Toshiba 43A10 User manual

TOSHIBA CORPORATION
1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
FILE NO. 023-200023
SERVICE MANUAL
PUBLISHED IN JAPAN. Jul., 2000 So
COLOR TELEVISION
N0NSP Chassis
43A10 , 43AX60
(TAC0054) (TAC0057)
– SUMMARY –
43A10, 43AX60 are the same as 50A60 except for the parts and bus data of micro-processor, Con-
vergence ajustment and Mechanical disassembly tabled on back of this sheet.
Use this service manual together with the service manual of 50A60, 50A50, 55A60, 61A60
(File No. 020-200012).

– 2 –
SETTING & ADJUSTING DATA DIFFERENCES
SERVICE MODE
ADJUSTING ITEMS AND DATA INTHE SERVICE MODE:
Item Name of adjustment Preset Data
HIT
VSC
WID
LIN
PARA
TRAP
5EH
0EH
29H
11H
26H
20H
V-HEIGHT
V-S CORRECTION
PICTURE WIDTH
V-LINEARITY
E-W PARABOLA(DPC)
TRAPEZIUM
64H
10H
28H
12H
29H
10H
Table-2
DESIGN MODE
ADJUSTING ITEMS AND DATA IN THE DESIGN MODE:
Item Name of adjustment Preset Data Data
C1H
03H
OPT1
OPT2 80H 00H
OPTION 1
OPTION 2
Table-3

– 3 –
CONVERGENCE ADJUSTMENT
Adjust convergence from center to circumference in order.
RCUT
40H
2. Press “7” button to display the built-in cross-hatch pattern.
1. Select the adjustment mode following the steps on page 9 of original
service manual.
Cursor
21.5 (43")
26.5 (50")
28.5 (55")
31.0 (61")
P = 43.7 x14 (43")
50.5 x14 (50")
55.8 x14 (55")
62 x14 (61")
KEY FUNCTION IN THE
CONVERGENCE ADJUSTMENT:
Up : 2 button
Selet Green color: 3 button
Left : 4 button
Blinking of cursor ON/OFF: 5 button
Right: 6 button
Adjust mode ON/OFF: 7 button
Down: 8 button
Erase Green line: 0 button
Erase Red line: 100 button
Erase Blue line: CHRTN (ENT) button
21.5 (43")
26.5 (50")
28.5 (55")
31.0 (61")
3.5 (43", 50")
4.0 (55")
5.0 (61")
P = 72.2 x12 (43")
84 x12 (50")
92.5 x12 (55")
102.5 x12 (61")
The pattern includes three colors (R, G, B).
The cursor should be blinking in Red.
This means that the Red color is adjustable.
Adjustment around cursor can be done.
3. Press “3” button to select Green color to be adjusted.
4. Press “5” button to stop the blinking of cursor.
5. Press “2 (up)”, “8 (down)”, “4 (left)” or “6 (right)” to obtain the correct
cross-hatch pattern as above.
If necessary, the specified color line can be erased from the screen.
100 button .................. to erase Red line
0 button .................. to erase Green line
RTN (ENT) button .................. to erase Blue line
6. Press “5” button to make the cursor blinking.
7. Press “2”, “8”, “4”, “6” buttons to move the cursor to other point to be
adjusted.
8. Repeat steps 4 to 7.
9. Repeat steps 3 to 8 to adjust Red and Blue colors.
Converge the selected color line into the Green line.
10. Press “7” button to enter the adjusted states.
At this time, picture changes for about 1 second.
11. Press “7” button again to return to the normal picture.
Note:
Adjusting procedure in replacing conver-
gence board.
1. User convergence center check. Make
sure the best convergence setting is
about the center of adjustable range.
2. CENTERING ADJUSTMENT
3. PICTURE POSITION ADJUSTMENT
4. HIT, WID ADJUSTMENT
5. CONVERGENCE ADJUSTMENT
3.5 (43", 50")
4.0 (55")
5.0 (61")

– 4 –
MECHANICAL DISASSEMBLY
K502
K501
K503 LABELS
K601
A420
A201
A251
A254
(A257) (A258)
A103
A202 A102
K111
K112
K113
A101
20 SCREWS
SCREWS
9 SCREWS
4 SCREWS
11 SCREWS
4 SCREWS
SCREWS
6 SCREWS
A424

