Toshiba 29SZ5DA User manual

SERVICE MANUAL
Color Television
29SZ5DA
29SZ5DE
29SZ5SH
29SZ5ST
S3ES Chassis
FILE NO. 060-200325
PRINTED IN MALAYSIA Dec. 2003 (YC/X)
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1/12/2014
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–8–
GENERAL ADJUSTMENTS
SERVICE MODE
1. ENTERING TO SERVICE MODE
S
(Service mode display)
Item
Data
3) While pressing the obutton,
press MENU button on TV set.
2) Press obutton again to
keep pressing.
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
A single horizontal line ON/OFF: - / - - button (on Remote) or abutton (on TV)
Test signal selection : abutton (on Remote)
Selection of the adjustment items : Channel s/t(on TV or Remote)
Change of the data value : Volume ;+/–(on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : CALL + Channel button on TV (s)
Reset the count of operating protect
circuit to “00”: CALL + Channel button on TV (t)
“RCUT”selection : 1 button
“GCUT”selection : 2 button
“BCUT”selection : 3 button
“CNTX”(or “SCNT”) selection : 4 button
“COLC”selection : 5 button
“TNTC”selection : 6 button
Test audio signal ON/OFF (1kHz) : 8 button
Self diagnostic display ON/OFF : 9 button
1) Press obutton once on
Remote Control.
Adjustment mode
Press
Press
Service mode
Item
Data
S
Color thickness correction
note: Displayed differently as shown below, de-
pending on the setting of the receiving color
system.
COLP (PAL)
COLC (NTSC)
COLS (SECAM)
CAUTION : Never try to perform initialization unless you have changed the memory IC.
* The key function marked with are not usable to control in the Test signal for some model.
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–9–
GENERAL ADJUSTMENTS
4. SELECTING THE ADJUSTING ITEMS
1) Every pressing of CHANNEL sbutton in the service mode changes the adjustment items in the order of table-2.
(tbutton for reverse order)
Refer to table-2 for preset data of adjustment mode.
(See SETTING & ADJUSTING DATAon page 15)
5. ADJUSTING THE DATA
1) Pressing of VOLUME ;+/–button will change the value of data in the range from 00H to FFH. The variable
range depends on the adjusting item.
6. EXIT FROM SERVICE MODE
1) Pressing POWER button to turn off the TV once.
■INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
1. Enter the service mode, then select any register item.
2. Press and hold the CALL button on the Remote, then press the CHANNEL sbutton on the TV. The initialization of QA02 has
been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform “Auto search Memory”on the owner’s manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
7. TEST SIGNAL SELECTION
1) Every pressing of abutton on the Remote Control changes the built-in test patterns on screen as described below
in SERVICE MODE.
Signals Picture
•Red raster
•Green raster
•Blue raster
•All Black
•All White
•Black & White
•Black cross-hatch
•White cross-hatch
•Black cross-dot
•White cross-dot
•Black cross-bar
•White cross-bar
•Black cross-bar
on green raster
•H signal (white)
•H signal (black)
* The signals marked with are not usable to display in the Test signal for some model.
Signal off NTSC signals (14 patterns)
PAL signals (14 patterns)
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GENERAL ADJUSTMENTS
8. SELF DIAGNOSTIC FUNCTION
1) Press “9”button on Remote Control during display of adjustment menu in the service mode.
The diagnosis will begin to check if interface among IC’s are executed properly.
2) During diagnosis, the following displays are shown.
23******
POWER : 00
BUS LINE : OK
BUS CONT : OK
BLOCK : UV V1 V2
V3 QV01
<SELF CHECK>
Part number of microprocessor (QA51)
Operation number of protecting circuit ----“00”is nor-
mal.
When indication is other than “00”, overcurrent apts to
flow, and circuit parts may possibly be damaged.
BUS LINE CHECK ----“OK”is normal.
“SDA1-GND”------------- SDA-GND short circuit.
“SCL1-GND”-------------- SCL-GND short circuit.
“SCL1-SDA1”------------- SCL-SDA short circuit.
BUS CONT ----“OK”is normal.
When indication shows “Q uuu NG”, the device with
the number may possibly be damaged.
BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (a1)
V2 : VIDEO 2 input mode (a2)
Indicated color of mode now selected : Green and Red
Indicated color of other modes : White
Green : Normal
Red :The microprocessor operates to provide judgement
of no video signal. The red color is still indicated
though the signal is input, failure may exist in input
signal line including QV01.
QV01 : In case of indication green ---Normal
In case of indication red with input signal----
Failure may exist in output line including QV01.
NOTE: Component which controls character display on
screen is QA51 (TELETEXT IC.). If this display
function fails to operate due to damage in QA51,
self diagnosis procedure is as follows.
(1) In case that power indicator is blinking with
interval of 0.5 seconds; it means protecting
circuit (Current limiter) is operating, and cir-
cuit components may possibly be damaged.
Check related components.
(2) In case that power indicator is blinking with
interval of 1 second; Protecting circuit does
not operate, but a part of Bus line does not
operate normally. Check Bus line.





* The items marked with are not usable to display in the SELF DIAGNOSTIC FUNCTION for some model.
V3: VIDEO 3input mode (a3)
–10 –
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GENERAL ADJUSTMENTS
DESIGN MODE
1. ENTERING TO DESIGN MODE
ITEM
DATA
S D Press
(Design mode) (Adjustment mode)
Press
3) Press MENU button on TV.
2) While pressing o(or CALL) button on
Remote and press MENU button on TV.
1) Select the Service mode.
2. SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL tbutton in the design mode changes the adjustment items in the order of table-3.
(sbutton for reverse order)
Refer to table-3 for data of design mode.
(See SETTING & ADJUSTING DATAon page 15)
3. ADJUSTING THE DATA
Pressing of VOLUME sor tbutton will change the value of data.
When QA02 is initialized, items “OPT0”and “OPT1”of DESIGN MODE are set to the data of the representative model of this
chassis family.
Therefore, because ON-SCREEN specification remains in the state of the representative of model. This model is required to
reset the data of items “OPT0”and “OPT1”.
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–12–
GENERAL ADJUSTMENTS
ELECTRICAL ADJUSTMENTS
1. Enter the service mode, then select any register item.
2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap-
pears on the screen.
3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture
screen.
FOCUS VR ADJ
SUB-BRIGHTNESS
(BRTC)
Note: Constrict the picture height
until the vertical retrace line
appears adjusting the item
HIT (HEIGHT).
1. Set CONTRAST to minimum, and
BRIGHTNESS to center by adjusting user
controls.
2. Set the TV in service mode to get white
cross-bar of inside pattern.
3. Select BRTC (brightness correction), and
adjust the ;–/+ button to reduce the
value so that white portion of inside pat-
tern slightly light.
4. Adjust ;–/+ button to increase the data
value of BRTC, and set it just before the
difference between the belt of vertical re-
trace and the border of black portion of
inside pattern is visible.
After that, return vertical height and con-
trast.
ITEM ADJUSTMENT PROCEDURE
Belt of vertical retrace
HORIZONTAL POSITION
ADJUSTMENT (HPOS)
VERTICAL POSITION
ADJUSTMENT (VPOS)
1. Set the TV in service mode, and get
black or white cross-bar signal with
VIDEO button on remote hand unit.
2. Select either HPOS (Horizontal pic-
ture phase) or VPOS (Vertical picture
phase) with CHANNEL s, tbuttons,
and adjust horizontal or vertical pic-
ture position in the center of screen
with VOLUME ;–/+ buttons.
VERTICAL AMPLITUDE
ADJUSTMENT (HIT)
1. Set the TV in service mode, and get
black or white cross-hatch signal with
VIDEO button on remote hand unit.
2. Select HIT (Vertical amplitude) with
CHANNEL s, tbuttons, and adjust
vertical amplitude with VOLUME
;–/+ buttons so that vertical am-
plitude lacks a little.
3. Adjust vertical amplitude with VOL-
UME ;–/+ buttons so that the first
bar on cross-hatch signal touches
edge of screen.
The first
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–13–
GENERAL ADJUSTMENTS
ITEM ADJUSTMENT PROCEDURE
WHITE BALANCE
ADJUSTMENT
•CUTOFF ADJUSTMENT
(RCUT)
(GCUT)
(BCUT)
•DRIVE ADJUSTMENT
(GDRV)
(BDRV)
1. Set Contrast to 40, and brightness to +20 by picture control.
2. Set the TV in service mode, and get the inside W/B adjusting signal with VIDEO
button.
