Design and specifi cations are subject to change without notice.
— 4 —
KP-43T85T / 53SV85T / 61SV85T
WARNINGS AND CAUTIONS
CAUTION
Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT,
after removing the anode.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of
this receiver is directly connected to the ac power line.
!SAFETY-RELATED COMPONENT WARNING!!
Components identifi ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for
safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements
published by Sony. Circuit adjustments that are critical for safe operation are identifi ed in this manual. Follow these procedures
whenever critical components are replaced or improper operation is suspected.
ATTENTION!!
Apres avoir deconnecte le cap de l’anode, court-circuiter l’anode du tube cathodique et celui de l’anode du cap au chassis metallique
de l’appareil, ou la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.
Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout
dépannage. Le chássis de ce récepteur est directement raccordéà l’alimentation du secteur.
! ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de
pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont
le numero de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont
l’importance est critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de
chaque remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.
— 5 —
SAFETY CHECK-OUT
KP-43T85T / 53SV85T / 61SV85T
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specifi ed values. Make sure
your instruments are accurate; be suspicious of your HV meter if
sets always have low HV.
8. Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground and from
all exposed metal parts to any exposed metal part having a return to
chassis, must not exceed 0.5 mA (500 microamperes). Leakage current
can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245 digital
multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication is
0.75 V, so analog meters must have an accurate low voltage
scale. The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground. If the retaining
screw is to be used as your earth ground, verify that it is at ground
by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt troublelight (not a neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot side on the
line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).
To Exposed Metal
Parts on Set
Trouble Light
Ohmmeter
0.15 µF
1.5 k
Earth Ground
AC Outlet Box
AC
Voltmeter
(0.75V)
Figure A. Using an AC voltmeter to check AC leakage.Figure B. Checking for earth ground.
— 6 —
Cold Water Pipe
KP-43T85T / 53SV85T / 61SV85T
SELF-DIAGNOSTIC FUNCTION
Self Diagnosis
Supported model
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.
Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred.
Diagnostic Item STANDBY/ Possible Problem Location Condition Detected Symptoms
TIMER
fl ashes
Power not On 0 [Standby Power Supply System] Cannot turn on the power
F601 open LED doesn’t blink
R607 open
Q601 short circuit
[Main Power Supply System}
IC601 and R612 are broken
VDR601 short-circuit
+B OCP Detection 2 times Short circuit of power supply in each circuit Goes to the standby mode 2: +B OCP 000
Short circuit of the +B line
+B OVP Detection 3 times T603 pin 7 to pin 8 is open Goes to the standby mode 3: +B OVP 000
Vertical Defl ection Stop 4 times IC 1509 (V OUT) is broken Raster goes to one line horizontally 4: V Stop 000Q1505 (V Pulse Buffer) is broken A and then video signal is muted.
Video Out Abnormality 5 times Video Out, Q705, 732, 761, and others in C board STANDBY/TIMER LED blinks approx. 5: AKB 000
Detection 30 secs, then blinks for the diagnosis
Horizontal Defl ection Stop 6 times C515, 516 open. IC206 (YC Jungle) is broken. Raster does not appear. 6: H Stop 000
Audio Abnormality 8 times IC 406 (Audio amp.) is broken. The sound is not out. 8: Audio 000
Detection PS401, 402 open Goes to the standby mode
Note: 000 the range of values for number of operations is 000 - 255. For 256 or higher, the number remains as 255.
Display of Standby/Timer LED Flash Count
FLASH FOCUS
TV/VIDEO
FRONT PANEL
VOLUME
+CHANNEL +
POWER
TIMER/STAND BY
EXAMPLE
Diagnosis Items Number of Blinks
+B overcurrent 2 times
+B overvoltage3 times
TIMER/STANDBY indicator
* One blink is not used for self-diagnosis.
Vertical deflection stop4 times
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Lamp OFF :
3.0 seconds
Release of TIMER/STANDBY indicator blinking.
The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the
power.
— 7 —
KP-43T85T / 53SV85T / 61SV85T
Self-diagnosis screen displays
In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the screen
disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection circuit operated
or not) in order to allow confi rmation.
Screen Display Method
Quickly press the remote command button in the following order from the standby state.
Display
Channel
Sound Volume*
5
_
Power ON
*Note that this differs from entering the service mode (sound volume
SELF DIAGNOSIS
2: +B OCP 000
3: +B OVP 000
4: VSTOP 000
5: AKB 000
101: WDT 000
Self-Diagnosis Screen Display
The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to
return the results display to “ 0 ”.
If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
Method of Clearing Results Display
1. Power off (Set to the stanby mode.)
2.
Display
Channel
5
2: +B OCP 000
Sound Volume
Results
Diagnosis
+
000 the range of values for number of
operations is 000-225.
For 256 or higher, the number remains
at 255.
Power ON (Service Mode)
)
+
3. Channel
Method of Ending Self Diagnosis Screen
When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
8
(Test reset = Factory preset condition)
ENTER
— 8 —
KP-43T85T / 53SV85T / 61SV85T
Self-diagnosis function operation
OCP Low B and +B line detect DET SHORT, and shut-down POWER ON RELAY.
Reset by turning power on/off.
In case of +B is loaded approx. 1.3A or more, microcomputer detects it via IC651.
OVP In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC651.
Reset by turning power on/off just the same as OCP.
V Stop In case of microcomputer detects 2 seconds or more interval of V Pulse, Reference Pulse turns off by turning off the picture
signal in YC Jungle IC (IC206).
After the picture signal turns off, V Pulse is regenerated 2 seconds or more, the picture signal turns on.