– 5 –
REPLACEMENT PARTS LIST DIFFERENCES
Location
No. Part No. Description
A101 23465852 Wood Cabinet
A102 23519892 Speaker Grille, R (43A10)
A102 23527147 Speaker Grille, R (43AX60)
A103 23519893 Speaker Grille, L (43A10)
A103 23527148 Speaker Grille, L (43AX60)
A201 23510392 Bezel (43A10)
A201 23540142 Bezel (43AX60)
A202 23450265 Control Panel (43A10)
A202 23450274 Control Panel (43AX60)
A251 23427384 Door (43A10)
A251 23427844 Door (43AX60)
A254 23445157 Knob, Power (43A10)
A254 23445424 Knob, Power (43AX60)
A255 23564376 Label
A257 23836492 Spring
A258 23451976 Push Catch
A420 23427355 Back Cover
A424 23540128 Back Board
A701 23525619 Case (43A10)
A701 23525654 Case (43AX60)
A703 23935778 Packing, Top
A708 23935779 Packing, Bottom
C477 24082943 PF, 3600pF, ±3%, 1500V
C621 24085960 EL, 4.7?F, ±20%, 50V,
Non-Polar (43A10)
C636 24085960 EL, 4.7?F, ±20%, 50V,
Non-Polar (43A10)
C646 24815223 Chip, 0.022?F, ±10%
C647 24815473 Chip, 0.047?F, ±10%
C648 24815333 Chip, 0.033?F, ±10%
C664 24669479 EL, 4.7?F, ±20%, 50V
CV10 24794100 EL, 10?F, ±20%, 16V
CV11 24232103 CD, 0.01?F, +80%, _20%, 50V
CV12 24232103 CD, 0.01?F, +80%, _20%, 50V
CZ01 24797478 EL, 0.47?F, ±20%, 50V
(43A10)
CZ02 24794101 EL, 100?F, ±20%, 16V (43A10)
CZ03 24092398 CD, 0.01?F, +80%, _20%, 25V
(43A10)
CZ04 24476103 CD, 0.01?F, ±30%, 16V
(43A10)
CZ05 24476103 CD, 0.01?F, ±30%, 16V
(43A10)
CZ06 24476103 CD, 0.01?F, ±30%, 16V
(43A10)
CZ07 24794101 EL, 100?F, ±20%, 16V (43A10)
CZ09 24567103 PF, 0.01?F (43A10)
CZ11 24567103 PF, 0.01?F (43A10)
CZ12 24474181 Chip, 180pF, ±10% (43A10)
CZ13 24476103 CD, 0.01?F, ±30%, 16V
(43A10)
CZ14 24476103 CD, 0.01?F, ±30%, 16V
(43A10)
CZ15 24473560 CD, 56pF (43A10)
CZ16 24473470 CD, 47pF (43A10)
CZ18 24092398 CD, 0.01?F, +80%, _20%, 25V
(43A10)
CZ19 24794330 EL, 33?F, ±20%, 16V (43A10)
CZ23 24092398 CD, 0.01?F, +80%, _20%, 25V
(43A10)
CZ27 24436080 CD, 8pF, ±0.25pF (43A10)
Location
No. Part No. Description
CZ28 24436151 CD, 150pF, ±0.25pF (43A10)
CZ29 24436151 CD, 150pF, ±0.25pF (43A10)
CZ30 24436101 CD, 10pF, ±0.25pF (43A10)
DB11 23358501 Diode (LED), SCL003URC5F
DB14 23118859 Diode, 1SS133
*E031Z CRT-D/R Board, PB9454C1
(43A10)
*E031Z CRT-D/R Board, PB9454F1
(43AX60)
*E032Z CRT-D/G Board, PB9454C2
(43A10)
*E032Z CRT-D/G Board, PB9454F2
(43AX60)
*E033Z CRT-D/B Board, PB9454C3
(43A10)
*E033Z CRT-D/B Board, PB9454F3
(43AX60)
*E034Z FRONT-CON Board, PB9454C8
(43A10)
*E034Z FRONT-CON Board, PB9454F8
(43AX60)
*E035Z FRONT-IN Board, PB9454C9
(43A10)
*E035Z FRONT-IN Board, PB9454F9
(43AX60)
*E036Z SVM Board, PB9454C6
(43A10)
*E036Z SVM Board, PB9454F6
(43AX60)
*E037Z 2L-COMB Board, PB9454C7
(43A10)
*E040Z REM Board, PB9454C10
(43A10)
*E040Z REM Board, PB9454F10
(43AX60)
K111 23430512 Delta, 67-A/B Assembly
K112 23430512 Delta, 67-A/B Assembly
K113 23430512 Delta, 67-A/B Assembly
K501 23430786 Lenti Sheet, SCREEN43KK-L
K502 23837526 Fresnel Sheet, SCREEN43KH-F
K503 23430776 CONT-SCR43DK
K601 23430514 Mirror, MIRROR43H (43A10)
K601 23430601 Mirror, MIRROR43J (43AX60)
K912 23306359 Remote Hand Unit, CT-90037
(43A10)
K912 23306370 Remote Hand Unit, CT-90047
(43AX60)
K912A 23101998 Battery, R6KGT SP-2T (43A10)
L407 23248196 Coil, Choke, TLN3457AD
LV19 23238705 Coil, Peaking, TRF4560AJ
LZ01 23289330 Coil, Peaking, TRF4330AF
(43A10)
LZ02 23103880 Coil (Ferrite Bead), TEM2011Y
(43A10)
LZ03 23289339 Coil, Peaking, TRF43R3AF
(43A10)
LZ04 23103880 Coil (Ferrite Bead), TEM2011Y
(43A10)
LZ05 23289100 Coil, Peaking, TRF4100AF
(43A10)

