Default - Allows the TV to enter one of the above Wide Modes when you change stations. If “OFF” is
selected, the 4:3 picture will remain in the size selected by Wide Mode.
Figure 2-6 - Screen Mode Menu
Screen Mode
Wide Mode Wide Zoom
4:3 Default Off
Vertical Center
Vertical Size

5
2. New Features
Setup Menu
Refer to Figure 2-7 for a sample setup menu page.
Select Out - Selects Monitor for the same screen pix, TV for tuner, or
Video 1-4 regardless of what you are watching.
i Link Setup - Allows you to select a product like a cable box, which is
connected to the rear panel i Link (IEEE1394) jack.
i Link Standby - Allows the TV to remain at a power level between
standby and ON so an i Link device can power this TV ON.
Vertical Correction - Vertical position (centering)
FactoryReset –Clears all usersettings and theactiveTVchannels found
so only channels 2-13 are loaded. The TV shuts off momentarily and
loads the defaults at turn ON.
i LINK 
i Link and Fire Wire are trade names for the IEEE-1394 high-speed communications standard that can
support digital video, audio and data. It uses transaction-based packet technology to communicate between
devices. This standard was developed to help bridge the gap between PCs and consumer electronic products.
Compatibility
The purpose of i Link is to transmit and receive high-speed data. The data may include digital audio and video
data as well as communications data in the ideal arrangement. In this early i Link acceptance stage, no digital
video or audio input is possible with this TV. Communications with this TV is limited to operation with the Sony
CableVision cable box currently used in NYC. Therefore, the following information shows how to connect i LINK
devices and what this TV does with an i LINK connected device.
Connection for Speed
The IEEE-1394 allows the data transmission speed to vary between devices, but the proper connection will
improve communications speed. In Figure 2-8, the PC or scanner would have no trouble communicating with the
camcorder at a rate of 100 Mb/s. However, the scanner could not communicate with the PC at its top data rate of
200 Mb/s because the path between the two contains a 100 Mb/s device (the camcorder). The maximum data
rate that can be achieved through another device is limited to the speed of that device.
In Figure 2-9, the PC and the scanner would be able to communicate at the scanner’s top rate of 200 Mb/s. It is
important that when an IEEE-1394 network is set up, that high-speed devices are connected to high-speed
devices and lower speed devices are placed at the end of the chain.
Figure 2-7 - Setup Menu
Setup
Caption Vision Off
Select Out Monitor
Video Input
Language
i Link Setup
i Link Standby Off
Set Clock/Timers
Vertical Correction
Tilt Correction
Demo
Factory Reset
PC
400Mb/s Camcorder 100 Mb/s Scanner 200 Mb/s
Figure 2-8 - Bandwidth limited by slower device
PC
400Mb/s Camcorder 100 Mb/s
Scanner
200 Mb/s
Figure 2-9 - Improved Hookup

6
2. New Features
Therear panel iLinkconnectors on thebackof this TV(seeFigure2-10) connecttohardwareand softwareinthe
DTV’s “Q box” to identify and react with other i Link devices. The speed of this i Link device is marked next to the
connector as 200 Mb/s.
Operation
Onceanother i Linkdeviceisconnected andturnedon,communications occurs. The DTVdisplaysthemessage
shown in Figure 2-11 at the center of the screen. When you select “Add”, a second message may appear if the
digital inputs formats are compatible. The message will ask you to select the input for this i Link device. After-
wards a momentary message says the setup is now complete. You can now press the i Link button on the front
panelor remoteandsee thenewi Linkdevicelisted along withthe DTV iLink device itself. Wheneveryouselect
that device from the list, the two will operate together. In this example, the output of Sony camcorders is a digital
DV format. The DTV set is expecting an MPEG digital video format and therefore cannot display the DV format
video on the screen. An analog cable between the two is needed to display the camcorder video as explained in
the owner’s manual. The TV’s video 1 input must then be selected manually to view the camcorder picture.
i Link Circuitry
The i Link circuits and jacks are at the rear of the QI board. The four pins of each i Link jack (CN9203 and
CN9294) are connected to eight individual pins of IC9203 (see Figure 2-12 for the circuitry). The QI circuitry is
provided as reference since both QI and QM boards are replaced as an assembly.
Figure 2-10 - Back panel of TV
Digital Audio
Optical Output
i Link
S200
Figure 2-11 - TV screen
after i Link connection
Found new i Link Device
Sony DCR-TRV130
Do you want to add this
device?
Cancel Add