AKB IK detection. Makes LED blinking in case of microcomputer doesn’t detect IK returns of IC206 CXA2147Q 30 seconds or more.
H Stop In case of HV becomes 33kV or more, IC502 detects it and shut-down H Drive Pulse.
Microcomputer receives H Stop data from IC206 and makes LED blinking.
Audio In case of DC component overlaps the output of Audio Amp., microcomputer detects it and makes LED blinking.
Microcomputer forces to shut down the power.
Self-diagnosis block diagram
8
55
IC002
mProcessor
202122
IC004
EEPROM
Audio AMP
D1201
TIMER/STANDBY
5. AKB
6. H STOP
49
47
50
48
BUS
3
4
5. AKB
IC406
Q006
IC206
CXA2147
YCJ
27
IC1509
V Drive
43
35
34
6. HV STOP
IC502
HV Detector
Q1505
V Pulse Buffer
C Board
3. OVP
2. OCP
4. V.STOP (V Pulse)
Audio
IC651
OVP Buffer
OCP Buffer
DC Detect
OVP DETECT
OCP DETECT
— 9 —
SECTION 1: DISASSEMBLY
KP-43T85T / 53SV85T / 61SV85T
1-1. REAR BOARD REMOVAL
2
Eight Screws (KP-43T85T)
1
Ten Screws (KP-53SV85T/61SV85T)
Rear board
1-2. CHASSIS ASSEMBLY REMOVAL
1
Three screws
(Screw(4x20),tapping)
2
Chassis assy
1-3. SERVICE POSITION
Disconnect CN203
1
on A board.
From CG board CN1304.
A board
CN203
G board
Chassis assembly
(The extension cable is not
supplied because of the
countermeasure for radiation.)
2
Covers
Remove covers from chassis assembly
with pliers when checking printed circuit boards.
After checking, turn the covers over
and re-secure them with the screws.
Screws
(+BVTP3x12)
— 10 —
KP-43T85T / 53SV85T / 61SV85T
1-4. HA AND HB BOARD REMOVAL
(ALL EXCEPT KP-43T85T)
CAUTION: Removing the arrow-marked screws is strictly prohibited. If removed, it may cause liquid to spill.
Lens
Picture tube
2
Four screws
(Screw(4x20), tapping)
Rubber cap
(2) Installation
Gutter
Hook
Four screws
4
(Screw(4x20), tapping)
Lens
5
Four screws
9
(+BVTP 4x12)
Picture tube
11
1
HV cable
Deflection yoke
8
Neck assy
7
CR board
6
3
1
Four screws
(Screw(4x20), tapping)
— 13 —
SECTION 2: SET-UP ADJUSTMENTS
4
KP-43T85T / 53SV85T / 61SV85T
2-1. SCREEN VOLTAGE ADJUSTMENT
(COARSE ADJUSTMENT)
1. Select a video input with no signal applied (the screen must be
black, and the room must be as dark as possible. You may use a
heavy blanket over the screen to block out ambient light).
2. Select picture mode “Personal 1” or “Personal 2”, and set
BRIGHTNESS to 50% and PICTURE to minimum.
3. Turn the green SCREEN control on the focus block all the way to
the left and then gradually turn it to the right until the retrace line
is barely visible.
4. Gradually turn the control to the left until the retrace line just
disappears.
5. Repeat steps 1 through 4 for the red and blue CRTs.
RGB
SCREEN
RGB
FOCUS
FOCUS block
2-2.SCREEN (G2) ADJUSTMENT
(FINE ADJUSTMENT)
If the jig described below is available, it is recommended that the G2 Fine
Mode Adjustment be performed to set the screen controls to their optimal
condition. If desired, you can build the jig illustrated below, using 3-watt
resistors. Please note that if the proper voltage is not obtained with the
listed resistor’s values, then increase or decrease one of the values in
the resistor network to obtain the correct voltage.
2-3. DEFLECTION YOKE TILT ADJUSTMENT
1. Display a cross-hatch pattern
2. Enter the service mode.
3. Cover the red and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
4. Loosen the green CRT’s defl ection yoke set screw and align the tilt
of the defl ection yoke so that the horizontal bars at the center of
the cross-hatch pattern are parallel to the top and bottom edges of
the screen.
5. After aligning the defl ection yoke fasten it securely, making sure it is
fully forward on the neck of the CRT.
6. The tilt of the defl ection yoke for red and blue are aligned the same
way as the green CRT.
Cover the green and blue CRT lenses with lens caps (or use the
method shown in the note below for turning off the CRTs individually
without using lens caps), then repeat steps 4 and 5 for the red CRT.
Cover the green and red CRT lenses with lens caps (or use the
method shown in the note below for turning off the CRTs individually
without using lens caps), then repeat steps 4 and 5 for the blue
CRT.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
2-pole magnet
-pole magnet
Deflection yoke
1. Select VIDEO-1 mode no signal applied (the screen must be black).
2. Connect the G2 JIG.
3. Switch on the JIG.
4. Connect an oscilloscope to the TP701(KR), TP732(KG) and
TP761(KB) of CR board, CG board and CB board.
5. Adjust red, green, and blue screen voltage to 168-172V with
SCREEN controls on the focus block, as shown below.
K
G2 JIG
3.3k5.6k5.6k5.6k
200VGND
SW
GND
170V +/- 2V
pedestal level
Anode cap
2-4. FOCUS LENS ADJUSTMENT
In this adjustment, use the remote commander while in service mode.
For details on the usage of the service mode and the remote
commander, please refer the item 2-9. ELECTRICAL ADJUSTMENTS
BY REMOTE COMMANDER.