– 6 –
Location
No. Part No. Description
Location
No. Part No. Description
LZ06 23289270 Coil, Peaking, TRF4270AF
(43A10)
LZ08 23289159 Coil, Peaking, TRF41R5AF
(43A10)
LZ09 23289339 Coil, Peaking, TRF43R3AF
(43A10)
PB21 23368580 Plug, 6P
PV04 23365819 Jack, 1S3P
PV59 23367069 Plug, 9P
PZ01 23368006 Plug, 8P (43A10)
PZ02 23902064 Socket, 8P (43A10)
QA01 23000443 IC, MN102L35GFC (43AX60)
QB11 23114528 Transistor, 2SC1740S-Q
QZ01 23906207 IC, TC90A45P (43A10)
QZ02 23114528 Transistor, 2SC1740S-Q
(43A10)
QZ03 23114528 Transistor, 2SC1740S-Q
(43A10)
QZ04 23114528 Transistor, 2SC1740S-Q
(43A10)
R416 24533102 FR, 1k ohm, 2W
R435 24322278 MF, 0.27 ohm, 1W (43AX60)
R601 24872682 Chip, 6800 ohm, 1/16W
R602 24872682 Chip, 6800 ohm, 1/16W
R603 24872562 Chip, 5600 ohm, 1/16W
R604 24872562 Chip, 5600 ohm, 1/16W
R611 24872332 Chip, 3300 ohm, 1/16W
R612 24872332 Chip, 3300 ohm, 1/16W
R900 24000945 FR, 1.8 ohm, 2W (43AX60)
RA81 24366683 CF, 68k ohm
RA82 24366223 CF, 22k ohm
RA83 24366103 CF, 10k ohm
RA86 24366822 CF, 8200 ohm
RA87 24366153 CF, 15k ohm
RA88 24366273 CF, 27k ohm
RB11 24366271 CF, 270 ohm
RB14 24366103 CF, 10k ohm
RV16 24366750 CF, 75 ohm
RV17 24366750 CF, 75 ohm
RV18 24366750 CF, 75 ohm
RV19 24366332 CF, 3300 ohm
RZ01 24366101 CF, 100 ohm (43A10)
RZ02 24366221 CF, 220 ohm (43A10)
RZ03 24366102 CF, 1k ohm (43A10)
RZ04 24366102 CF, 1k ohm (43A10)
RZ05 24366821 CF, 820 ohm (43A10)
RZ08 24366102 CF, 1k ohm (43A10)
RZ09 24366221 CF, 220 ohm (43A10)
RZ10 24366101 CF, 100 ohm (43A10)
RZ11 24366680 CF, 68 ohm (43A10)
SA11 23145226 Switch, Push, 1C1P
SA12 23145226 Switch, Push, 1C1P
SA13 23145226 Switch, Push, 1C1P
SA14 23145226 Switch, Push, 1C1P
SA15 23145226 Switch, Push, 1C1P
SA16 23145226 Switch, Push, 1C1P
SA17 23145226 Switch, Push, 1C1P
SA18 23145226 Switch, Push, 1C1P
*U701 23784783 DIGI-CONV Board, PB9453D
*U801 DEF/Power Board, PB9451C
(43A10)
*U801 DEF/Power Board, PB9451D
(43AX60)
*U901 Signal/CON Board, PB9450E
(43A10)
*U901 Signal/CON Board, PB9450H
(43AX60)
*UV01 A/V Board, PB9452C (43A10)
*UV01 A/V Board, PB9452E (43AX60)
UY01 23148736 Module, MKMU31 (43AX60)
UZ01 23148718 Module, YMCJ31 (43AX60)
* V901R 23003591 Coupling, R43 (43A10)
* V901R 23005446 Coupling, R (43AX60)
* V902G 23005423 Coupling, G43 (43A10)
* V902G 23005447 Coupling, G (43AX60)
* V903B 23003593 Coupling, B43 (43A10)
* V903B 23005448 Coupling, B (43AX60)
W661 23351131 Speaker, SPK-1390
W662 23351131 Speaker, SPK-1390
Y101 23563954 Owner's Manual, English,
43A10
Y101 23563956 Owner's Manual, English,
43AX60
Y101F 23563955 Owner's Manual, French,
43A10
Y101F 23563957 Owner's Manual, French,
43AX60
Z410 23110842 Focus Pack, TPA6031
(43AX60)