7
2. New Features
The microprocessor for the i Link program is IC9209, but the i Link data is stored in upgradable Flash memory
IC9210 and IC9211. IC9205 is an IC that acts as an interface or bridge to another micro IC7205 (not shown) on
the QM board via the EMI bus. This bridge is necessary because the B+ for these two ICs are different so the HB
bus and EMI bus are at different voltage levels. This often occurs in new design to match ICs. Bridge IC9205 also
acts as an expansion IC using SYS bus to perform driver (output) functions such as Output Enable (OE) for start
up data.
IC7205 (not shown) communicates with the main micro (B board) in the TV and contains the i Link OSD graphics
that are routed to OSD IC8801.
The eight LEDs and IC9201 driver are used in i Link software loading verification (not for servicing). The left LED
with the rear of the QI board facing you is the reset LED for the board. It lights up at reset. Reset occurs shortly
at power ON and just before the memory stick information gets processed.
Fire Wireis a trademark of Apple Computer Inc.
i Linkis a trademark of Sony.
IC9213-5
OSC/
DIVIDER
IC9203
CXD1945R
IC9202
CXD3203R
IC9210
FLASH
MEMORY
IC9211
FLASH
MEMORY
IC9212
START-UP
MEMORY
IC9209
uPD3020D
MIPS CPU
IC9206
MEM.
IC9205
uPD82442GN
BRIDGE IC
IC9201
LED
DRIVER
TEST
CONN.
CN9205
CN9203
CN9204
27MHz TO:
IC9202,
IC9203,IC9205,
IC9210-2,IC9209
TO
CN7002
QM BD.
A1-A12,
D0- D15
CN9201
XRST CN9201/A13
27MHz CLK
CN9201/B25
X9203
49MHz
TS BUS
IC7205
TS
BUS
DATA/
CLK
SYS
BUS
HB BUS
CE0 RESET
CE1 OE
HB BUS
3.3V
8 LED's
iLINK
PORTS
QI BOARD
EMI BUS
9/4/01
1TVP12 1319
FIGURE 2-12 - iLINK CIRCUITRY

8
3. DTV Signal Information
DTV Signal Information
Digital TV Transmissions
In addition to receiving the current channel 2-69 NTSC format TV stations and channel 01-125 cable stations,
theseTVsets contain anextratunertoreceiveoff-the-air channel 01-99 DigitalstationsintheATSCformat. DTV
channels 01-99 are mostly in the UHF band because the channel 2-13 VHF band is currently occupied with
analog NTSC stations.
During this transition period as the USA and Canada move from the current analog NTSC format to the digital
ATSC format, transmitting stations will be sending out both formats on two different channels. Some of the
current DTV transmissions are of low power to lower their operating costs of a second transmitter and the pro-
gramming is duplicated with sporadic HDTV transmissions. By now (2001), all major networks have DTV trans-
missions in the larger cities.
Signal Contents
You can determine the noise level and contents of the DTV signal being received by going to the service mode
and examining the transmitted PSIP information received by the TV’s decoder:
1. Enter the service mode: Using the remote control, press buttons: Display, 5, Volume +, Power On.
2. Select an active DTV station using the channel up/down buttons.
3. Use the 2 (up) or 5 (down) buttons to locate category DTV.
The WSL indicates signal strength like AGC. 0 = strong and 255 = snow.
4. Use the 3 or 6 buttons to change the data from 0 to 1.
5. Information about the received channel (similar to Figure 3-1) will be added to the screen from the Q box.
Figure 3-1
DTV Signal
Information
Contents of the DTV Signal
The Decoder Status page as pictured in Figure 3-1 reveals that:
•The DTV received channel is UHF channel (Phy Ch) 56, but the channel number displayed on the TV screen
is (Act) 2.1.
•The digital video decoding is (Fmt) MPEG2 and the audio decoding is (Fmt) AC-3.
•Closed caption (CC) levels 1and 2 are being sent
•The transmitted resolution is (Video Src) 1080i in the 16:9 aspect ratio.
•Although the audio decoding requested is AC-3, a 6-channel system, there are only two front channels en-
coded and no (0) rear channels sent (Audio Src: 2 / 0 LR).
DTV 0 0
InfoWSL = 0

