Only qualified service technicians who are familiar with safety checks
and guidelines should perform service work. Before replacing parts,
disconnect power source to protect electrostatically sensitive parts. Do
not attempt to modify any circuit unless so recommended by the
manufacturer. When servicing the receiver, use an isolation transformer
between the line cord and power receptacle.
SERSER
SER
SERSER
Use EXTREME CAUTION when servicing the high voltage circuits. To
discharge static high voltage, connect a 10K ohms resistor in series with a
test lead between the receiver ground and CRT anode lead. DO NOT lift
the CRT by the neck. Always wear shatterproof goggles when handling
the CRT to protect eyes in case of implosion.
X-RAX-RA
X-RA
X-RAX-RA
Be aware of the instructions and procedures covering X-ray radiation. In
solid-state receivers and monitors, the CRT is the only potential source of
X-rays. Keep an accurate high voltage meter available at all times. Check
meter calibration periodically. Whenever servicing a receiver, check the
high voltage at various brightness levels to be sure it is regulating
properly. Keep high voltage at rated value, NO HIGHER. Excessive high
voltage may cause X-ray radiation or failure of associated components.
DO NOT depend on protection circuits to keep voltage at rated value.
When troubleshooting a receiver with excessive high voltage, avoid close
contact with the CRT. DO NOT operate the receiver longer than
necessary. To locate the cause of excessive high voltage, use a variable
AC transformer to regulate voltage. In present receivers, many electrical
and mechanical components have safety related characteristics which are
not detectable by visual inspection. Such components are identified by a
# on both the schematic and the parts list. For SAFETY, use only
equivalent replacement parts when replacing these components.
GENERAL GUIDELINESGENERAL GUIDELINES
GENERAL GUIDELINES
GENERAL GUIDELINESGENERAL GUIDELINES
Perform a final SAFETY CHECK before returning receiver to customer.
Check repaired area for poorly soldered connections, and check entire
circuit board for solder splashes. Check board wiring for pinched wires or
wires contacting any high wattage resistors. Check that all control knobs,
shields, covers, grounds, and mounting hardware have been replaced. Be
sure to replace all insulators and restore proper lead dress.
WARNINGWARNING
VICE
WARNING
VICE VICE
WARNINGWARNING
VICING VICING
VICING
VICING VICING
Y RADIAY RADIA
Y RADIA
Y RADIAY RADIA
THE HIGH THE HIGH
THE HIGH
THE HIGH THE HIGH
TION AND HIGH TION AND HIGH
TION AND HIGH
TION AND HIGH TION AND HIGH
VV
OLOL
V
OL
VV
OLOL
TT
AA
GE AND CRGE AND CR
T
A
GE AND CR
TT
AA
GE AND CRGE AND CR
VV
OLOL
TT
V
OL
T
VV
OLOL
TT
TT
T
TT
AA
GE LIMITSGE LIMITS
A
GE LIMITS
AA
GE LIMITSGE LIMITS
UTIONSUTIONS
UTIONS
UTIONSUTIONS
SAFETY CHECKS — FIRE AND SHOCK HAZARDSAFETY CHECKS — FIRE AND SHOCK HAZARD
SAFETY CHECKS — FIRE AND SHOCK HAZARD
SAFETY CHECKS — FIRE AND SHOCK HAZARDSAFETY CHECKS — FIRE AND SHOCK HAZARD
Cold LeakaCold Leaka
Cold Leaka
Cold LeakaCold Leaka
Unplug the AC cord, connect a jumper across the plug prongs, and turn
the power switch on (if applicable). Use an ohmmeter to measure the
resistance between the jumped AC plug and any exposed metal cabinet
parts such as antenna screw heads, control shafts, or handle brackets.
Exposed metal parts with a return path should measure between 1M
ohms and 5.2M ohms. Parts without a return path must measure infinity.
Hot LeakaHot Leaka
Hot Leaka
Hot LeakaHot Leaka
Plug the AC cord directly into an AC outlet. DO NOT use an isolation
transformer. Use a 1500 ohms, 10W resistor in parallel with a .15µF
capacitor to connect between any exposed metal parts on the receiver and
a good earth ground. (See figure below.) Use an AC voltmeter with at
least 5000 ohms per volt sensitivity to measure the voltage across the
resistor. Check all exposed metal parts and measure voltage at each point.