– 7 –
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MEMO

TOSHIBA CORPORATION
1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
FILE NO. 023-200023
SERVICE MANUAL
PUBLISHED IN JAPAN. Jul., 2000 So
COLOR TELEVISION
N0NSP Chassis
43A10 , 43AX60
(TAC0054) (TAC0057)
– SUMMARY –
43A10, 43AX60 are the same as 50A60 except for the parts and bus data of micro-processor, Con-
vergence ajustment and Mechanical disassembly tabled on back of this sheet.
Use this service manual together with the service manual of 50A60, 50A50, 55A60, 61A60
(File No. 020-200012).

TOSHIBA CORPORATION
1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
FILE NO. 020-200012
SERVICE MANUAL
PUBLISHED IN JAPAN, May., 2000 S
COLOR TELEVISION
N0NSP Chassis
50A60 , 50A50
55A60
, 61A60
(TAC0050)
(TAC0052)
(TAC0051)
(TAC0053)

– 2 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
TABLE OF CONTENTS
CHAPTER 1 GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS ........................................................................................................................................3
CRT ASSEMBLY REPLACEMENT AND MOUNTING .............................................................................................4
PICTURE TUBE COMPONENTS ADJUSTMENT....................................................................................................6
REPLACEMENT OFTHE CRT.................................................................................................................................8
SERVICE MODE ......................................................................................................................................................9
ELECTRICAL ADJUSTMENT ................................................................................................................................11
CONVERGENCE ADJUSTMENT ..........................................................................................................................13
SCREEN AND MIRROR ALIGNMENTS ................................................................................................................15
CIRCUIT CHECKS .................................................................................................................................................16
CHAPTER 2 SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA ..............................................................................................................................17
LOCATION OF CONTROLS...................................................................................................................................18
PROGRAMMING CHANNEL MEMORY.................................................................................................................20
CIRCUIT BLOCK DIAGRAM ..................................................................................................................................21
MECHANICAL DISASSEMBLY ..............................................................................................................................23
CHASSIS REPLACEMENT PARTS LIST ...............................................................................................................25
PC BOARDS BOTTOM VIEW.................................................................................................................................41
TERMINAL VIEW OF TRANSISTORS ...................................................................................................................51
SPECIFICATIONS ..................................................................................................................................................53
APPENDIX:
CIRCUIT DIAGRAM

