Sharp 26SL41M User manual

1
26SL41M, 26SL71M
29SL81M
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its
original condition and only parts identical to those specified should be used.
S80G526SL41M/
MODELS
»ELECTRICAL SPECIFICATIONS.........................................................................................................1
»IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................2
»LOCATION OF USER'S CONTROL.....................................................................................................4
»INSTALLATION AND SERVICE INSTRUCTIONS ...............................................................................5
»CHASSIS LAYOUT.............................................................................................................................11
»BLOCK DIAGRAM..............................................................................................................................12
»SCHEMATIC DIAGRAMS...................................................................................................................15
»PRINTED WIRING BOARD ASSEMBLIES........................................................................................32
»REPLACEMENT PARTS LIST ...........................................................................................................36
»PACKING OF THE SET......................................................................................................................47
Page
POWER INPUT ...................................... 110-220 V AC 50/60 Hz
POWER RATING
26SL41M.......................................................................... 120 W
26SL71M.......................................................................... 125 W
29SL81M.......................................................................... 130 W
PICTURE SIZE
26SL41M, 26SL71M ............................ 2,032 cm2(315 sq inch)
29SL81M.............................................. 2,193 cm2(340 sq inch)
CONVERGENCE ............................................................ Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS .............................................. Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency .................................... 45.75 MHz
Sound IF Carrier Frequency..................................... 41.25 MHz
Color Sub-Carrier Frequency ................................... 42.17 MHz
(Nominal)
SHARP CORPORATION
CONTENTS
ELECTRICAL SPECIFICATIONS
Specifications are subject to change without
prior notice.
AUDIO POWER
OUTPUT RATING
26SL41M......................................................... 1.5 W + 1.5 W
26SL71M, 29SL81M ..............................................5 W + 5 W
(at 5% distortion and Dual CH Operate)
SPEAKER
SIZE .............................................................. 12 ×6 cm (2 pcs.)
VOICE COIL IMPEDANCE
26SL41M....................................................32 ohm at 400 Hz
26SL71M, 29SL81M ....................................8 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF ................................................... 75 ohm Unbalanced
TUNING RANGES
VHF-Channels ............................................................. 2 thru 13
UHF-Channels ........................................................... 14 thru 69
CATV Channels ......................................................... 1 thru 125
SERVICE MANUAL
26SL41M, 26SL71M
29SL81M
COLOR TELEVISION
Chassis No. SN-91A
POWER POWER PUSH OPEN MTS STEREO

2
26SL41M, 26SL71M
29SL81M
IMPORTANT SERVICE SAFETY PRECAUTION
Service work should be performed only by qualified service technicians who are throughly
familiar with all safety checks and the servicing guidelines which follow:
X-RADIATION AND HIGH VOLTAGE LIMITS
1. Be sure all service personnel are aware of the
proceduresand instructionscoveringX-radiation.The
only potential source of X-ray in current solid state
TVreceiversis thepicture tube.However,the picture
tube does not emit measurable X-Ray radiation, if
the high voltage is as specified in the "High Voltage
Check" instructions.
It is only when high voltage is excessive that X-
radiation is capable of penetrating the shell of the
picture tube including the lead in the glass material.
The important precaution is to keep the high voltage
below the maximum level specified.
2. It is essential that servicemen have available at all
times an accurate high voltage meter.
The calibration of this meter should be checked
periodically.
3. Highvoltageshouldalwaysbekeptattherated value
−no higher. Operation at higher voltages may cause
a failure of the picture tube or high voltage circuitry
and;also, under certain conditions, may produce
radiation in exceeding of desirable levels.
4. Whenthehighvoltageregulator isoperating properly
thereis nopossibilityofanX-radiation problem.Every
timea colorchassis isserviced,thebrightnessshould
be tested while monitoring the high voltage with a
meter to be certain that the high voltage does not
exceed the specified value and that it is regulating
correctly.
5. Do not use a picture tube other than that specified or
make unrecommended circuit modifications to the
high voltage circuitry.
6. Whentroubleshootingand takingtest measurements
ona receiverwith excessivehighvoltage,avoid being
unnecessarily close to the receiver.
Do not operate the receiver longer than is necessary
to locate the cause of excessive voltage.
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
3. Semiconductor heat sinks are potential shock
hazards when the chassis is operating.
4. The chassis in this receiver has two ground systems
whichareseparated byinsulating material.The non-
isolated (hot) ground system is for the B+ voltage
regulatorcircuitand thehorizontal outputcircuit. The
isolatedground systemis forthe lowB+ DC voltages
and the secondary circuit of the high voltage
transformer.
To prevent electrical shock use an isolation
transformer between the line cord and power
receptacle, when servicing this chassis.
SERVICING OF HIGH VOLTAGE SYSTEM
AND PICTURE TUBE
When servicing the high voltage system,
remove the static charge by connecting a
10k ohm resistor in series with an insulated
wire (such as a test probe) between the pic-
ture tube ground and the anode lead. (AC
line cord should be disconnected from AC
outlet.)
1. Picture tube in this receiver employs integral
implosion protection.
2. Replace with tube of the same type number for
continuedsafety.
3. Do not lift picture tube by the neck.
4. Handle the picture tube only when wearing
shatterproof goggles and after discharging the high
voltage anode completely.