9
3. DTV Signal Information
Signal Quality
You can also determine the quality of the received signal while still in the service mode. If the digital signal is
correct, the decoder will process the information and output audio and video in sync. If there are sunspots, rain,
or airplanes for example that can distort the signal the decoder will take longer to try to resolve the errors.
Therefore,the timethesignal entersand leaves thedecoder will belonger. This delay identifiesdigital reception
errors.
You can see the audio and video processing time in the service mode. From the service mode, select category
DTV. Use the remote’s number 3 button to change the data from 1 to 3.
The following audio and video data packet processing example shown in Figure 3-2 shows the packet number
going into the TV’s decoder (PTS) and what packet has been successfully processed (PCR). At the right is the
decoder processing time is given in ms. The greater the difference in packet number or processing time in ms,
the poorer the signal quality (since the decoder takes longer to try to resolve digital errors). A large number of
digital errors may be due to sunspots, airplanes, storms or transmission errors. The picture shown in Figure 3-2
is of a good quality signal.
Figure 3-2
Input/Output
Packet data

10
4. HA-3 Chassis Overall Block
HA-3 Chassis Overall Block
TheHA-3 TVchassisis the firstdirectview TVthatcontains aDTV decoder. Thisdecoder is identifiedasthe “Q”
box and is a shielded assembly within the TV. Currently only the KD-34XBR2 model houses the HA-3 chassis.
The major stages of the model KD-34XBR2 bridge several boards as shown in Figure 4-1. These stages are:
•Power supply (A, D and F boards)
•Video Processing Stage (B board)
•Deflection Stages (described in detail within the DTV-02 training manual) (D board)
8/30/01
IC9001-3
RGB
DRIVERS
H DRIVE
IC5004
VD
HV/
FBK
IC3101
Y/C
CRT
DRIVE
PRIM
P.S
ANALOG
TUNERS
IC401
A/V
SW.
DTV
TUNER
MID
DRC
ANALOG
VIDEO
PROCESS
MAIN
SYNC
SUB
SYNC
IC001
MAIN
MICRO
PRI-
PRE
HIGHER
VOLTAGES 200V
ON/OFF
RY6501
Q BD.
LOWER
VOLTAGES
H+V
SYNC
RGB
VIDEO A
VIDEO B
VIDEO
IN
(U, HB
BD.'s)
YOKE
Q BOX
TUNER
ATUNER
B
HV
HI
SCAN
VIDEO
HD VD
RGB
VD
HD
A BD.
F BD. D BD.
C BD.
43TVP12 1359
B BD.
SEC
P.S
FIGURE 4-1 - HA-3 CHASSIS OVERALL BLOCK
STANDBY
P.S
SPLITTER/
ISOLATOR
Power Supply
The power supply consists of three parts as shown in Chart 4-1:
Chart 4-1 -Model KD34XBR2 / HA-3 Chassis Power Supplies
Name Board Purpose
Standby FPowers Main Micro IC001 and AC relay. Outputs Standby 7 and 15Vdc
Primary AOutputs 12Vdc and lower voltages to the A, B and S boards. Outputs Pri-Pre 15V to start
the Secondary Power Supply.
Secondary DSupplies the deflection (D) board with the higher voltages such as 200V (HV), 135V (H
Defection), and 24V (audio).
The Primary power supply starts the secondary supply using a Pri-Pre 15V line. Once the Secondary power
supply operates, these voltages supply the deflection circuitry on the D board and the HV starts.