– 3 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics.These characteristics are
often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc.Replacement parts which have these special safety charac-
teristics are identified in this manual and its supplements; electrical components having such features are identified by the
international hazard symbols on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual carefully.The use of substitute replacement
parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, X-ray radia-
tion or other hazards.
PRODUCT SAFETY NOTICE
CHAPTER 1 GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU-
TION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW.
Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15
µF,ACtypecapacitor, betweenaknowngoodearth ground
(water pipe, conduit, etc.) and the exposed metallic parts,
one at a time. Measure the AC voltage across the combi-
nation of 1500 ohm resistor and 0.15 µF capacitor. Re-
verse the AC plug at the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Voltage
measuredmustnotexceed0.3voltsrms.This corresponds
to 0.2 milliamp. AC. Any value exceeding this limit consti-
tutes a potential shock hazard and must be corrected im-
mediately.
WARNING :Service should not be attempted by anyone unfa-
miliar with the necessary precautions on this receiver.The fol-
lowing are the necessary precautions to be observed before
servicing this chassis.
1. AnisolationTransformershould be connectedinthe power
line between the receiver and the AC line before any serv-
ice is performed on the receiver.
2. Always discharge the picture tube anode to the CRT con-
ductive coating before handling the picture tube. The pic-
turetubeis highly evacuatedandif broken,glassfragments
will be violently expelled. Use shatter proof goggles and
keep picture tube away from the unprotected body while
handling.
3. When replacing a chassis in the cabinet, always be cer-
tain that all the protective devices are put back in place,
such as; non-metallic control knobs, insulating covers,
shields, isolation resistor-capacitor network etc.
4. Before returning the set to the customer, always perform
anACleakagecurrentcheckon the exposed metallic parts
of the cabinet, such as antennas, terminals, screwheads,
metal overlays, control shafts etc.to be sure the set is safe
to operate without danger of electrical shock. Plug the AC
line cord directly into a 120V AC outlet (do not use a line
isolation transformer during this check). Use an AC volt-
meter having 5000 ohms per volt or more sensitivity in the
following manner:
AC VOLTMETER
0.15µF
Good earth ground
such as a water
pipe, conduit, etc.
Place this probe on
each exposed
metallic part.
1500 ohm
10 watt
SAFETY PRECAUTION
1. Excessive highvoltagecan produce potentiallyhazardous
X-RAY RADIATION.To avoid such hazards, the high volt-
age must not be above the specified limit. The nominal
value of the high voltage of this receiver is (A) kV at zero
beam current (minimum brightness) under a 120V AC
power source. The high voltage must not, under any cir-
cumstances, exceed (B) kV.
Refer to table-1 for high voltage (A), (B).
(See SETTING & ADJUSTING DATA on page 17)
Each time a receiver requires servicing, the high voltage
should be checked following the HIGH VOLTAGE CHECK
procedurein this manual.It isrecommendedthat the read-
ing of the high voltage be recorded as a part of the service
record.It is important to use an accurate and reliable high
voltage meter.
2. Thisreceiverisequippedwith a FailSafe(FS) circuit which
prevents the receiver from producing an excessively high
voltage even if the B+ voltage increases abnormally.Each
timethereceiveris serviced,the FS circuit mustbechecked
to determine that the circuit is properly functioning, follow-
ing the FS CIRCUIT CHECK procedure in this manual.
3. The only source of X-RAY RADIATION in this TV receiver
is the picture tube.For continued X-RAY RADIATION pro-
tection, the replacement tube must be exactly the same
type tube as specified in the parts list.
4. Somepartin thisreceiverhave specialsafety-related char-
acteristics for X-RAY RADIATION protection. For contin-
ued safety, parts replacement should be undertaken only
after referring to the PRODUCT SAFETY NOTICE below.
X-RAY RADIATION PRECAUTION

– 4 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
CRT ASSEMBLY REPLACEMENT AND MOUNTING
CAUTION : DO NOT LOOSENTHE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSETHOSE ARE FOR
SEALING OF CRT COOLANT.
Lens and Neck ComponentsView
Attention Serviceman
The Hex Head
Bolts with
Springs. (see
sketch) used on
CRT assembly,
are “NOT”
Adjustment Screws
DO NOT LOOSEN-FLUID
LEAKAGE WILL OCCUR.
8 o’clock
4 o’clock
4 Screws
CRT Anode Cap Assembly
S.V.M. Coil
CRT DRIVE Board
Lens Assembly
CRT Assembly
DeflectionYoke and ConverYoke
CRT Mounting
4 Screws
RGB