Voltage measurements should not exceed .75VAC, 500µA. Any value
exceeding this limit constitutes a potential shock hazard and must be
corrected. If the AC plug is not polarized, reverse the AC plug and repeat
exposed metal part voltage measurement at each point.
gg
e Chece Chec
e Chec
e Chece Chec
ks fks f
ks f
ks fks f
g
gg
gg
e Current Chece Current Chec
g
e Current Chec
gg
e Current Chece Current Chec
or Receiveror Receiver
or Receiver
or Receiveror Receiver
kk
k
kk
s with Isolated Grs with Isolated Gr
s with Isolated Gr
s with Isolated Grs with Isolated Gr
oundound
ound
oundound
PF GOLD 15PF GOLD 15
PF GOLD 15PF GOLD 15
PF GOLD 15
C0175)C0175)
C0175)C0175)
C0175)
AA
AA
A
TT
TT
T
Important Parts Information ..................... 1
Miscellaneous Adjustments ......................1
Parts List ................................................... 6
The listing of any available replacement part herein in no case constitutes a recommendation, warranty, or guarantee by
SAMS Technical Publishing as to the quality and suitability of such replacement part. The numbers of the listed parts have
been compiled from information furnished to SAMS Technical Publishing by the manufacturers of the specific type of
replacement part listed.
Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent
liability is assumed with respect to the use of the information contained herein.
ν The parts listed here are those not usually available from a well-stocked supply cabinet or bin.
ν Where items may be replaced with equivalent parts, several alternates are shown from participating vendors.
ν On the parts lists, safety items are marked with a
these items.
ν When ordering parts, state the model number, part number, and description.
Many of these parts are available from your local Sams authorized distributor or the manufacturer of the equipment. Call
Sams for the name of your nearest distributor:
# #
# to remind you that only exact replacements are recommended for
# #
Obtaining PObtaining P
Obtaining P
Obtaining PObtaining P
arar
ar
arar
tsts
ts
tsts
800-428-7267
Or consult the Sams
Information on test equipment and replacement parts is listed in these pages for the following participating vendors.
Consult the Sams
ν NTE Electronics, Inc. (NTE)
Annual Index
Annual Index
for the address of the original equipment manufacturer.
Tune in a picture. Set brightness, contrast, and color to MINIMUM. Turn
the set off. Remove one of the high voltage cables. Insert a High Voltage
probe tip into the vacant hole. Turn the set on, high voltage should read
31kV to 32kV. Turn the power off and insert the high voltage cable back
into the vacant hole.
ENTERING ENTERING
ENTERING
ENTERING ENTERING
To enter the service mode, press the mute button on the remote. Press the
mute button again and keep pressing while simultaneously pressing the
menu button on the receiver. The letter S will appear on the screen
indicating that the receiver is in the service mode.
When in the service mode, press the menu button on the receiver to display
the adjustment menu. To select the item to be adjusted, press the channel up
or down button. To adjust the reference value, press the volume up or down
button. To exit from the service mode or the design mode, press the power
button to turn off the receiver.
SELF DIASELF DIA
SELF DIA
SELF DIASELF DIA
Enter the service mode. Press the 9 button on the remote to check for
proper execution of IC interfacing. The following is an explanation of what
is displayed on screen:
yy
DisplaDispla
y
Displa
yy
DisplaDispla
[SELF CHECK]Self diagnostic function.
No. 23000868Part number of QA01.
POWER : 000Operation number of protecting circuit.
BUS LINE : OKBUS line check. OK is normal.