1. Loosen the lens wing nut.
2. Enter the service mode.
3. Display a white raster.
4. Cover the red and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
5. Select adjustment category “PJE”, then press 6 to display the test
signal (crosshatch)*.
— 14 —
KP-43T85T / 53SV85T / 61SV85T
* Every time 6 is pressed, the test signal changes to: “crosshatch+video
signal”→“dots+video signal”→ “crosshatch only”→ “dots only” → black
screen →“crosshatch+video signal”→….etc.
6. Rotate the green lens assembly to adjust to the optimum focus point
with the test signal being displayed
7. Tighten the lens wing nut.
8. Cover the green and blue CRT lenses with the lens caps to allow
only red to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
9. Make sure the cross-hatch is still being displayed; if not, follow step
5 above.
10. Adjust the red CRT lens the same way as the green CRT lens.
11. Cover the green and red CRT lenses with the lens caps to allow only
blue to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps).
Test Signal
7. Make sure the cross-hatch is still being displayed; if not, follow step
4 above.
8. Adjust the red focus control on the focus block to achieve the
optimum focus point with the test signal being displayed.
9. Cover the green and red picture lenses with lens caps to allow only
blue to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps).
10. Make sure the cross-hatch is still being displayed; if not, follow step
# 4 above.
11. Adjust the blue focus control on the focus block to achieve the
optimum focus point with the test signal being displayed.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “`”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
Scanning line visible.
12. Make sure the cross-hatch is still being displayed; if not, follow step
# 5 above.
13. Adjust the blue CRT lens the same way as the green and red CRT
lenses.
14. After adjusting the items 2-5 “Focus VR Adjustment”, 2-6 “2-Pole
Magnet Adjustment” and 2-7 “4-Pole Magnet Adjustment”, reconfi rm
the optimum focus point and adjust again if necessary.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
2-5. FOCUS CONTROL ADJUSTMENT
1. Enter the service mode.
2. Display a white raster.
3. Cover the red and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
4. Select adjustment category “PJE”, then press 6 to display the test
signal (crosshatch)*.
* Every time 6 is pressed, the test signal changes to: “crosshatch+video
signal”→“dots+video signal”→ “crosshatch only”→ “dots only” → black
screen →“crosshatch+video signal”→….etc.
A
Minimize both A and B.
Lens
B
Center of crosshatch
2-6. 2-POLE MAGNET ADJUSTMENT
(GREEN, RED)
1. Display a dot pattern (see the details of using the internal test
patterns at the end of the previous section).
2. Enter the service mode.
3. Cover the red and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
4. Turn the green focus control on the focus block to the right and set
it to overfocus to enlarge the spot (the dot). See fi gure at the end of
Section 2-3 for the location of the 2-pole magnet adjusting tabs.
5. Adjust the green CRT’s 2-pole magnet so that the small bright spot
is in the center of the large defocused spot.
6. Adjust the green focus control on the focus block and set it for the
best focus.
7. Repeat steps 1 through 6 for the red CRT, except now you will
cover the green and blue CRT lenses with lens caps to allow
only red to show (or use the method shown in the note below
for turning off the CRTs individually without using lens caps) and
you will adjust the red focus control on the focus block.
5. Adjust the green focus control on the focus block to achieve the
optimum focus point with the test signal being displayed.
6. Cover the green and blue picture lenses with lens caps to allow only
red to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps).
— 15 —
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
(
)
Use the center dot
Large de-focused spot
KP-43T85T / 53SV85T / 61SV85T
3. Change TV mode to the video-1 input mode.
4. Select adjustment category “PJE”, and press 6 as many times as
necessary to display the dot pattern on the screen.
5. Adjust the blue focus control on the focus block to adjust the
diameter of the dots in the center of the screen as shown in the
fi gure below.
Small focused spot
2-7. 4-POLE MAGNET ADJUSTMENT
(GREEN, RED, BLUE)
1. Display a dot pattern (see the details of using the internal test
patterns at the end of section 2-5, item 4).
2. Enter the service mode.
3. Cover the red and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for
turning off the CRTs individually without using lens caps).
4. Turn the green focus control on the focus block to the left and set it
to under-focus to enlarge the spot.
5. Adjust the 4-pole magnet so that the enlarged spot in the center of
the screen becomes a perfect circle.
6. Adjust the green focus control on the focus block and set it for the
best focus.
7. Repeat steps 1 through 6 for the red CRT, except now you will
cover the green and blue CRT lenses with lens caps to allow
only red to show (or use the method shown in the note below
for turning off the CRTs individually without using lens caps) and
you will adjust the red focus control on the focus block.
8. Repeat steps 1 through 6 for the blue CRT, except now cover the
green and red CRT lenses with lens caps to allow only blue to show.
Adjust the blue focus control on the focus block (or use the method
shown in the note below for turning off the CRTs individually without
using lens caps). However, for the blue CRT do not make the
enlarged spot a perfect circle as indicated in step 5; instead, adjust
the 4-pole magnet so that the height of the enlarged blue spot in the
center of the screen is approx. 1.5 times the width of the spot.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
Use the center dot
x
y
x : y = 1:1.5 (BIue)
x : y = 1:1 (Green, Red)
2-8. DEFOCUS ADJUSTMENT (BLUE)
Note: Adjust the blue dot to be slightly larger than red and green dots.
This adjustment provides a more pleasing picture to the customer.
1. Select the video menu and set the picture mode to “VIVID”.
2. Enter service mode.
FOCUS ADJUSTMENT POINT:
Dmm M
Screen Size
Diameter
43"
6mm
53"
8mm
61"
9mm
2-9. ELECTRICAL ADJUSTMENTS BY
REMOTE COMMANDER
By using Remote Commander (RM-Y906), all circuit adjustments can
be made.