– 5 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
TO REMOVE CRT (Same procedure for R, G, B)
1. Remove CRT DRIVE Board, S.V. M. COIL and
DEF.YOKE from CRT.
2. Remove Lens Assembly.
3. Detach CRT Anode Cap from CRT.
4. Remove CRT Assembly from CRT Mounting.
CRT REPLACEMENT (Same procedure for R, G, B)
Reverse the removal procedures except the followings.
1. Anode Cable should be replaced with new one.
See “SERVICING PRECAUTIONS” shown below.
2. Install silicon (T461B) to the CRT, replace the Anode
cable and put enough silicon again on around the An-
ode Cap as illustrated.
CAUTION: Align the Anode cable as illustrated on page
4.
ADJUSTING PROCEDURE IN REPLACING CRT
1. R.G.B. FOCUS ADJUSTMENT (page 6.)
2. PICTURE TILT ADJUSTMENT (page 6.)
3. USER CONVERGENCE CENTER CHECK
(See owner's manual.)
4. CENTERING ADJUSTMENT (page 6.)
5. CONVERGENCE ADJUSTMENT (page 13.)
6. WHITE BALANCE ADJUSTMENT (page 12.)
Adjustments are complete.
SERVICING PRECAUTIONS
■Check the point of anode lead in a straight
line, if it is winding, please revise it.
Anode lead holder
■Do not use a magnetized screw driver for screws
of DeflectionYoke andVelocity Modulation Coil to
avoid magnetization of electron gun.
Magnetization of electron gun will degrade basic
function and result in unbalance of right and left
shift of user static convergence, and result in no
variable quantity.
■When replacing the anode cap assembly (CRT) or
anode lead assembly (F.B.T.), remove the anode
lead holder from old one and attach the holder
again to new anode lead.
Screw for
D.Y
Screw for SVM coil
Anode Cap
Silicon
(On shaded area)
TSE3843W #23960136
2 ~ 5 mm
15 ~ 25 mm

– 6 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
WARNING : BEFORE SERVICINGTHIS CHASSIS, READTHE“X-RAY RADIATION PRECAUTION”,“SAFETY PRE-
CAUTION” AND “PRODUCT SAFETY NOTICE”ON PAGE 3 OFTHIS MANUAL.
PICTURE TUBE COMPONENTS ADJUSTMENT
DESCRIPTION OF NECK COMPONENTS TILT ADJUSTMENT
Rotate R, G, B deflection yoke so that picture becomes
horizon, then fasten screw.
CENTERING ADJUSTMENT
1. Stretch a thread between two center slots of screen
edge (top and bottom, left and right).
2. Select the adjustment mode.
3. PressTV/VIDEO button on the Remote Control to dis-
play the white cross-bar.
4. Perform VCEN adjustment.(See page 11.)
5. Adjust G centering magnet so that the cross-bar pat-
tern center comes to screen center.
6. Perform HEIGHT adjustment . (See page 12.)
7. Perform VERT. LINEARITY adjustment.
8. Perform WIDTH adjustment.(See page 12.)
9. Check whole quality of green line.
10 . AdjustR, B centeringmagnet sothatthecross-bar pat-
tern center comes to screen center.
1Deflection yoke and convergence yoke
The position on the neck is required most front
(CRT funnel side) and the screw is fastened after
rotating yoke adjusting picture tilt.
2Centering magnet
After adjusting picture tilt, picture position is finally
fixed by this magnet.
In order to get maximum margin of user conver-
gence control for center of screen, this magnet
have to be used for center convergence adjust-
ment.
PREPARATION
Operate the receiver for at least 5 minutes.
R, G, B FOCUS ADJUSTMENT
1. Before adjusting the R, G, B FOCUS, remove the 4
screws of Lens Assembly which is fixed on the CRT
Assembly. (See page 4.)
Then turn around the Lens Assembly by 180˚ to adjust
the fastening screw (Fig.a) and fasten the 4 screws to
secure Lens Assembly.
2. Select the adjustment mode.(See page 9.)
3. Press “7” button to display the built-in cross-hatch.
4. Press“0” and“RTN”buttons to make the picture a sin-
gle Red color.
100 button ............... to erase Red color
0 button ............... to erase Green color
RTN button ............... to erase Blue color
5. Loosen the fasten screw and adjust Red lense focus
to best focusing point of picture center. Then fasten
the screw. (See Fig.a.)
Fig. a
6. Adjust FOCUS VR “R” of FOCUS PACK to find best
focusing point of picture center.
7. Repeat steps 3 to 5 for Green and Blue colors.
1
2