BUS CONT : OKBus line acknowledge check. OK is
BLOCK : MAIN SUBGreen display is normal. Cyan display is
SET ID : 01
EEP VER: 04
OPT1: 80
OPT2: 08
ITEM BITEM B
ITEM B
ITEM BITEM B
The following is a list of the buttons on the remote that will go to an item
or perform a different function of the service mode:
1 RCUT5COLC
2 GCUT6TNTC
3 BCUT8Toggles audio test signal on and off.
4 SCNT9Self diagnostics
THE SERTHE SER
THE SER
THE SERTHE SER
GNOSTIC FUNCTIONGNOSTIC FUNCTION
GNOSTIC FUNCTION
GNOSTIC FUNCTIONGNOSTIC FUNCTION
UTTUTT
ONSONS
UTT
ONS
UTTUTT
ONSONS
VICE AND DESIGN MODESVICE AND DESIGN MODES
VICE AND DESIGN MODES
VICE AND DESIGN MODESVICE AND DESIGN MODES
ExplanationExplanation
Explanation
ExplanationExplanation
000 display is normal.
NG indicates a short to ground of
the SCL or SDA signal or a short
between SCL and SDA.
normal. A location number is NG.
NG QA02 indicates QA02 is bad.
no check. Red display is NG. UV is TV
mode, V1 is Video 1 mode, and
V2 is Video 2 mode.
Enter the service mode. Press and hold the recall button on the remote
while simultaneously pressing the channel up button on the receiver. The
initialization of QA02 is complete. Program channels into memory.
NameName
Name
NameName
TION OF QA02TION OF QA02
TION OF QA02
TION OF QA02TION OF QA02
RefRef
Ref
RefRef
VV
V
VV
erence
erenceerence
aluealue
alue
aluealue
On SetOn Set
On Set
On SetOn Set
aluealue
VV
alue
V
aluealue
VV
Tune in a color bar pattern. Set contrast to maximum and brightness to
midrange. Connect an oscilloscope to the red cathode. Enter the service
mode. Select item COLC and adjust reference value to obtain 150Vp-p.
Tune in an active channel. Select item TNTC and adjust reference value for
proper flesh tones.
SUB BRIGHTNESS (BRSUB BRIGHTNESS (BR
SUB BRIGHTNESS (BR
SUB BRIGHTNESS (BRSUB BRIGHTNESS (BR
Tune in a picture. Set contrast to MINIMUM. Enter the service mode.
Select item BRTC, adjust reference value until vertical retrace line just
disappears. Adjust contrast for normal picture. Perform Height (HIT)
adjustment.
HORIZONTHORIZONT
HORIZONT
HORIZONTHORIZONT
(VPOS)(VPOS)
(VPOS)
(VPOS)(VPOS)
Enter the service mode. Press the TV/video button on remote until a
crossbar pattern is displayed. Select item HPOS or VPOS and adjust
reference value for the horizontal and vertical position alternately until the
pattern is centered on the screen. Check the position of the picture with offair signal.
HEIGHT (HIT)HEIGHT (HIT)
HEIGHT (HIT)
HEIGHT (HIT)HEIGHT (HIT)
Enter the service mode. Press the TV/video button on remote until a
crosshatch pattern is displayed. Select item HIT and adjust reference value
for slight underscan. Advance the data value by 8 steps and check the
vertical position of the picture.
WIDTH (WID)WIDTH (WID)
WIDTH (WID)
WIDTH (WID)WIDTH (WID)
Enter the service mode. Press the TV/video button on remote until a
crosshatch pattern is displayed. Select item WID, adjust reference value for
slight underscan. Advance the reference value by 7 steps. Check for proper
horizontal position of the picture.
E-W PE-W P
E-W P
E-W PE-W P
Enter the service mode. Press the TV/video button on remote until a
crosshatch pattern is displayed. Select item DPC, adjust reference value for
straight vertical lines on both sides of the pattern.
WHITE BWHITE B
WHITE B
WHITE BWHITE B
Turn receiver on. Allow a 10 to 30 minute warm up time. Adjust contrast to
center and brightness to maximum. Enter the service mode. Press the TV/
video button on remote until the white screen pattern is displayed. Select
items RCUT, GCUT, BCUT, GDRV, and BDRV and set the reference value
for each to 40H. Press the video button on the remote to obtain a single
horizontal line. Advance the screen control until a faint line of one
predominant color appears on the screen. Adjust the other two cutoff items
to obtain a dim white line. Press the video button on the remote to get full
deflection. Select items GDRV and BDRV and adjust reference value of
each for the best black and white picture on screen.
