Sharp 14SL30 User manual

1
14SL30
21SL40, 21SL70
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.
S89N421SL40//
SERVICE MANUAL
14SL30
21SL40, 21SL70
COLOR TELEVISION
Chassis No. SN-90A(14")
Chassis No. SN-80A(21")
POWER
POWER
– VOL + MENU
CH
VIDEO AUDIO IN
14SL30 21SL40, 21SL70
POWER POWER – VOL + – VOL +
CH
VIDEO L-AUDIO-R IN
MODELS
»ELECTRICAL SPECIFICATIONS......................................................................................................... 1
»IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................2
»LOCATION OF USER'S CONTROL.....................................................................................................4
»INSTALLATIONAND SERVICE INSTRUCTIONS ...............................................................................5
»CHASSIS LAYOUT .............................................................................................................................11
»BLOCK DIAGRAM ............................................................................................................................. 13
»SCHEMATIC DIAGRAMS .................................................................................................................. 16
»PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 28
»REPLACEMENT PARTS LIST ........................................................................................................... 31
»PACKING OF THE SET ..................................................................................................................... 43
Page
CONTENTS
POWER INPUT ..................................... 110 - 220 V AC 50/60 Hz
POWER RATING
14SL30................................................................................65 W
21SL40................................................................................91 W
21SL70................................................................................96 W
PICTURE SIZE
14SL30.......................................................580cm2 (89,9sq inch)
21SL40, 21SL70 ......................................1,240cm2 (192sq 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)
AUDIO POWER OUTPUT RATING
14SL30.....................................1.3W + 1.3W (at 10% distortion)
21SL40.....................................2.0W + 2.0W (at 10% distortion)
21SL70.....................................4.0W + 4.0W (at 10% distortion)
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE
14SL30...................................................................... 9 x 5 cm
21SL40, 21SL70 ......................................................12 x 6 cm
VOICE COIL IMPEDANCE
14SL30..........................................................8 ohm at 400 Hz
21SL40, 21SL70 ...........................................6 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
SHARP CORPORATION
Specifications are subject to change without
prior notice.

2
14SL30
21SL40, 21SL70
IMPORTANT SERVICE SAFETY PRECAUTION
Servicework should beperformed onlyby qualifiedservice technicianswhoarethoroughly
familiar with all safety checks and the servicing guidelines which follow:
X-RADIATIONAND HIGH VOLTAGE LIMITS
1. Be sure all service personnel are aware of the
proceduresandinstructions coveringX-radiation.The
only potential source of X-ray in current solid state
TVreceivers isthe picturetube. However, thepicture
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. Highvoltage shouldalways bekept atthe rated 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. Whenthe highvoltage regulatorisoperating properly
thereisno possibilityofan X-radiationproblem.Every
timeacolor chassisisserviced, 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. Whentrouble shootingandtaking testmeasurements
onareceiver withexcessivehigh voltage,avoidbeing
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
whichare separatedby insulating material.Thenon-
isolated (hot) ground system is for the B+ voltage
regulatorcircuit andthe horizontaloutput circuit.The
isolatedground systemisfor thelowB+ 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
continued safety.
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
14SL30
21SL40, 21SL70
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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
necessarilyincreasedby usingreplacementcomponents
rated for higher voltage, wattage, 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, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
•PlugtheAC corddirectlyintoa110~220voltACoutlet,
(Do not use an isolation transformer for this test).
•Using two clip leads, connect a 1.5k ohm, 10 watt
resistorparalleledby a0.15µFcapacitor inserieswith
all exposed metal cabinet parts and a known earth
ground,such aselectricalconduit orelectricalground
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
substitutereplacementparts whichdonot havethesame
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, 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.)
Anycurrent measuredmust notexceed 0.5 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
14SL30
21SL40, 21SL70
LOCATION OF USER'S CONTROL
TV
POWER POWER – VOL + MENU
CH
VIDEO L-AUDIO-R IN
POWER POWER – VOL + MENU
CH
IN
Infrared Transmitter Window
INPUT
Press →Switch to external video
INPUT 1 mode.
Pressagain →Switchto externalvideo
INPUT 2 mode.
Press 3 times →Switch back to the
original TV mode.
CHANNEL UP/DOWN
( ) Selects next higher channel.
( ) Selects next lower channel.
• Moves the “ ” mark of the MENU
screen.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
DISPLAY
Press→Displaysreceiving channelfor
4 seconds.
Press again →Removes display.
• Temporarily displays receiving
channel when in Closed Caption
mode.
Basic Remote Control Functions
POWER
Press →On.
Press again →Off.
REMOTE KEYPAD
Accesses any channel from keypad.
FLASHBACK
Returns to previous channel.
VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
• In menu mode, changes or selects
the TV adjustments.
MUTE
Press →Mutes sound.
Press again →Restores sound.
• CLOSED CAPTION appears when
sound is muted.
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.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
VIDEO/AUDIO TERMINALS
(VIDEO/AUDIO terminals are also
provided on the rear.)
Front Panel
'
"