11
4. HA-3 Chassis Overall Block
Video Processing
This TV will accept standard resolution inputs or high-resolution inputs.
Standard Resolution Input – A standard resolution signal could be selected from either analog tuner (NTSC) or
any composite video 1-4 input. However, this high resolution TV runs at a different horizontal frequency of
33.75kHz than what is input. To view a standard NTSC signal (480i) that runs at 15,734 Hz on this TV, the video
signal must be improved and the horizontal sync more than doubled. The improvement is performed in the DRC
circuits and the sync conversion and picture sizing is done in the MID circuitry. Both of these circuits are part of
the Q box.
The Digital Reality Creation (DRC) Circuit analyzes each pixel of a line to add another line. Therefore, the DRC
circuit doubles the number of video lines of a standard NTSC signal. The DRC also doubles the horizontal sync
frequency before passing the signal onto the MID circuit on the same board.
The Multi Image Driver (MID) Circuit stores the lines and outputs the signal based on a new horizontal frequency
thatmatches the TV. Atthehigher frequency, thepicturefinishes before thescan. Blanklinesare addedas filler
by this MID stage before leaving the board.
The output of the Q box is a “Hi-Scan” (high-resolution) picture with separate H & V sync lines that are applied to
theY/C CRT DriveIC3101(A board). IC3101 convertsthecomponent video inputintoRGB for theCRTcathodes
and uses the sync input to lock the 60 Hz vertical oscillator and 33.75kHz horizontal oscillator.
HighResolution Input-Video inputs 5and6 areforY,Pr and Pbcomponent videosignal typesonly. They canbe
standard(480i) orhigh resolution(480p,720p or1080i)formats. The standard resolutionsignalmust beswitched
intothe DRCcircuitusing theMainpath (forupconversion), andthehigh-resolution signals mustbe sent intothe
MID circuit using the Sub path (for sizing and sync conversion).
The DTV tuner signal is also fed into the MID circuit (Q box). The MID circuit selects one input (or two of the
inputs when in the Twin mode) and outputs a single “Hi Scan” picture with corrected sync to match the 33.75kHz
TV frequency. The component video that outputs the Q box is applied to Y/C CRT Drive IC3101 on the A board.
This IC level shifts (matrixes) the signal into an RGB output signal for each CRT cathode.
Deflection Stages
Chart 4-2 shows the two stages that feed the deflection yoke.
Chart 4-2 –HA-3 Chassis Deflection Stages –D board
Stage Drive Source Power Supply Diagnostic Indication
Vertical Sweep Y/C CRT Drive IC3101 +15Vdc from the Secondary PS (D Bd) Blinks 4X
Horizontal Scan Y/C CRT Drive IC3101 +135Vdc from the Secondary PS (D Bd) Blinks 2X, 3X, or 7X
Vertical Sweep – Vertical drive signal comes from Y/C CRT Drive IC3101 synced to signal from the MID circuitry
on the QM board (in the Q box).
Horizontal Scan - Y/C CRT Drive IC3101 also develops H drive signal. The H drive is not only used to drive the
yoke, but also starts the HV Regulator stage.

12
5. HA-3 Chassis - Power ON Block
HA-3 Chassis - Power ON Block
Power Supplies
There are four power supplies in the HA-3 direct view TV chassis. These are listed in Chart 5-1 below:
Chart 5-1 -Model KD32XBR2 –HA-3 Chassis Internal Power Supplies
Name Board Start Purpose
Standby FAC Plug in 5V for Main Micro
7V & 15V for power relay
Primary APower ON (Voltage
from AC Relay
RY6501)
Unreg 11V, 7V, 5V become
regulated 9V, 5V, 3.3V.
Secondary DPrimary Pre 15V,
Main Relay (5V) +200V for HV stage, +135V
for H. Output, +15V, +24V
for Audio stage *
HV Converter
(not shown) DHoriz Output AFC- PLS (5Vp-p) 31.5kV HV for CRT, Focus voltage.
* see Chart 5-4 for the destination of output voltages
IC6002
REG
Q2006
PROT.
LATCH
Q6530
Q6532
IC003
RESET
IC001
MAIN MICRO
M306V2MF
STBY P.S.
T6703
D6702
7 8
69
44
45
50 46
32
1 3 11 2
5
7
FRONT PANEL
PWR (HA BD.)
OVP
OCP
STBY +5V
STBY
+15V
SOURCE
STBY +5V
AC
RELAY
D2007
D2008
STBY 7V
SOURCE
P.ON
(HA BD.)
TO STBY
LED
+
C2039
PRIM P.S
(A BD.)
SEC P.S
(D BD.)
F6701
6.3A
RY6501
AC
RELAY Q6527
SET
ON
S01
B+
OVP
B+ OCP
D6730
CN7003/
CN6503
CN3170/
CN6503
CN3171/
CN6506
D BD.
F BD. A BD.
B BD.
Q522
200V
OCP
D6537
D6501
D6709/
CN6502
C25
A25
C26
C28
CN3171/
CN6506
R5002
R6526
CN6709/
CN6501
8/30/0112TVP12 1330
FIGURE 5-1 - POWER ON 1/2
Except for the Standby power supply, the Primary, Secondary and HV Converter supplies are similar. The last
three supplies use the same IC in a similar configuration. They differ in how they are turned ON and their output
voltages.