AL POSITION (HPOS) & AL POSITION (HPOS) &
AL POSITION (HPOS) &
AL POSITION (HPOS) & AL POSITION (HPOS) &
ARABOLA (DPC)ARABOLA (DPC)
ARABOLA (DPC)
ARABOLA (DPC)ARABOLA (DPC)
ALANCE (RCUTALANCE (RCUT
ALANCE (RCUT
ALANCE (RCUTALANCE (RCUT
TC)TC)
TC)
TC)TC)
,,
GCUT GCUT
,
GCUT
,,
GCUT GCUT
VERVER
VER
VERVER
,,
BCUT BCUT
,
BCUT
,,
BCUT BCUT
TICAL POSITIONTICAL POSITION
TICAL POSITION
TICAL POSITIONTICAL POSITION
,,
GDR GDR
VV
,,
BDR BDR
,
GDR
,,
GDR GDR
V
VV
,
BDR
,,
BDR BDR
V)V)
V)
V)V)
Select the Adjustment mode RCUT, GCUT, or BCUT of the service mode.
Adjust convergence from center to circumference in order. Press “7” button
to display the built-in crosshatch pattern, it includes the three colors (R, G,
B). The cursor should be blinking in Red, this means that the Red convergence around the cursor can be done. Press “3” button to select the Green
color to be adjusted. Press “2” up, “8” down, “4” left, “6” right to move
the cursor to other point to be adjusted. Press “5” button to stop the cursor
from blinking, or to start the cursor blinking again. If necessary a specified
color line can be erased from the screen, press “100” button to erase Red
line. Press “0” button to erase Green line. Press “ENT” or “RTN” button to
erase Blue line. Repeat these steps to adjust the Red and Blue colors.
Converge the selected color into the Green line. Press “7” button to save the
adjustment changes. Press “7” button again to return to normal picture.
SERVICE PRECAUTIONS
Do not use a magnetized screw driver for screws of Deflection Yoke and
Velocity 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 a CRT:
DO NOT LOOSEN OR ADJUST ANY OF THE HEX HEAD SCREWS.
These screws are for sealing of CRT coolant fluid, loosening any of
these screws will cause fluid leakage.
When replacing the anode cap assembly, or the anode lead assembly
remove the anode lead holder from old assembly and attach it to the new
anode lead, and make sure the point of the anode lead would be straight
coming out of the lead holder.
T
TT
TT
OSHIB
OSHIBOSHIB
OSHIBOSHIB
A MODEL 43A61 (CHASSIS
A MODEL 43A61 (CHASSIS A MODEL 43A61 (CHASSIS
A MODEL 43A61 (CHASSIS A MODEL 43A61 (CHASSIS
T
TT
TT
A
AA
AA
C0175)
C0175)C0175)
C0175)C0175)
PF GOLD 15 PPF GOLD 15 P
PF GOLD 15 P
PF GOLD 15 PPF GOLD 15 P
aa
gg
e 1e 1
a
g
e 1
aa
gg
e 1e 1
PP
aa
gg
e 2e 2
P
a
PP
aa
PF GOLD 15 PF GOLD 15
g
e 2
PF GOLD 15
gg
e 2e 2
PF GOLD 15 PF GOLD 15
PF GOLD 15 PPF GOLD 15 P
PF GOLD 15 P
PF GOLD 15 PPF GOLD 15 P
aa
gg
e 2e 2
a
g
e 2
aa
gg
e 2e 2
PP
aa
gg
e 2e 2
P
PP
PF GOLD 15 PF GOLD 15
a
g
e 2
PF GOLD 15
aa
gg
e 2e 2
PF GOLD 15 PF GOLD 15
T
TT
TT
OSHIB
OSHIBOSHIB
OSHIBOSHIB
A MODEL 43A61 (CHASSIS
A MODEL 43A61 (CHASSIS A MODEL 43A61 (CHASSIS
A MODEL 43A61 (CHASSIS A MODEL 43A61 (CHASSIS
T
TT
TT
A
AA
AA
C0175)
C0175)C0175)
C0175)C0175)
PF GOLD 15 PPF GOLD 15 P
PF GOLD 15 P
PF GOLD 15 PPF GOLD 15 P
aa
gg
e 2e 2
a
g
e 2
aa
gg
e 2e 2
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