3
26SL41M, 26SL71M
29SL81M
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SAFETY NOTICE
Many electrical and mechanical parts in television
receivers have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarilyincreased byusingreplacementcomponents
rated for higher voltage, wattage and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by "å"
and shaded areas in the Replacement Parts Lists and
Schematic Diagrams.
IMPORTANT SERVICE SAFETY PRECAUTION
(Continued)
1. Inspect all lead dress to make certain that leads are
not pinched or that hardware is not lodged between
the chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulating materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical
insulators and etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
•Plug the AC cord directly into a 127 volt AC outlet,
(Do not use an isolation transformer for this test).
•Using two clip leads, connect a 1.5k ohm, 10 watt
resistorparalleled bya0.15µFcapacitorin serieswith
all exposed metal cabinet parts and a known earth
ground,such aselectrical conduitor electricalground
connected to earth ground.
•Use anAC voltmeter having with 5000 ohm per volt,
or higher, sensitivity to measure theAC voltage drop
across the resistor.
For continued protection, replacement parts must be
identical to those used in the original circuit. The use of
substitutereplacement partswhichdonothave thesame
safety characteristics as the factory recommended
replacement parts shown in this service manual, may
create shock, fire, X-radiation or other hazards.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks.
•Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon and etc.) and measure the AC voltage
drop across the resistor.
AII checks must be repeated with the AC ine cord
plug connection reversed. (If necessary, a non-
polarized adapter plug must be used only for the
purpose of completing these check.)
Anycurrentmeasured mustnot exceed0.5 milliamp.
Any measurements not within the limits outlined
above indicate of a potential shock hazard and
corrective action must be taken before returning the
instrument to the customer.
1.5k ohm
10W
0.15µF
TEST PROBE
CONNECT TO
KNOWN EARTH
GROUND
TO EXPOSED
METAL PARTS
AC
VOLTMETER

4
26SL41M, 26SL71M
29SL81M
LOCATION OF USER'S CONTROL
POWER POWER
MTSSTEREO
VIDEO IN 2 L-AUDIO-R– VOL + CH MENU
POWER POWER – VOL + CH MENU
CHANNEL
UP/DOWN
() Selects next higher
channel.
() Selects next lower
channel.
SENSOR AREA FOR
REMOTE CONTROL VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
POWER
Press →On.
Press again →Off.
VIDEO/AUDIO TERMINALS
(VIDEO/AUDIO terminals are also
provided on the rear.)
IN 2
MENU
Press →Accesses MAIN
MENU.
Press again →Exits MAIN
MENU.
Basic Remote Control Functions
Front Panel
1 2 3
4 5 6
7 8 9
0 100
POWER
TV
VCR
MENU MUTE
CATV
PAUSE
TV
FLASHBACK
A
DISPLAY INPUT
B C D
TV • VCR • CATV
STOP REC
REW PLAY FF
VCR CH
ENTER
PERSONAL PREFERENCE
VOL
—
CH
CH
VOL
+
POWER
Press →On.
Press again →Off.
REMOTE KEYPAD
Accesses any channel from keypad.
FLASHBACK
Returns to previous channel.
PERSONAL PREFERENCE
With the Personal Preference buttons,
you can program your favorite
programs by using the 4 categoriesA,
B, C and D. The channels can be
accessed quickly by using these
buttons.
VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
• In menu mode, changes or selects
the TV adjustments.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
TV-CATV MODE SELECT SWITCH
In TV position, sends power and
channel select commands (Channel
up/downand RandomAccess buttons)
to the TV.
In CATV position, sends power and
channel select commands to a cable
TV converter.
VCR CONTROL
Infrared Transmitter Window
DISPLAY
Press→Displays receiving channel for
four seconds.
Press again →Removes display.
• Temporarily displays receiving
channel when in Closed Caption
mode.
INPUT
Press →Switch to external video
INPUT mode.
Press again →Switch to TV mode.
ENTER
Used in some instances where a VCR
or Cable Converter Box requires an
“enter” command after selecting
channels, when using the REMOTE
KEYPAD button.
CHANNEL UP/DOWN
( ) Selects next higher channel.
( ) Selects next lower channel.
• Moves the “ ” mark of the MENU
screens.
MUTE
Press →Mutes sound.
Press again →Restores sound.
• CLOSED CAPTION appears when
sound is muted.
Note:
• The above shaded buttons on the Remote Control glow in the dark. To use the glow-in-the-dark display on the
remote control, place it under a fluorescent light or other lighting.
• The phosphorescent material contains no radioactive or toxic material, so it is safe to use.
• The degree of illumination will vary depending on the strength of lighting used.
• The degree of illumination will decrease with time and depending on the temperature.
• The time needed to charge the phosphorescent display will vary depending on the surrounding lighting.
• Sunlight and fluorescent lighting are the most effective when charging the display.
'
"