13
5. HA-3 Chassis - Power ON Block
Each power supply is turned ON in the order listed. The standby power supply is operational when the TV is
plugged into AC. When the TV is powered ON, the second and third supplies are turned ON one after the other.
Thesesupplies powerthehorizontal stages. Finally,the fourth (HV)power supply isturned ON afterthe horizon-
tal output transformer develops scan (AFC pulses are used). The HV power supply is not shown on Figure 5-1,
but knowing when the HV is powered ON is important for troubleshooting.
Standby Power Supply
When the TV is plugged in, the standby power supply outputs three voltages: +15V, +7V and +5V. A small
transformer develops the +15V and +7V. The +7V is regulated down to +5V to power the Main MicroIC001.
Primary & Secondary Power Supplies
Before power ON can occur, the front panel master ON/OFF button (S01 on the HA board) must be pressed in.
ThislatchingswitchbehindthebuttonsuppliestheACrelay (RY6501) with standby 7V. Pressing the switch again
would unlatch the switch and the set would shut OFF.
Power ON can be activated either from the remote control or when the front panel button is latched in. The
second half of front panel switch S01 (not shown) grounds the power ON input to Main Micro IC001. IC001
powers ON the TV by turning on relay driver Q6527. Q6527 grounds one end of RY6501 relay coil and momen-
tarily turns on Q2006 via C2039. Q2006 supplies a higher +15V to AC relay RY6501 because a relay requires
more voltage to close the contacts than to hold them closed, especially if the AC input voltage is below normal at
that time. Once RY6501’s contacts close, D6730 is powered and 340V is applied to the Primary and Secondary
power supplies.
Primary Power Supply
Starting
This primary power supply only needs 340Vdc from the bridge rectifier D6530 to start up and run.
OutputVoltages
The Primary Power Supply outputs low voltages labeled “Sub” and “Q” voltages. The Q voltages go to the Q box
and the Sub voltages are distributed to the TV for operation. The Sub and Q voltages may be checked at the
board’s connector as shown in Chart 5-2.
Chart 5-2 –Primary Power Supply Output Voltage Checkpoints
Output Checkpoint Output Checkpoint
Sub 12V CN6002/pin 1 Q6.5V CN6005/pin 1, 2
Sub 9V CN4402/pin 7 or CN3020/pin C4, C5 Q9V CN6005/pin 6
Sub 5V CN3020/pin C6, C7 Q5V CN6005/pin 5
Sub 3.3V CN3020/pin C2, C3
The most important output voltage from the primary power supply is the “Pri Pre 15V” output. This volume
starts the Secondary power supply on the D board.

14
5. HA-3 Chassis - Power ON Block
Q8009
Q6520-
Q6524
IC6008
IC6006
IC6005
IC6004
IC6007
Q3170-
Q3172
LATCH
IC6001
PRIMARY
POWER SUPPLY
IC6501
SECONDARY
POWER SUPPLY
IC001
MAIN MICRO
M306V2MF
69 72 45 44
C26 A26 C25A25
1
2
Q6530
Q6522
LATCH
7 8 5 1
200V OCP
+200V
B+ OVP
B+ OCP
135V
+15V
-
+24V
SOURCE
B+ OVP B+ OCP
11V
7V
REGULATORS
AC FROM
CN6502/
CN6709
(F BD.)
RY 6501
AC RELAY
D6530
200V
OCP
B+ OCP
B+ OVP
STBY
5V Q522 STBY
LED
(FRONT
PANEL)
R6039
R6043
R5002
R017
100 R018
100
STBY 7V
FROM PW
SW.S01
(HA BD.) AC
RELAY
Q6527
R6526
O.1?
CN6504/
CN3170
MAIN
SW.
B+ OVP
CN3171/
CN6506
CN6003/
CN6501
PRI
PRE
15V
Q9V
SUB 9V
SUB 5V
SUB 3.3V
Q5V
Q6.5V
MAIN RELAY
D BD.
A BD.
B BD.
D BD.
50
0.1?
8/30/01
13TVP12 1331
SUB 12V
46 POWER ON
(HA BD.)
FIGURE 5-2 - DIAGRAM 13 - POWER ON 2/2
Secondary Power Supply
Starting
The Secondary Power Supply needs three items to operate. They are listed in Chart 5-3 below:
Chart 5-3 -Three voltages needed to run the Secondary Power Supply
Item From Purpose
1. 340Vdc (B+) Bridge Rectifier D6530 Powers the Driver/Output
2. Pri Pre 15V
voltage Primary Power Supply’s secondary winding Starts the oscillator when above 15.6Vdc.
3. Main Relay
(normally HIGH) Main Micro IC001 Enables IC6501 when HIGH