– 7 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
LOCATION OF SCREEN AND FOCUS VR’S
SCREEN VR
FOCUS VR
RGB

– 8 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
REPLACEMENT OFTHE CRT
Service parts are provided for each R, G and B.
The contents of the parts are as follows.
RGB
50A50 23796001 23005397 23796003
50A60 23005114 23005115 ↑
55A60 23005242 ↑↑
61A60 23005249 ↑23796486
REPLACEMENT OF HIGHVOLTAGE CABLE
ANODE LEAD
RUBBER BOOT
LEAD HOLDER
Z450 TPA5007
Fig. a
1. When replacing Anode Lead or Anode Cap with new
one, remove Lead Holder from old lead as shown in
figurebelow, and putiton newlead.Do notthrowaway
Lead Holder.
NOTE : THE LEAD HOLDER IS ATTACHED TO
TPA5007 (Z450),BUT IS NOT ATTACHEDTO
ANODE LEAD AND ANODE CAP. RUBBER
BOOT IS ATTACHEDTO ANODE LEAD AND
ANODE CAP.
2. Detaching Lead Holder
RUBBER BOOT OLD
ANODE LEAD
or
ANODE CAP
LOCK LEAD HOLDER Cut here rubber boot
and lead together to
detach Lead Holder.
Fig. b
HITACHI
CRT

– 9 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
SERVICE MODE
1. ENTERING TO SERVICE MODE
MUTE
S
(Service mode display)
3) While pressing the MUTE button,
press MENU button onTV set.
2) Press MUTE button
again to keep pressing.
1) Press MUTE button once
on Remote Control.
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button onTV.
Adjustment mode
Press
Press
Service mode
Item
Data
S
3. KEY FUNCTION INTHE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF: TV (ANT)/VIDEO button (onTV)
Selection of the adjustment items : Channel s/t(on TV or Remote)
Change of the data value : Volume s/t(on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : RECALL+Channel button onTV (s)
Initialization of the self diagnostic data: RECALL+Channel button onTV (t)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“SCOL” selection : 5 button
“TNTC” selection : 6 button
Convergence adj : 7 button
Test audio signal ON/OFF (1kHz) : 8 button
Self diagnostic display : 9 button

– 10 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
7. 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.
1
2
3
4
5
1Part number of microprocessor (QA01)
2Operation number of protection circuit (current limiter) .. . .“000” is normal.
3BUS line check “OK” ................... Normal
“SCL-GND” or “NG” ........... SCL-GND short circuit
“SDA-GND” or “NG” ........... SDA-GND short circuit
“SCL-SDA” or “NG” ............ SCL-SDA short circuit
4BUS line ACK (acknowledge) check
“OK” ..................... Normal
Display of Location Number ... . NG
(Display example)
“QA02 NG”, “H001 NG”, “Q501 NG” etc.
Note: The indication of failure place is only one place though failure places are plural.When
repair of a failure place finishes, the next failure place is indicated.(The order of priority of
indication is left side.)
5Sync. signal check Green display..... Normal
Red display ........NG
MAIN ........ Main sync
SUB .......... Sub sync (when turn on the PIP)
4. SELECTINGTHE 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 DATA on page 17)
5. ADJUSTINGTHE DATA
1) Pressing of VOLUME sor tbutton will cahnge 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 RECALL button on the Remote, then press the CHANNEL sbutton on theTV.The initialization of QA02
has been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform “Programming Channel Memory” on the owner's manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
SELF CHECK
NO. 23XXXXXX
POWER : 000
BUS LINE : OK
BUS CONT : OK
BLOCK : MAIN SUB