3. Select RCUT, GCUT and BCUT with CHANNEL s, tbuttons, to set individual
values to Initial reference data, and to set GDRV and BDRV to Initial reference
data with VOLUME ;–/+ buttons (See page 19).
4. Press -/- - button on the remote control and rotate Screen VR to get one slight
horizontal line on screen.
Note: Every pressing of -/- - button provides Horizontal line picture and Normal
picture alternately.
5. Press -/- - button to release horizontal line picture, and select the two other colors
which did not light in the above step with CHANNEL s, tbuttons. Then tap VOL-
UME ;–/+ buttons so that three colors slightly light in the same level.
XTo correct white balance in light area,
select GDRV and BDRV with CHANNEL
s, tbuttons to adjust.
XTo correct white balance in dark area,
perform fine adjustment of RCUT, GCUT
and BCUT.
Light area check
(to show white)
Dark area check
(to show black)
NOTE: It is released built-in test pattern by changing the adjustment item for some model.
In this case, select the adjustment item with channel st button first and then select the built-in test pattern
with -/- - button.
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–14–
GENERAL ADJUSTMENTS
CIRCUIT CHECK
HIGH VOLTAGE CHECK
CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on this chassis. Checking should be done following the steps
below.
1. Connect an accurate high voltage meter to the second anode of the picture tube.
2. Turn on the receiver. Set the BRIGHTNESS and CONTRAST controls to minimum (zero beam current).
3. High voltage must be measured below (B) kV.
Refer to table-1 for high voltage (B).
(See SETTING & ADJUSTING DATAon page 15)
4. Vary the BRIGHTNESS control to both extremes to be sure the high voltage does not exceed the limit under any conditions.
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– 15–
SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA
29"
HIGH VOLTAGE AT ZERO BEAM: (A) 32.8 kV
MAX HIGH VOLTAGE: (B) 33.0 kV
AC VOLTAGE (C) 110~240 V
CHAPTER 2 SPECIFIC INFORMATIONS
SAFETY INSTRUCTIONS
Table-1
SERVICE MODE
ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE:
DESIGN MODE
ADJUSTING ITEMS AND DATAS IN THE DESIGN MODE:
Item Name of adjustment Preset Data Data Remarks
OPT 1 OPTION 1 05H 22H
OPT 2 OPTION 2 10H 1DH
Table-3
Item Adjustment Reference data
RCUT
GCUT
BCUT
GDRV
BDRV
BRTC
COLC
TNTC
COLP
COLS
SCNT
HPOS
VPOS
HIT
VLIN
WID
PARA
TRAP
BELL
SRY
SBY
R CUTOFF H
G CUTOFF H
B CUTOFF H
G DRIVE H
B DRIVE H
SUB BRIGHT CEN
SUB COLOR CEN NTSC
SUB TINT CEN
SUB COLOR CEN PAL
SUB COLOR CEN SECAM
SUB CONTRAST
50Hz H-POSITION
V-POSITION
HEIGHT
V-LINEARITY
PICTURE WIDTH
E-W PARABOLA
TRAPEZIUM
SECAM BELL FILTER
SECAM R-Y
SECAM-B-Y
04H
04H
04H
RDRV R DRIVE H 07H
07H
07H
80H
80H
40H
F6H
F6H
07H
12H
03H
20H
07H
2CH
2BH
0BH
01H
08H
08H
Table-2
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–16–
2
1
(1) Video 1 input terminals
MONITOR output terminals
(2) DVD/Video 2 input terminals
COMPONENT VIDEO INPUT terminals
Aerial input
zPower switch
zPower indicator (red)
Y
ON-timer indicator (green)
tcs
Channel select
Menu item select
aInput source selection
a(3) Video 3 input
terminals
Headphones jack (ø3.5 mm)
For private listening, connect headphones.
The sound from the speakers will be cut off
automatically.
To adjust the volume, press the –;+ buttons.
Behind the door
MENU
–;+
Volume down/up
Menu item adjust
Remote sensor
SPECIFIC INFORMATIONS
Front
Back
LOCATION OF CONTROLS
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