5
26SL41M, 26SL71M
29SL81M
CIRCUIT PROTECTION
The receiver is protected by a 5.0A fuse
(F701), mounted on PWB-A, wired into one
side of the AC line input.
X-RADIATIONPROTECTORCIRCUITTEST
After service has been performed on the horizontal
deflection system, high voltage system, B+ system,
test the X-Radiation protection circuit to ascertain
proper operation as follows:
1. Apply 127V AC using a variac transformer for
accurate input voltage.
2. Allow for warm up and adjust all customer controls
for normal picture and sound.
3. Receive a good local channel.
4. Connect a digital voltmeter to TP653 and make sure
that the voltmeter reads 11.2 ± 0.6V.
5. Apply external 13.8V DC at TP653 by using an
external DC supply, TV must be shut off.
6. To reset the protector, unplug theAC cord and make
ashort circuitbetween TP651andTP652. Nowmake
sure that normal picture appears on the screen.
7. If the operation of the horizontal oscillator does not
stop in step 5, the circuit must be repaired before the
set is returned to the customer.
HIGH VOLTAGE CHECK
High voltage is not adjustable but must be checked
to verify that the receiver is operating within safe
and efficient design limitations as specified checks
should be as follows:
1. Connect an accurate high voltage meter between
ground and anode of picture tube.
2. Operate receiver for at least 15 minutes at 127V AC
linevoltage, withastrong airsignalor aproperlytuned
in test signal.
3. Enter the service mode and select the service
adjustment "S19" and Bus data "01" (Y-mute on).
4. The voltage should be approximately, 28.7kV
(26SL41M/71M)/29.7kV(29SL81M)(at zero beam).
Ifa correctreadingcannot beobtained,checkcircuitry
formalfunctioning components. Afterthevoltagetest,
make Y-mute off to the normal mode.
INSTALLATION AND SERVICE INSTRUCTIONS
Note: (1)When performing any adjustments to resistor controls and transformers use non-metallic
screwdrivers or TV alignment tools.
(2)Before performing adjustments, the TV set must be on at least 15 minutes.

6
26SL41M, 26SL71M
29SL81M
Figure A.
S01 02
CHANNEL
SERVICE ADJUSTMENT NUMBER
DATA NUMBER
S01 D:00
For adjustments of this model, the bus data is converted to various analog signals by the D/A converter
circuit.
Note: There are still a few analog adjustments in this series such as focus and master screen voltage.
Follow the steps below whenever the service adjustment is required. See "Table-B" to determine, if serv-
ice adjustments are required.
1. Service mode
Before putting unit into the service mode, check that
customer adjustments are in the normal mode. Use
the reset function in the video adjustment menu to
ensure customer controls are in their proper (reset)
position.
2. Service number selection
Once in the service mode, press the Ch-up or Ch-
down button on the remote control unit or at the set.
The service adjustment number will vary in
increments of one, from "S01" to "OP2" (26SL41M)/
"M05" (26SL71M, 29SL81M). Select the item you
wish to adjust.
3. Data number selection
Press the Vol-up or down button to adjust the data
number.
To enter the service mode and exit serv-
ice mode.
Whilepressing theVol-upandCh-upbuttonsat thesame
time, plug the AC cord into a wall socket.
Now the TV set is switched on and enters the service
mode.
To exit the service mode, turn the television off by
pressing the power button.
55(085)