5
14SL30
21SL40, 21SL70
CIRCUIT PROTECTION
The receiver is protected by a 3.15A fuse (F701),
mounted on PWB-A, wired into one side of the AC
line input.
X-RADIATION PROTECTOR CIRCUIT TEST
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 110-220V 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 20.6 ±1.5V.
5. Apply external 26.8V 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 circuitbetweenTP651 andTP652. 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. Operatereceiver forat least15 minutesat 110~220V
AC line voltage, with a strong air signal or a properly
tuned 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, 24.0kV
(14SL30) / 27.0kV (21SL40/70) (at zero beam).
Ifacorrect reading cannotbeobtained,check circuitry
formalfunctioningcomponents. After thevoltagetest,
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
14SL30
21SL40, 21SL70
Figure A.
S01 2
CHANNEL
SERVICE ADJUSTMENT NUMBER
DATA NUMBER
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 controller or at the set.
The service adjustment number will vary in
increments of one, from "S01" to "M05". 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.
While pressing the Vol-up and Ch-up buttons at the
sametime, 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
14SL30
21SL40, 21SL70
SERVICE
NUMBER DATA ADJUSTMENT CONTENTS
ADJUSTMENT ITEM RANGE
INITIAL VALUE
NECESSARY UNNECESSARY
ADJUSTMENT NOTES
PART REPLACED
IC2001
IC2101 X
CRT X
IC201 X
Data is stored in IC2101.
Adjust items related to picture tube only.
Table - A
Holdingdown boththe CH-up/downbuttons ontheTV setat servicemode formore than2 secondswill automatically
write the above initial values into IC2101.
Table - B
X
The adjustment is needed to compensate for characteristics
of parts including IC201.
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.
S01 PICTURE 55 00-7F
S02 TINT 46 00-7F
S03 COLOR 32 00-7F
S04 BRIGHTNESS 40 00-7F
S05 SHARPNESS 28 00-3F Must be set to "24"
S06 VERTICAL PHASE 00 00-07 Must be set to "00" ~ "03"
S07 HORIZONTAL PHASE 12 00-1F
S08 RF-AGC 23 00-3F
S09 VERTICAL AMP 20 00-3F
S10 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(3.58MHz) 00 00 or 01 Must be set to "00"
S17 BALANCE 20 00-3F Must be set to "20"
S18 C.C.POSITION 17 00-7F
S19 Y-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 D.D.E.OFFSET 03 00-1F Must be set to "03"
S22 OSD SETUP 00 00-03 Must be set to "02"
S23 TUNER SETUP 00 00-01 Must be set to "00"
OP OPTION 30 00-FF Must be set to "02" (14SL30, 21SL40) / "16" (21SL70)
M01 MTS LEVEL 0A 00-F
M02 STERO-VCO 20 00-3F
M03 FILTER 1C 00-3F
M04 LOWSEPARATION 20 00-3F
M05 HIGHSEPARATION 1B 00-3F 21SL70 only