Note : The following test equipment is required:
1. Pattern Generator (with RF, composite, and component outputs)
2. Digital multimeter
2-9-1. METHOD OF ENTERING THE SERVICE
ADJUSTMENT MODE
SERVICE MODE PROCEDURE
1. TV must be in Standby mode. (Power off)
2. Press “DISPLAY”, 5, “Volume +”, then “TV Power” on the Remote
Commander.
(Press each button within 1 second of pressing the previous button.)
SERVICE MODE ADJUSTMENT
3. The screen displays the adjustment category and the item being
adjusted within that category.
4. Press 1 or 4 to select the adjustment item
5. Press 3 or 6 to change the data
6. Press 2 or 5 to select the adjustment category
7. If you want to go back to the most recently saved value, press “0”
then “ENTER” to read the memory.
8. Press “MUTING” then “ENTER” to write the new adjustment data
into memory.
9. Turn power off when you want to exit the service mode.
Category Adjustment item
DATA
SERVICE VPNT VPOS 031
000000 00
SCREEN DISPLAY
— 16 —
Note: Press “8” then “ENTER” to restore the factory settings for user
controls and channel memories (this will also turn set off and then on
to exit the service mode).
2-9-2. MEMORY WRITE CONFIRMATION
METHOD
1. After adjustment, remove the plug from the AC outlet, and then
replace the plug in the AC outlet again.
2. Turn the power switch ON and enter the Service Mode.
3. Cycle through the adjusted items again and confi rm that the
adjustments were saved.
2-9-3. ADJUSTING BUTTONS AND
INDICATOR
Note: When the PJE mode (which displays an internally generated
signal) is activated, several buttons on the remote commander will have
different functions than the ones listed above. Therefore, when in the PJE
mode, refer to section 2-10 for button functions.
0 PSCN 0-15(8) PIP SUB CONTRASTVARIABLE
1 PSC4 0-155 PIP SUB CONTRAST FOR VIDEO 4FIXED
2 PHUE 0-63(32) PIP SUB HUEVARIABLE
3 PCOL0-15(8) PIP SUB COLORVARIABLE
4 PCL4 0-159 PIP SUB COLOR FOR VIDEO 4FIXED
5 PBRT 0-151 PIP BRIGHTNESSFIXED
6 PBT4 0-151 PIP BRIGHTNESS FOR VIDEO 4FIXED
7 PYDR 0-255192 PIP Y DRIVEFIXED
8 PYD4 0-255192 PIP Y DRIVE FOR VIDEO 4FIXED
9 PUDR 0-255180 PIP U DRIVEFIXED
10 PUD4 0-255180 PIP U DRIVE FOR VIDEO 4FIXED
11 PVDR 0-255120 PIP V DRIVEFIXED
12 PVD4 0-255120 PIP V DRIVE FOR VIDEO 4FIXED
13 PYPD 0-151 PIP Y PEDESTALFIXED
14 PUPD 0-31(15) PIP U PEDESTALVARIABLE
15 PVPD 0-31(15) PIP V PEDESTALVARIABLE
16 AGCR 0,10 AUTO GAIN CONTROL RESETFIXED
17 AGCM 0-33 AUTO GAIN CONTROL MODEFIXED
18 AGCV 0-1512 AUTO GAIN CONTROL VALUEFIXED
19 AGC4 0-1512 AUTO GAIN CNTRL FOR VIDEO 4FIXED
20 LMOF 0-33 LUMINANCE OFFSETFIXED
21 PLLI 0-30 INSET PLL TIME CONSTANTFIXED
22 NRPL 0-30 NOISE REDUCTION INSET PLLFIXED
23 PYDL 0-150 PIP Y/C DELAY FIXED
24 CSTD 0-71 COLOR STANDARDFIXED
25 CEXC 0-31 COLOR STANDARD EXCLUSIONFIXED
26 LKSP 0,10 STANDARD ID SPEEDFIXED
27 CKIL 0-30 COLOR KILLER THRESHOLDFIXED
28 BGPS 0,10 BURST GATE PULSE START POS.FIXED
29 CLON 0,10 COLOR ONFIXED
30 ACCF 0,10 DISABLE AUTO CHROMA CONTROL FIXED
31 IFFL 0-30 IF-COMPENSTATION FILTERFIXED
32 STNR 0,10 SATELLITE NOISE REDUCTIONFIXED
33 FMAC 0,10 FRAME MODE ACTIVATION INSETFIXED
34 CPLL 0,10 CHROMA PLL OFFFIXED
35 SCAD 0-317 COLOR SUBCARRIER ADJ.FIXED
36 FRMY 0-155 FRAME Y LEVELFIXED
37 YPEK 0-77 Y PEAKING ADJUSTMENTFIXED
38 YCOR 0,10 Y CORING ENABLEFIXED
39 CHBW 0-31 CHROMA BANDWIDTHFIXED
TNEMTSUJDA
ATAD
METI
DTS
EGNAR
SERVICE DATA NAME
ATAD
( ) = PREWRITE DATA
KP-43T85T / 53SV85T / 61SV85T
SETTING
ADJ.
SETTING
— 21 —
KP-43T85T / 53SV85T / 61SV85T
f
2-10. REGISTRATION ADJUSTMENT (PJE)
FUNCTION OF BUTTONS OF REMOTE
COMMANDER FOR PJE MODE ONLY.
TV Power ON
Color Select
Adjustment
item up
Adjustment
item down
READ*
data up/down
Resetting the set to the factory shipping condition: Press 8.