7
26SL41M, 26SL71M
29SL81M
SERVICE
NUMBER DATA ADJUSTMENT CONTENTS
ADJUSTMENT ITEM RANGE
INITIAL VALUE
S01 PICTURE 55 00-7F
S02 TINT 46 00-7F
S03 COLOR 32 00-7F
S04 BRIGHTNESS 40 00-7F
S05 SHARPNESS 28/24 00-3F Must be set to "28"(26SL41M/71M)/"24"(29SL81M)
S06 VERTICAL PHASE 00 00-07 Must be set to "00"
S07 HORIZONTAL PHASE 12 00-1F
S08 RF-AGC 23 00-3F
S09 VERTICALAMP 20 00-3F
S10 PIF VCO 2C 00-7F
S11 R CUT-OFF 00 00-FF
S12 G CUT -OFF 00 00-FF
S13 B CUT-OFF 00 00-FF
S14 G GAIN 7F 00-FF
S15 B GAIN 7F 00-FF
S16 TRAP 00/01 00 or 01 Must be set to "00"(26SL41M/71M)/"01"(29SL81M)
S17 BALANCE 20 00-3F Must be set to "20"
S18 C.C. POSITION 17 00-7F
S19 MUTE 00 00,01,03 "00"=Normal, "01"=No Y, "03"=No Vertical
S20 ENERGY SAVE OFFSET 20 00-3F Must be set to "19"
S21 INT. CYCLE TIMING 7A 00-1F Must be set to "7A"
S22 00 00 No Setting
S23 TUNER SETUP 00 00, 01 Must be set to "00"
OP1 OPTION (Set to each model) 00 00-FF
Must be set to "E1"=26SL41, "E7"=26S71M, 29SL81M
OP2 OPTION (Set to each model) 00 00-FF Must be set to "0C"=26SL41M, "0F"=26SL71M,
"8F"=29SL81M
M01 INPUT LEVEL 0A 00-0F
M02 ST VCO 20 00-3F
M03 FILTER 1C 00-3F
M04 WIDE BAND 20 00-3F
M05 SPECTRAL 1B 00-3F
NECESSARY UNNECESSARY
ADJUSTMENT NOTES
PART REPLACED
IC2001
IC2101 X
IC3001 X
CRT X
IC201 X
XData is stored in IC2101.
The adjustment is needed to compensate for characteristics
of parts including IC201 and MTS level (M01).
Holding down both the CH-up/down buttons on the TV set in
the service mode for more than 2 seconds will automatically
write the above initial values into IC2101. Then perform a
complete adjustment.
Adjust items related to picture tube only.
Adjust items related to MTS only (M01~M05).
Holdingdownboth theCH-up/down buttonson theTV setat servicemode formorethan 2seconds willautomatically
write the above initial values into IC2101.
Table - A
Table - B
Only for Models
26SL71M, 29SL81M