15
5. HA-3 Chassis - Power ON Block
OutputVoltages
This secondary power supply produces the remainder of the low voltages to power the TV. These are listed in
Chart 5-4.
Chart 5-4 -Secondary Power Supply Load
Output Protected Destination
200V Yes OCP D Board -HV Converter power supply
135V Yes. OVP, OCP D board -Horizontal stages
Sample voltage returned for regulation
+24V No D board -Makes Main 12, Main 9 and
Main 5V used throughout the D board *
+15V No A board -Audio output stage
* see Chart 5-1 for source of voltages
TV Power ON Sequence
1. Press the PWR ON button;
2. AC Relay energizes (RY6501);
3. Primary Power Supply starts (Q box is powered, Surge relay is energized);
4. Main Micro (B board) resets Q box (The Q box has flash memories for self initialization);
5. Q box acknowledges after initializing (TXD and RXD communications. See appendix);
6. MainMicro (Bboard) startstheSecondary PowerSupply (DeflectionandTV filamentsstart). The Secondary
power supply is started 100msec after power ON and independent of the Q box acknowledgment (step 5);
7. Main Micro (B board) retrieves information from the NVM ICs on the B communications bus and sends the
data to the appropriate TV operating ICs using the S communications bus;
8. HV starts after horizontal deflection operates (D board);
9. Shutdown circuitry is enabled (B board); and
10. IK circuitry (A board) adjusts the gain of the RGB amplifiers and unmutes the RGB signal to the CRT.

16
6. Primary Power Supply - HA-3 & RA-5a Chassis
Primary Power Supply (HA-3 & RA-5A Chassis)
The Primary and Secondary power supplies are similar in operation. They differ in schematic nomenclature
(component numbers) and output voltages. The HA-3 simplified secondary power supply is shown in Figure 6-1
for this description.
The primary power supply on the HA-3 chassis A board consists of three parts:
1. Oscillator 2. Output stage 3. Regulator Stage
The oscillator starts up to produce an initial signal for the output stage. The output stage develops voltage to
continue running the oscillator stage, supply the regulating stage, and provide normal output for the TV. One of
the normal TV outputs is used to start the secondary power supply.
PH6001
OPTICAL
ISOLATOR
R6023
R6020
N
CH
N
CH
IC6001
DRIVER
MCZ3001D
16
12
9
15
18
26 8 10 14
1
2
C6009
1
IC6003
ERROR DET.
uPC1093C
3 1
AC RECT.+
FROM
IC6501/1
(D BD.)
R6002
0.47 OHMS
R6010
R6001
R6003
R6004
R6006
C6007
VC1 VC2 VB F/B
OCP R6009
+
+
T6002
Q6002
Q6001
TIMER
R6018 R6019 R6041
R6045
D6016
C6014
D6011
D6012
D6018
D6014
PRI
PRE 15V (D
BD.)
UNREG.
7V SOURCE
UNREG. 11V
SOURCE
V
SENSE
340VDC
3V
1.86V
D6004
18V
A BD.
R6040
Q +6.5V
SOURCE
8/30/0123TVP12 1341
-32V
4.5V
10V -28V
OV
-32V
VD
VG(H)
VS
VG(L)
FIGURE 6-1 - PRIMARY POWER SUPPLY - HA-3 CHASSIS
Oscillator Start Up
The oscillator within IC6001 starts if the V Sense input voltage at pin 1 is above 1.3Vdc, but less than 8Vdc.
Sample voltage from pin 18 is then used to run the internal oscillator. The initial frequency is approximately
200kHz. The low amplitude initial oscillator signal is output IC6001/pins 12 and 16 into the driver/output stage.
Driver / Output stage
The oscillator voltage output at pins 12 and 16 use drivers Q6001 and Q6002 to develop T6002 secondary
voltages. IC6001’s oscillator will shut down if the driver transistor’s current is excessive. To prevent premature
shutdown, the timer capacitor C6007 delays the shutdown.