“RESET” appears in green letters on the screen. Then press ENTER.
This resets all customer adjustments, channel memories, and channel
labels to the factory shipping settings.
GRN to BLU to RED
Test signal select crosshatch +
video signal dots + video signal
crosshatch + black dots and black of
Mode select
(Course adjustment
Fine adjustment)
ENTER
A pattern from an external pattern generator must be used for the main
defl ection adjustments.
1. Enter the service mode by quickly pressing the keys on the remote
commander in the standby mode in the following order:
Press “DISPLAY,” 5, Volume +, and then “TV POWER”
2. Change from TV mode to video input mode.
3. Input a cross-hatch pattern from an external generator that allows
you to properly center and size (over-scan) the pattern.
4. Select adjustment category “VPNT”, adjustment item 0 “VPOS”.
Adjust the data so that the external pattern is centered vertically.
5. Select adjustment category “VPNT”, adjustment item 1 “VSIZ”.
Adjust the data so that the external pattern is correctly sized
vertically. “Correctly sized” means that the picture is overscanned
by 7.5%, i.e. only 92.5% of the picture is on the viewable area of the
screen. Confi rm that the pattern is still correctly centered vertically.
6. Select adjustment category “VPNT”, adjustment item 5 “HPOS”.
Adjust the data so that the external pattern is centered horizontally.
7. Select adjustment category “VPNT”, adjustment item 6 “VSIZ”.
Adjust the data so that the external pattern is correctly sized
horizontally. “Correctly sized” means that the picture is overscanned
by 7.5%, i.e. only 92.5% of the picture is on the viewable area
of the screen. Confi rm that the pattern is still correctly centered
horizontally.
8. Write the new sizing and centering data to memory by pressing
“MUTING” and then “ENTER”.
9. Change the VPNT mode to “PJE 00 FDIS” (press “2” on the remote
until “PJE” appears on the top left corner of the screen). If “FDIS” is
not displayed below “PJE”, press “4” until it does appear.
Note: Internal patterns are used for geometry and convergence
adjustments. However, sizing and centering must be done with the
use of an external generator. The recommended pattern would be a
monoscope, or equivalent pattern, which would provide the means to
adjust both the linearity and the sizing of the picture. A cross-hatch
pattern with sizing markers can be used in place of a monoscope.
SETUP FOR ADJUSTMENT
• Current fl ow in circuit should be stable before attempting adjustment.
Wait 5 minutes after turning on power to the set.
• At the 4 sides of the screen, locate the middle. Use a tape measure
to identify the middle.
: middle
NOTE: The following steps # 1 through 8 are “main” defl ection
adjustments for sizing and centering. “Main” defl ection adjustments
affect all three CRTs at the same time. The “sub”-defl ection adjustments
that follow are made for each CRT individually. If the centering and
sizing is performed correctly in “main” defl ection adjustments, only minor
touchups may required for the green CRT in “sub”-defl ection adjustment
mode.
PJE 00 00
FDIS
10. Press the remote joystick button up arrow to set the FDIS data to
“01” to display the registration data of each area of the screen in the
fi ne adjustment mode.
PJE 00 01
FDIS
11. Press 6 to display the test signal (crosshatch) on the screen.
12. Select GRN CENT(*) with the 1 and 4 keys on the remote
commander.
GRN ### ###
CENT
(H)(V)
— 22 —
KP-43T85T / 53SV85T / 61SV85T
*: In the factory preset, “GRN CENT” appears on the screen fi rst. To
change the color to red or blue, press the 3 key.
13. Cover the red and blue picture lenses with lens caps to allow only
green to show, or use the method shown in the note below to turn
the CRTs off individually.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
2-11. GREEN REGISTRATION ADJUSTMENT
GREEN CENTER, GREEN SIZE
The sizing and centering that was performed in the previous section
(section 2-10) should have correctly sized and centered the green CRT.
The sizing and centering (coarse adjustment mode) of the red and blue
CRTs in following sections are performed so that the red and blue
patterns overlay the green pattern as close as possible prior to the fi ne
mode adjustments. The fi ne-mode adjustments are made for all 3 colors
so that the cross-hatch lines are straight vertically and horizontally, and
the linearity and convergence is correct.
GREEN PINCUSHION
1. Select GRN PIN with the 1 and 4 buttons on the remote commander.
2. Adjust the top and bottom crosshatch lines so that they are straight.
GRN
XXXX000
PIN
Note: These are required when either severe misadjustment or data loss
has occurred.
3. Press “MUTING” then “ENTER” to write the new adjustment data
into memory.
GREEN FINE ADJUSTMENT
Press “MUTING” then “ENTER” often during the fi ne adjustment mode to
save the adjustment data.
1. Press the 6 button until the external pattern disappears and the TV’s
internal cross-hatch pattern appears.
2. Press the 9 button on the remote commander to shift to the fi ne
adjustment mode. The green cursor will appear in the center of the
screen.
3. Use the 1 and 4 buttons on the joystick on the remote commander
to move the cursor (see below) to each area of the screen that
you want to adjust, and adjust with the joystick arrow buttons on
the remote.
GREEN SKEW
1. Display a cross-hatch pattern from an external generator.
2. Confi rm that category “PJE” is selected (refer to step 9 in the
previous section, section 2-10).
3. Make sure that only the external pattern is displayed. If the internal
cross-hatch is displayed, press the 6 button on the remote until only
the external pattern is displayed.
4. Select GRN SKEW with the 1 and 4 buttons on the remote
commander.
5. Using the joystick buttons on the remoter commander, adjust the
crosshatch lines so that they go straight vertically and horizontally,
not slanting.