8
26SL41M, 26SL71M
29SL81M
SERVICE ADJUSTMENT
VCO Adjustment
1. Connectadigitalvoltmeterbetweenpin(44)ofIC201
and ground.
2. Receive a good local channel.
3. Enter the service mode and select the service
adjustment "S10".
4. Adjust the data so that digital voltmeter reads 2.2V.
5. Adjustment is completed, remove the voltmeter,
return to "normal" mode.
RF AGC Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S08".
3. Set the data value to point where no noise or beat
appears.
4. Select another channel to confirm that no noise or
beat appears.
Note 1: You will have to come out of the service
mode to select another channel.
Note 2: Setting the data to "00" will produce a black
raster.
Screen Adjustment
1. Connect a oscilloscope between TP854 and GND
on the CRT Unit.
2. Receive a good local channel.
3. Enter the service mode and select the service
adjustment "S03" and set the data value to "00" to
set the color level to minimum. (Record original data
code under adjustment "S03" before changing) You
may skip this step, if you selected a B/W picture or
monoscope pattern.
4. Select the service adjustment "S19" and adjust the
data value to "01", this turn off the luminance signal
(Y-mute).
5. Select the service adjustment "S04" and adjust data
value to obtain 2.35 V on the oscilloscope screen.
6. Adjust the master screen control until the raster
darkens to the point where raster is barely seen.
7. Adjusttheserviceadjustments "S11" red,"S12"green
and "S13" blue to obtain a good grey scale with
normal whites at low brightness level.
8. Select the service adjustment "S19" and reset data
to"00". Selectthe serviceadjustment "S03"andreset
data to obtain normal color level.
9. Remove oscilloscope and reset the master screen
control to obtain normal brightness range.
White Balance Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S03" and set to "00" (minimum
color)(Record original data code under adjustment
"S03" before changing). "S03" does not have to be
adjusted,if youselected aB/W pictureor monoscope
pattern.
3. Alternatelyadjustthe serviceadjustmentdata of"S14"
and "S15" until a good grey scale with normal whites
is obtained.
4. Select the service adjustment "S03" and adjust data
to obtain normal color level.
Sub-Picture Adjustment
1. Receive a good local channel.
2. Make sure the customer picture control is set to
maximum.
3. Enter the service mode and select the service
adjustment "S01".
4. Adjust the data value to achieve normal contrast
range.
Sub-Tint Adjustment
1. Receive a good local channel.
2. Set customer tint control to center of it's range.
3. Enter the service mode and select the service
adjustment "S02".
4. Adjust "S02" data value to obtain normal flesh tones.
Sub-Color Adjustment
1. Receive a good local channel.
2. Makesurethe customer colorcontrol issetto center
position.
3. Entertheservicemode andselect serviceadjustment
"S03".
4. Adjust "S03" data value to obtain normal color level.
2.35V GND

9
26SL41M, 26SL71M
29SL81M
Sub-Brightness Adjustment
1. Receive a good local channel.
2. Make sure the customer brightness control is set to
center position.
3. Enter the service mode and select the service
adjustment "S04".
4. Adjust "S04" data value to obtain normal brightness
level.
Vertical-Size Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S09".
3. While observing the top and bottom of the screen,
adjust "S09" data value to proper vertical size.
Vertical Phase Adjustment
1. Enter the service mode and select the service
adjustment "S06".
2. Adjust data value to "00".
Note: Thismustbe set "00"when changeddata retrace
line will appear.
Horizontal Position Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S07".
3. Adjust "S07" data value so that picture is centered.
Caption Position Adjustment (Horizontal)
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S18".
3. A black text box appears on the screen. (see Figure
B. below)
4. Adjust "S18" data value so that text box is positioned
in the center of the screen.
3.58MHz Trap Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustment "S16".
3. This is a two position adjustment, "00" is ON, "01" is
OFF.
4. Adjust data value to "00"(26SL41M/71M)/"01"
(29SL81M) for normal viewing.
Sharpness and Audio Balance Adjust-
ments
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustments"S05"for sharpnessand "S17"for audio
balance.
»Sharpness Adjustment
3. Adjust data value to "28"(26SL41M/71M)/"24"
(29SL81M)(center of data range) for sharpness
adjustment.
»Audio Balance Adjustment
4. Adjust data value to "20"(center of data range) for
audio balance adjustment.
Energy save offset Adjustment
1. Enter the service mode and select the service
adjustment "S20".
2. Adjust data value to "19".
Note: This position is used to preset the level for the
energy save function.
Other Adjustments
1. Enter the service mode.
2. Adjust the following data values as listed below.
Figure B.
S21 "7A" INT. CYCLE TIMING
S22 "00" No Setting
S23 "00" TUNER SETUP