17
6. Primary Power Supply - HA-3 & RA-5a Chassis
VC1 Powers IC6001
Although the oscillator is running, at this initial frequency of 200kHz there is insufficient current from T6002 to
produce any unregulated 7V or 11V voltage because of the load. On the other hand, there is very little load on
D6011 and D6012, so they output about 15V each at the cathodes (normally about 18Vdc).
The voltage from D6011 is returned to IC6001/pin 8 (VC1) to serve as regulated B+ for the IC.
IC6001 Normal Operation
At start up, IC6001 initially uses current limited B+ from pin 18 to power internal drivers. These internal drivers
amplify the oscillator signal and get it out to pins 12 and 16. The power for the internal drivers initially come from
pin 18, but ultimately comes from pins 10 (VC2) and 14 (VB) when the power supply stage begins working. VC2
provides the voltage for the bottom driver (pin 12) while VB provides the voltage for the top driver (pin 16).
The VC2 voltage comes from the 18Vdc input VC1 (pin 8) that is internally regulated to 10Vdc. The 10Vdc from
VC2 is used to make VB voltage at pin 14. Because there is a square wave at pin 14 (internally from pin 15),
D6004 and C6009 are necessary to keep the DC voltage at pin 10 and the signal at pin 14 separate. D6004
brings +10V from pin 10 into VB pin 14 to power the top internal driver (pin 16).
Thereason VBpin14 measures–28is because pin14 starts atthesame voltageaspin 15(-32Vdc),but +10Vdc
is added from D6004. That brings the –32Vdc (+10V =) to -22. Because there is a 50% duty cycle square wave
at pin 14, the voltmeter averages the increase so only half of +10V is measured, producing approximately –32
+5V = -28V at VB pin 14.
The result is a VB voltage that is approximately +5V (average) above the reference voltage at IC6001/pin 15.
This voltage supplies the top internal driver that amplifies the oscillator signal that leaves IC6001/pin 16.
SecondaryPower SupplyStarting
The Pri Pre 15V output of the primary power supply (D6012) is used to enable the secondary power supply. At
startup, the primaryoscillator frequencyisHIGHso low secondaryvoltagesareoutput. Pri Pre15V isonly 10Vdc
at start up but rises to a normal 18Vdc. When it rises to 15.6Vdc, the Secondary Power Supply can start.
Therefore, the Secondary Supply cannot start until the Primary Supply is running normally.
Regulator Stage
Concept
By controlling the frequency of the power supply oscillator, T6002’s secondary output voltage can be regulated.
T6002’ssecondary output voltagesaredependent uponthe matchbetweenthe output resonatecircuit(T6002 =
L, C6019 = C) and the oscillator frequency. When IC6001’s oscillator frequency is the same as the resonate
circuit frequency, there is maximum power transferred in T6002, producing maximum output voltage. By setting
theoscillatorfrequency above resonance,T6002’s outputvoltagecan beregulated. SeeFigure 6-2 forthepower
output of power transformer T6002.
85kHz = Normal Operation
200kHz @ Start Up
T6002
Output
Frequency
Figure 6-2–
T6002 Output
Output Voltage Control
The regulating stage uses error detector IC6003 and optical isolator PH6001 to monitor the Q+6.5V output from
T6002. If the Q+6.5Voutput is LOW, as it is at initial start up (Chart 6-1), the voltage fed back to IC6001/pin 2
goes HIGH, decreasing the oscillator frequency. The decrease in frequency increases the output of the T6002
transformer, until +6.5Vdc is reached.
Chart 6-1 -Regulation Stage –Error Correction Voltages
Q+6.5V Output (D6016) PH6001/pin 2 IC6001/pin 2
Low High High