– 11 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
ITEM ADJUSTMENT PROCEDURE
Vertical retrace line
SUB-BRIGHTNESS
(BRTC) 1. Constrict the picture height until the vertical retrace line appears adjusting
the HEIGHT control on the MAIN board.
2. Adjust the CONTRAST to the minimum
and BRIGHTNESS to the center.
3. Enter the service mode, then select
“BRTC” register.
4. Adjust the data value so the belt of
vertical retrace line just disappear.
5. Adjust the HEIGHT control.
* Adjust the SUB-BRIGHTENESS after
adjusting the WHITE BALANCE.
SUB-COLOR
(SCOL)
SUB-TINT
(TNTC)
1. Receive color-bar signal from color-bar generator.
2. Adjust the BRIGHTNESS and CONTRAST to the center (RESET status).
3. Connect oscilloscope to TP501on the MAIN board.
4. Enter the service mode, then select“SCOL”.
5. Temporarily adjust the data value to
achieve about 1V0-p of blue bar.
6. Select “TNTC” register.
7. Adjust the data value to obtain the blue
bar to magenta bar ratio of 3:2 as
shown.
8. Select“SCOL”register.
9. Adjust the data value to achieve 1.8V0-p
of blue bar on scope.
10. Check the picture with off-air signal.
0
Blue
Magenta
23 (1.8V0-P)
SUB-CONTRAST
(SCNT) 1. Tune in a color program and adjust the BRIGHTNESS and CONTRAST to
normal mode(RESET).
2. Enter the service mode, then select "SCNT" register.
3. Change "SCNT" data to13H.
4. Check the picture contrast.
ELECTRICAL ADJUSTMENT
PICTURE POSITION 1. Receive the pattern signal which shows it's center
on the screen.
2. Adjust the picture position alternately by turning
CENTERING MAGNETS for proper picture position.
3. Check the picture with off-air signal.
VERTICAL POSITION (VCEN) 1. Call up the adjustment mode display, then select item VCEN.
2. Press the VOLUME sor tbutton to get the voltage +30 ±10 mV.
3. Measuring method of voltage as follows.
TP-V
TP-G C
(on SIGNAL board)
(on SIGNAL board)
DIGITAL
VOLT METER

– 12 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
ITEM ADJUSTMENT PROCEDURE
VERTICAL LINEARITY
(VLIN) 1. Call up the adjustment mode display, then select the item VLIN. 2. Receive cross-hatch pattern signal.
3. Press the VOLUME sor t
button to obtain the picture of
the best linearity.
4. Then readjust the item HIT.
Center
WHITE BALANCE
(RCUT)
(GCUT)
(BCUT)
(RDRV)
(BDRV)
1. Press RESET button onTV or remote hand set.
2. Call up the adjustment mode display, then adjust the data of items RCUT, GCUT
and BCUT to “40”.
3. Press TV (ANT)/VIDEO button on TV.
4. Gradually rotate R, G and B SCREEN volume of FOCUS PAC (page 7) clock-
wise or counterclockwise until the raster appears slightly on the CRT through
the each lens, and leave them.
(Look into the lens in order to check the raster.)
5. Press TV (ANT)/VIDEO button on TV again.
6. Exit from service mode.
7. Receive white laster pattern signal, and adjust the contrast to the minimum to
make white picture to low light.
8. Adjust the data of items RCUT, GCUT and BCUT for low light area.
9. Adjust the contrast to the maximum to make white picture to high light.
10. Adjust the data of items GDRV and BDRV Controls for proper white-balanced
picture in high light area.
11. Check the white balance in both low and high light areas. If necessary, perform
again steps from 7 to 9.
*The data of item GDRV changes red drive actually.
HEIGHT
(HIT) 1. Call up the adjustment mode display, then select the item HIT. 2. Press the VOLUME sor tbutton to get the picture so the top of raster begins
to lack.
3. Press the VOLUME sbutton to advance the data by 10 steps.
Note : Check the vertical picture position is correct.
WIDTH
(WID) 1. Call up the adjustment mode display, then select the item WID. 2. Press the VOLUME sor tbutton to get the picture so the left and right edges
of raster begins to lack.
3. Press the VOLUME sor tbutton to advance the data by 10 steps.
Note : Check the horizontal picture position is correct.