10
26SL41M, 26SL71M
29SL81M
MTS ADJUSTMENT
(Only for Models 26SL71M, 29SL81M)
MTS Level Adjustment
1. Feed the following monaural signal to pin (14) of
IC3001.
Monaural signal : 300 Hz, 245 mVrms
2. Connect the rms voltmeter to pin (39) of IC3001.
3. Enter the service mode and select the service
adjustment "M01".
4. Adjust the data so that the rms voltmeter reads
490 ± 10 mVrms.
MTS VCO Adjustment
1. Keep the unit in no-signal state.
2. Connectthefrequency countertopin (39)of IC3001.
3. Connect a capacitor (100µF, 50V) in between
positive(+) side of C3005 and ground.
4. Enter the service mode and select the service
adjustment "M02"
5. Adjust the data so that the frequency counter reads
62.94 ± 0.75 kHz.
Filter Adjustment
1. Feed the following stereo pilot signal to pin (14) of
IC3001 .
Stereo pilot signal: 9.4 kHz, 600 mVrms.
2. Enter the service mode and select the service
adjustment "M03".
3. Adjust the data at the point where "OK" appears on
the screen. The "OK" represents the approximate
center of the adjustable range of the data.
Separation Adjustment
1. Connect the rms voltmeter to pin (39) of IC3001.
2. Receive the following composite stereo signal 1.
Composite stereo signal: 30% modulation, left
channel only, noise reduction on, 300 Hz
3. Enter the service mode and select the service
adjustment "M04".
4. Adjust the data until the AC voltage reading of the
rms voltmeter is minimum.
5. Receive the following composite stereo signal 2.
Stereo signal: 30% modulation, left channel only,
noise reduction on, 3 kHz
6. Enter the service mode and select the service
adjustment "M05".
7. Adjust the data until the AC voltage reading of the
rms voltmeter is minimum.
8. Take the above steps 1 thru 7 again for fine
adjustment.

11
26SL41M, 26SL71M
29SL81M
654321
A
B
C
D
E
F
G
H
CHASSIS LAYOUT

12
26SL41M, 26SL71M
29SL81M
654321
A
B
C
D
E
F
G
H
MODEL 26SL41M BLOCK DIAGRAM

13
26SL41M, 26SL71M
29SL81M
654321
A
B
C
D
E
F
G
H
MODEL 26SL71M BLOCK DIAGRAM

14
26SL41M, 26SL71M
29SL81M
654321
A
B
C
D
E
F
G
H
MODEL 29SL81M BLOCK DIAGRAM

15
26SL41M, 26SL71M
29SL81M
DESCRIPTION OF SCHEMATIC DIAGRAM
NOTES:
1. The unit of resistance "ohm" is omitted.
(K=k Ω =1000 Ω , M=M Ω )
2. All resistors are 1/16 watt, unless otherwise noted.
3. All capacitors are µ F, unless otherwise noted.
(P=pF=µµF)
4. (G) indicates ±2% tolerance may be used.
5. indicates line isolated ground.
6. indicates hot ground.
VOLTAGE MEASUREMENT CONDITIONS:
1. All DC voltages are measured with DVM connected
between points indicated and chassis ground, line
voltage set at 110-220V AC and all controls set for
normal picture unless otherwise indicated.
2. All voltages measured with 1000µ V B & W or Color
signal.
WAVEFORM MEASUREMENT CONDITIONS:
1. Photographs taken on a standard gated color bar
signal, the tint setting adjusted for proper color. The
wave shapes at the red, green and blue cathodes of
the picture tube depend on the tint, color level and
picture control.
2. indicates waveform check points (See chart,
waveforms are measured from point indicated to
chassis ground.)
å AND SHADED ( ) COMPONENTS
= SAFETY RELATED PARTS.
' MARK= X-RAY RELATED PARTS.
This circuit diagram is a standard one, printed circuits
may be subject to change for product improvement
without prior notice.
WAVEFORMS

17
26SL41M, 26SL71M
29SL81M
16
121110987654321
A
B
C
D
E
F
G
H
MODEL 26SL41M SCHEMATIC DIAGRAM: MAIN-1 Unit

19
26SL41M, 26SL71M
29SL81M
18
121110987654321
A
B
C
D
E
F
G
H
MODEL 26SL41M SCHEMATIC DIAGRAM: MAIN-2 Unit

21
26SL41M, 26SL71M
29SL81M
20
121110987654321
A
B
C
D
E
F
G
H
MODEL 26SL71M SCHEMATIC DIAGRAM: MAIN-1 Unit

23
26SL41M, 26SL71M
29SL81M
22
121110987654321
A
B
C
D
E
F
G
H
MODEL 26SL71M SCHEMATIC DIAGRAM: MAIN-2 Unit

25
26SL41M, 26SL71M
29SL81M
24
121110987654321
A
B
C
D
E
F
G
H
MODEL 29SL81M SCHEMATIC DIAGRAM: MAIN-1 Unit