GRN
SKEW
000000
6. Press “MUTING” then “ENTER” to write the new adjustment data
into memory.
Cursor movement by the 1 and 4 keys:
Alternative method of moving the cursor.
Press the joystick center button once which will cause the cursor to
change from green to white. When the cursor is white you can move it up
or down, left or right, by using the joystick arrow buttons.
4. Press the joystick center button once; the cursor will return to
green (or red or blue, depending on the previously selected color).
When the cursor is green, you can adjust the geometry of the area
surrounding the cursor by using the joystick arrow buttons.
— 23 —
KP-43T85T / 53SV85T / 61SV85T
FINE ADJUSTMENT
1. Press the 9 button on the remote commander to shift to the
fi ne adjustment mode; the red cursor appears at the center of the
screen. If the cursor is not red, press the 3 button until it is red.
2. Use the 1 and 4 buttons on the remote commander to move the
cursor to each area of the screen you want to adjust.
3. Press “MUTING” and then “ENTER” to save the adjustment data.
5. Press the 9 button on the remote commander to return to the coarse
adjustment mode. If you need to return to the fi ne mode, just press
the 9 button again, and the cursor will change from white to green
or blue or red.
6. After the green lines are all straight, press “MUTING” and then
“ENTER” to save the adjustment data.
2-12. RED REGISTRATION ADJUSTMENT
RED CENTER, SKEW
1. Cover the blue picture lens with a lens cap to allow green and red to
show (or use the method shown in the note below).
2. Press the 3 button on the remote commander to change the GRN
mode to the RED mode.
3. Select RED CENT or RED SKEW with the 1 and 4 buttons on the
remote commander and adjust while tracking each one alternately.
4. Adjust the red crosshatch lines using the joystick arrow buttons,
so that they are straight vertically and horizontally, and overlap the
green lines.
5. Press “MUTING” and then “ENTER” to save the adjustment data.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from “1”
to “0” in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
RED SIZE, LINEARITY
1. Alternately select RED SIZE (vertically and horizontally) or RED LIN
(vertically) with the 1 and 4 buttons on the remote commander and
adjust while tracking each one alternately.
2. Adjust the red crosshatch lines with the joystick on the remote
commander until they are straight vertically and horizontally and they
overlap the green lines.
2-13. BLUE REGISTRATION ADJUSTMENT
1. Remove the lens cap from the blue picture lens to show all colors (or
use the method shown in the note above to turn on all 3 CRTs).
2. Press the 3 button on the remote commander to shift the RED
mode to the BLU mode.
3. Adjust BLU CENT, BLU SKEW, BLU SIZE, BLU LIN, BLU KEY and
BLU PIN the same way as the red registration adjustment.
FINAL CHECK- IMPORTANT
This must be performed before leaving the service mode!
1. Store the fi nal adjustment data by pressing MUTING and then
ENTER.
2. Press the FLASH FOCUS button on the front panel.
3. If an error message appears, refer to the following.
If an error code is displayed after the set has been correctly adjusted,
check the following items: position, tilt and sizing. If any of these
adjustments are off, even slightly, the auto-registration pattern will not
hit the four sensors properly. This occurs when the internal generator
patterns are being fl ashed on the screen for the sensors to read.
Therefore, auto registration (called auto-focus) cannot operate properly,
causing an error code to be displayed. In order for this function to operate
properly, position, tilt and size must be adjusted properly.
Note: In case of replacing CRTs, adjust the set-up adjustments (items
2-1 to 2-8) and the registration adjustment (item 2-10). In the case
of replacing multiple CRTs at the same time, replace and adjust them
individually.
RED KEY, PINCUSHION
1. Select RED KEY or PINCUSHION with the 1 and 4 buttons on the
remote commander and adjust each one while tracking each other.
2. Using the joystick arrow buttons, adjust the red crosshatch lines so
that they are straight horizontally and vertically, and they overlap
the green lines.
Note: These are required when either severe mis-adjustment or data
loss occurred.
3. Press “MUTING” and then “ENTER” to save the adjustment data.
— 24 —
KP-43T85T / 53SV85T / 61SV85T
2-14. AUTO REGISTRATION ERROR CODE LIST
If an error code is displayed after the set has been correctly adjusted, check the following items: position, tilt and sizing. If any of these adjustments are
off, even slightly, the auto-registration pattern will not hit the four sensors properly. This occurs when the internal generator patterns are being fl ashed
on the screen for the sensors to read. Therefore, auto registration (called auto-focus) cannot operate properly, causing an error code to be displayed. In
order for this function to operate properly, position, tilt and size must be adjusted properly.
20Sensor Output Level High* Check OP-amp circuit0 : Upper Center
1 : Middle Left
2 : Middle Right
3 : Lower Center
30Adjustment Loop Counter Overflow* Check the registring information on the convergence board
40Regi Data Overflow
50Regi Data Overflow
60Offset Overflow
70Offset Overflow
* Check the convergence yoke driver ICs.
* Convergence patterns displayed are out of normal range.
* In the case of multiple errors, last error is displayed.
• ERROR CODE SCREEN DISPLAY SENSOR POSITION
E 11 B
E 11 B
R. G. B
12
0
SCREEN
SENSOR NUMBER
ERROR CODE 10
ERROR
3
* Error code will be displayed at the center of screen for 3
• ERROR CODE DISPLAY DURING AUTO-REGISTRATION IN SERVICE MODE
PJE 2 9 1 4 0
ERR
ITEM NUMBER-29
SENSOR NUMBER
(ONLY "10"or "20")
ERROR CODE 40
G-0 (Blank)
R.G.B
R-1
B-2
0 : UPPER SENSOR
1 : LEFT SENSOR
2 : RIGHT SENSOR
3 : LOWER SENSOR
— 25 —
SECTION 3: SAFETY-RELATED ADJUSTMENTS
KP-43T85T / 53SV85T / 61SV85T
G BOARD
3-1. HV REGULATION CIRCUIT CHECK AND
ADJUSTMENT
When replacing the following components marked with a Y on the
schematic diagram always check the HV regulation, and if necessary
re-adjust.