8
14SL30
21SL40, 21SL70
ËSERVICE ADJUSTMENT
VCO Adjustment
1. Connecta digitalvoltmeter betweenpin(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 thedata to"00" willproduce ablack
raster.
Screen Adjustment
1. Connect a digital voltmeter between TP852 and
TP853 on the CRT Unit.
Note: These test points may not be provided.
Then connect the voltmeter to both ends of
R852 located near Q852 on the foil side.
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 0.17 volts on the digital voltmeter.
6. Adjust the master screen control until the raster
darkens to the point where raster is barely seen.
7. Adjustthe serviceadjustments"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". Select theservice adjustment"S03"and reset
data to obtain normal color level.
9. Removedigital voltmeter,and resetthemasterscreen
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 youselecteda B/Wpicture ormonoscope
pattern.
3. Alternatelyadjust the serviceadjustmentdataof"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. Make sure the customer color control is set to center
position .
3. Enter the service mode and select the service
adjustment "S03".
4. Adjust "S03" data value to obtain normal color level.

9
14SL30
21SL40, 21SL70
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" ~ "03".
Note: This must be set "00" ~ "03" when changed
data 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" for normal viewing.
Sharpness, Audio Balance, Energy Save
Offset, DDE Offset, OSD Setup, Tuner
Setup and Option Adjustments
1. Receive a good local channel.
2. Enter the service mode and select the service
adjustments "S05" for sharpness, "S17" for balance,
"S20" for energy save offset, "S21" for DDE offset,
"S22" for OSD setup, "S23" for tuner and "OP" for
option.
»Sharpness Adjustment
3. Adjust data value to "24" (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
5. Adjust data value to "19".
»DDE Offset Adjustment
6. Adjust data value to "03".
»OSD Setup Adjustment
7. Adjust data value to "02".
»Tuner Setup Adjustment
8. Adjust data value to "00".
»Option Adjustment
9. Adjust data value to "02" (14SL30, 21SL40)/"16"
(21SL70).
Figure B.

10
14SL30
21SL40, 21SL70
Ë
MTS ADJUSTMENT (Only for21SL70)
MTS Level Adjustment
1. Feed the following monaural signal to pin (14) of
IC3001.
Monaural signal : 300Hz, 245mVrms
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 ±10mVrms.
MTS VCO Adjustment
1. Keep the unit in no-signal state.
2. Connectthe frequencycounter topin (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 ±0.75kHz.
Filter Adjustment
1. Feed the following stereo pilot signal to pin (14) of
IC3001 .
Stereo pilot signal: 9.4kHz, 600mVrms.
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, 300Hz
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, 3kHz
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
14SL30
21SL40, 21SL70
654321
A
B
C
D
E
F
G
H
MODEL 14SL30 CHASSIS LAYOUT
PWB-B
PWB-A
PWB-C

12
14SL30
21SL40, 21SL70
654321
A
B
C
D
E
F
G
H
MODELS 21SL40, 21SL70 CHASSIS LAYOUT
PWB-B
PWB-C
PWB-A

13
14SL30
21SL40, 21SL70
654321
A
B
C
D
E
F
G
H
MODEL 14SL30 BLOCK DIAGRAM

14
14SL30
21SL40, 21SL70
654321
A
B
C
D
E
F
G
H
MODEL 21SL40 BLOCK DIAGRAM

15
14SL30
21SL40, 21SL70
654321
A
B
C
D
E
F
G
H
MODEL 21SL70 BLOCK DIAGRAM

16
14SL30
21SL40, 21SL70
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
14SL30
21SL40, 21SL70
SCHEMATIC DIAGRAM: CRT Unit
654321
A
B
C
D
E
F
G
H
Ë 14SL30
Ë21SL40/70

18
14SL30
21SL40, 21SL70
87109654321
A
B
C
D
E
F
G
H
MODEL 14SL30 SCHEMATIC DIAGRAM: MAIN-1 Unit

19
14SL30
21SL40, 21SL70
1716 1918151413121110

20
14SL30
21SL40, 21SL70
87109654321
A
B
C
D
E
F
G
H
MODEL 21SL70 SCHEMATIC DIAGRAM: MAIN-1 Unit