1. Connect an HV static voltmeter to the unused socket of the highvoltage block. (Fig. 3-1)
2. Power on the set.
3. Display a dot pattern through the VHF/UHF input (PICTURE and
BRIGHTNESS set to minimum)
4. Check that the HV static voltmeter is reading
31.00 KV +1.0 KV DC / -2.5 KV DC.
HV Regulation adjustment
1. Connect a HV static voltmeter to the unused socket of the highvoltage block.
2. Power on the set.
3. Display a dot pattern through the VHF/UHF input (PICTURE and
BRIGHTNESS to minimum).
4. If anode voltage is 31.95kV or higher, change the value of C517
from 470pF/2kV to 1,000pF/2kV, and confi rm that the high voltage is
within the range specifi ed above.
5. If anode voltage is 29.45kV or lower, change the value of C517 from
470pF/2kV to 100pF/2kV, and confi rm that the high voltage is within
the range specifi ed above.
Remove the cap from
the unused terminal and
connect a static voltmeter
here.
3-2. HV HOLD DOWN CIRCUIT OPERATION
CHECK AND ADJUSTMENT
When replacing the following components marked with a Y on the
schematic diagram always check the hold-down voltage and re-adjust
when necessary.
2. Connect an HV static voltmeter to the unused socket of the highvoltage block.
3. Connect a 220Ω/200W resistor, across pin 2 and pin 1 of CN652,
and connect an external DC power supply (200V, class 2A) to pin
3 of CN652.
4. First, turn on the external power supply (+B=135V), then turn on the
power to the set.
5. Display a dot pattern through the VHF/UHF input (PICTURE and
BRIGHTNESS to minimum).
6. Gradually increase the value of the external DC power supply and
check that the hold-down circuit operates at a static HV voltmeter
reading of 33.5±1.0kVdc when the set shuts down.
7. Remove AC power from the set, then remove the 220Ω/200W
resistor and reconnnect CN652.
HV HOLD-DOWN ADJUSTMENT
1. Repeat steps 1-8 above.
2. If hold-down voltage is 34.5kV or higher, remove R536, mount a
resistor (150kΩ, 1/4W : RN) onto R545 instead, and check again if
the hold-down voltage is within the standard range.
3. If hold-down voltage is 32.5kV or lower, mount a resistor (220kΩ,
1/4W : RN) onto R536 and check again if the hold-down voltage is
within the standard range.
NOTE: Finish the adjustment as soon as possible.
— 26 —
3-3.+B MAX VOLTAGE CONFIRMATION
The following adjustments should always be performed when
replacing IC654.
1. Supply 130V +/- 2V AC to the set.
2. Display a dot pattern through the video-1 input.
3. Set the PICTURE control and the BRIGHTNESS control to
minimum.
4. Confi rm the voltage of G BOARD test point TP135V is less than
137.0Vdc.
5. If step 4 is not satisfi ed, replace IC654 and repeat above steps.
3-4.+B OVP CONFIRMATION
1. Connect the voltmeter between test point TP OVP and ground.
2. Supply 120VAC to the set using an isolation transformer.
3. Set an adjustable external 150-Volt DC power supply to 120 VDc,
and connect it to test point OVP.
4. Power on the set.
5. Set PICTURE and BRIGHTNESS controls to minimum.
6. Gradually adjust the external DC supply towards 150 VDc, and
make sure the set shuts down when the external supply’s voltage is
between 139 VDC and 159 VDC.
KP-43T85T / 53SV85T / 61SV85T
— 27 —
5
SECTION 4: CIRCUIT ADJUSTMENTS
KP-43T85T / 53SV85T / 61SV85T
4-1.TV INPUT SUB CONTRAST ADJUSTMENT
(VPNT-SCON)
1. Display a color bar signal through the TV’s VHF/UHF input.
2. Mode: Personal 1 or 2
PICTURE:............... maximum COLOR:......................minimum
BRIGHTNESS: ............. center COLORTEMP:................neutral
3. Enter the service mode.
4. Turn off the blue and red CRTs by changing the data from “1” to
“0” in category VPNT item 28 RON (red), and item 30 BON (blue).
If this step is not followed, the ABL circuit may prevent you from
adjusting the peak-to-peak amplitude to 1.8 V.
5. Connect an oscilloscope between pin 7 of CN204 (A board) and
ground.
6. Select adjustment category “VPNT” adjustment item 19 “SCON”,
and adjust using the 3 or 6 button on the remote so that the wave
form level is 1.80 ± 0.05Vp-p.
White
1.80 ± 0.05 Vp-p
4-3.COMPONENT INPUT SUB-HUE AND SUBCOLOR ADJUSTMENT (DAC-UVSH, UVSC)
1. Select VIDEO 4 and display a color bar signal.
2. Mode: Personal 1 or 2
PICTURE:............... maximum COLOR:...........................center
BRIGHTNESS: ............. center COLORTEMP:................neutral
3. Enter the service mode.
4. Connect an oscilloscope between pin 5 of CN204 (A board) and
ground.
5. Alternately select adjustment category “DAC”, adjustment item # 0
“UVSH” and item #1 “UVSC” and adjust them so that VB1 = VB4 and
VB2 = VB3 as shown below.
VB1
VB2 VB3
6. Press “MUTING” and then “ENTER” to save the adjustment data.
VB4
Black
7. Press “MUTING” and then “ENTER” to save the adjustment data.
4-2.VIDEO INPUT SUB-HUE AND SUB-COLOR
ADJUSTMENT (VPNT-SHUE, SCOL)
1. Display a color bar signal through a video input.
2. Mode: Personal 1 or 2
PICTURE:............... maximum COLOR:...........................center
BRIGHTNESS: ............. center COLORTEMP:................neutral
3. Enter the service mode.
4. Connect an oscilloscope between pin 5 of CN204 (A board) and
ground.
5. Alternately select adjustment category “VPNT” adjustment item #20
“SHUE” and item #21 “SCOL”, and adjust them so that VB1 = VB4,
and VB2 = VB3 as shown below.
VB1
VB2 VB3
VB4
4-4.PIP SUB CONTRAST ADJUSTMENT
(PYC-PSCN)
1. Display a color bar signal through the TV’s VHF/UHF input.
2. Mode: Personal 1 or 2
PICTURE:............... maximum COLOR:......................minimum
BRIGHTNESS: ............. center COLORTEMP:................neutral
3. Enter the service mode, and then select the PIP (Picture-in-Picture)
mode.
4. Select an unused video input for the main picture (it must be black),
and select the tuner for the small picture (it must be showing
colorbars).
5. Connect an oscilloscope between pin 7 of CN204 (A board) and
ground.
6. Select adjustment category “PYC”, adjustment item # 0 “PSCN” and
adjust so that the peak-to-peak voltage is 1.65 ± 0.05Vp-p as shown
below.
White
1.65 ± 0.0
6. Add 2 to the adjusted value of “SCOL”.
7. Press “MUTING” and then “ENTER” to save the adjustment data.
Black
7. Press “MUTING” and then “ENTER” to save the adjustment data.
1. Display a color bar signal through the TV’s VHF/UHF input.
2. Mode: Personal 1 or 2.
PICTURE:............... maximum COLOR:...........................center
BRIGHTNESS: ............. center COLORTEMP:................neutral
3. Enter the service mode and select the PIP mode.
4. Connect an oscilloscope between pin 5 of CN204 (A board) and
ground.
5. Select an unused video input for the main picture (it must be black),
and select the tuner for the small picture (it must be showing
colorbars).
6. Alternately select adjustment category “PYC”, adjustment item # 2
“PHUE” and item #3 “PCOL” and adjust them so that VB1 = VB4 and
VB2 = VB3 as shown below.
VB1
VB2 VB3
7. Press “MUTING” and then “ENTER” to save the adjustment data.
VB4
4-7.PIP POSITION ADJUSTMENT
(PIP-POFV, POFH)
1. Select the PIP mode.
2. Display any signal in the PIP window.
3. Alternately select adjustment category “PIP”, adjustment item # 18
“POFV” and item #19 “POFH” and adjust so that the PIP window
is equally spaced from the screen edge in each position on the
screen as shown below. Use the POSITION button on the remote to
change the screen position of the PIP window.
X1-X2 < 0.25 sq
Y1-Y2 < 0.25 sq
Y1
Y2
X2X1
4. Write the data into memory, press “MUTING” and then “ENTER”.
4-6.USER-CONTROL BAR GRAPH DISPLAY
POSITION ADJUSTMENT (OP-DISP)
1. Select the video-1 input with no signal applied (the screen should
be black).
2. Enter the service mode.
3. Press the “Volume +” button so that the volume bar graph is
displayed.
4. Check to make sure the bar graph is centered on the screen
horizontally. If necessary, select adjustment category “OP”,
adjustment item # 0 “DISP”, and adjust so that the bar graph is
centered. Adjust the data 1 step at a time, and then display the bar
graph again to check its position.
X1
5. Write the data into memory, press “MUTING” and then “ENTER”.
X2
X1 = X2
— 29 —
5-1. CIRCUIT BOARDS LOCATION
HC
HA
CG
KP-43T85T / 53SV85T / 61SV85T
SECTION 5: DIAGRAMS
S
HB
CR
CB
A
FB
FA
G
5-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less
are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specifi ed.
All resistors are in ohms. K=1000, M=1000k
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm Rating electrical power :
1
/
W in resistance, 1/
4
: nonfl ammable resistor.
: fusible resistor.
: internal component.
: panel designation and adjustment for repair.
All variable and adjustable resistors have characteristic curve B, unless
otherwise noted.
Readings are taken with a NTSC color-bar signal input.
Readings are taken with a 10M digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
All voltages are in V.
S : Measurement impossibillity.
: B+ line
: B-line. (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identifi ed by
been carefully factory-selected for each set in order to satisfy regulations
regarding X-ray radiation. Should replacement be necessary, replace
only with the value originally used.
W and 1/
10
W in chip resistance.
8
X
in this basic schematic diagram have
1
/
W
4
When replacing components identifi ed by
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by
the specifi ed value is achieved.
(Refer to adjustments in Sections 3-1 and 3-2.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
Part Replaced (Y) Adjustment (X)
A BOARD & C517, C521, C522, IC654,
G BOARD: L504, T502, T504, DY
A BOARD & C516, C536, D506, D507, D522,
G BOARD: IC206, IC502, IC654, L504,
R511, R522, R536, R538, R545,
R548, R584, T502, T504, DY
Y
X
and repeat the adjustment until
, make the necessary
HV Regulator:
(C517)
HV HOLD-DOWN:
(R536, R545)
— 30 —
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