Sharp 32U-F500 User manual

32U-F500
32U-F810
SHARP CORPORATION This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
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.
COLOR TELEVISION
Chassis No. MS-B
Page
»ELECTRICAL SPECIFICATIONS .........................................................................................................1
»IMPORTANT SERVICE SAFETY PRECAUTION .................................................................................2
»LOCATION OF USER'S CONTROL .....................................................................................................4
»INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................6
»SERVICE ADJUSTMENT ...................................................................................................................10
»CHASSIS LAYOUT .............................................................................................................................13
»BLOCK DIAGRAM ..............................................................................................................................15
»SCHEMATIC DIAGRAMS ...................................................................................................................17
»PRINTED WIRING BOARD ASSEMBLIES ........................................................................................38
»REPLACEMENT PARTS LIST ............................................................................................................45
»PACKING OF THE SET ......................................................................................................................59
CONTENTS
SPEAKER
SIZE ........................................................12 x 6 cm oval (2 pcs.)
VOICE COIL IMPEDANCE............................... 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
(EIA, Channel Plan U.S.A.)
POWER INPUT..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 166W
PICTURE SIZE .......................................... 3,074 cm2 (476sq inch)
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS ...................................................... Ex-D Gun 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 ..............5.0W + 5.0W (at 10% distortion and
Dual CH Operate)
Specifications are subject to change without
prior notice.
ELECTRICAL SPECIFICATIONS
MODELS
SERVICE MANUAL
32U-F500
32U-F810
S32G832U-F500

2
32U-F500
32U-F810
IMPORTANT SERVICE SAFETY PRECAUTION
ËService work should be performed only by qualified service technicians who are
thoroughly familiar with all safety checks and the servicing guidelines which follow:
CAUTION: FOR CONTINUED
PROTECTION AGAINST A
RISK OF FIRE, REPLACE
ONLY WITH SAME TYPE 4A-
125V FUSE.
X-RADIATIONAND HIGH VOLTAGE LIMITS
1. Be sure all service personnel are aware of the
procedures and instructions covering X-radiation. The
only potential source of X-ray in current solid state
TV receivers is the picture 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. High voltage should always be kept at the 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. When the high voltage regulator is operating properly
there is no possibility of an X-radiation problem. Every
time a color chassis is serviced, the brightness should
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. When trouble shooting and taking test measurements
on a receiver with excessive high voltage, 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 heatsinks arepotential shockhazards
when the chassis is operating.
4. The chassis in this receiver has two ground systems
which are separated by insulating material. The non-
isolated (hot) ground system is for the B+ voltage
regulator circuit. The isolated ground system is for
the low B+ 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 tubein thisreceiveremploys integralimplosion
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.
4A 125V

3
32U-F500
32U-F810
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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
necessarily increased by using replacement components
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.
•Plug the AC cord directly into a 120 volt AC outlet,
(Do not use an isolation transformer for this test).
•Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as electrical conduit or electrical ground
connected to earth ground.
•Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity to measure theAC voltage drop
across the resistor.
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 line cord
plug connection reversed. (If necessary, a non-
polarized adapter plug must be used only for the
purpose of completing these check.)
Any current measured must not exceed 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.
For continued protection, replacement parts must be
identical to those used in the original circuit. The use of
substitute replacement parts which do not have the same
safety characteristics as the factory recommended
replacement parts shown in this service manual, may
create shock, fire, X-radiation or other hazards.
1.5k ohm
10W
0.15µF
TEST PROBE
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND

4
32U-F500
32U-F810
LOCATION OF USER'S CONTROL
(32U-F500)
POWER MENU – VOL + CH
PULL-OPEN
POWER MENU – VOL + CH
Front Panel
POWER
Press →On.
Press again →Off.
Basic Remote Control Functions
CHANNEL UP/DOWN
(') Selects next higher
channel.
(") Selects next lower
channel.
• Press both at the same
time to access the MAIN
MENU screen.
IN 2VIDEO/AUDIO
TERMINALS
(INSIDE DOOR)
SENSOR AREA FOR
REMOTE CONTROL
VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
Infrared Transmitter Window
DISPLAY
Press→Displaysreceiving channelfor
four seconds.
Press again →Removes display.
• Temporarily displays receiving
channel when in Closed Caption
mode.
INPUT
Press →Switch to external video
INPUT 1 mode.
Press2times→Switchtoexternalvideo
INPUT 2 mode.
Press3times→Switchtoexternalvideo
INPUT3modeor COMPONENTmode.
Press 4 times →Switch back to the
original TV mode.
ENTER
Usedin some instanceswhere aCable
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.
1 2 3
4 5 6
7 8 9
0 100
POWER
TV
MENU MUTE
PAUSE
FLASHBACK
DISPLAY INPUT
TV • CATV • VCR • DVD
STOP REC
REW PLAY FF
CH/SKIP
VOL
—
CH
CH
VOL
+
ENTER
A B C D
PERSONAL PREFERENCE
DVD
VCR
CATV TV
DVD VCR
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 categories A,
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.
CATV/DVD-TV/VCR MODE
SELECT SWITCH
In TV/VCR position, sends power and
channel select commands (Channel
up/downand RandomAccess buttons)
to the TV and VCR control.
In CATV/DVD position, sends power
and channel select commands to a
cableTV converter and DVD control.
DVD/VCR CONTROL
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.
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5
32U-F500
32U-F810
LOCATION OF USER'S CONTROL
(32U-F810)
POWER MENU –VOL+ CH
PULL-OPEN
AV-2 IN
VIDEO
(MONO) L-AUDIO-R
POWER MENU –VOL + CH
Front Panel
POWER
Press →On.
Press again →Off.
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.
321
654
987
100 0
TV •CATV •VCR •DVD
ABCD
PERSONAL PREFERENCE
" VCR-CH '
FLASHBACK
POWER (DVD/VCR)
PIP SELECT
SWAP
CH SKIP
FREEZE MOVE
REC
PLAY
|
Ë
STOP
FWD
è
REW
È
PAUSE
Ë
ANT–A/B
POWER
DISPLAY
CATV
INPUT
TV
DVD VCR
ENTER
\|
CH
'
VOL
–VOL
+
"
CH
MENU MUTE À SKIP à
POWER
Press → On.
Press again → Off.
POWER
Press → On.
Press again → Off.
ANT–A/B
REMOTE KEYPAD
Accesses any channel from keypad.
FLASHBACK
Returns to previous channel.
PERSONAL PREFERENCE
With the Personal Preference buttons,
youcan program yourfavorite programs
by using the 4 categories A, B, C and D
The channels can be accessed quickly
by using these buttons.
VOLUME UP/DOWN
(+)Increases sound.
(–)Decreases sound.
•Inmenu mode, changes or selectsthe
TVadjustments.
MENU
Press → Accesses MAIN MENU.
Press again → Exits MAIN MENU.
MUTE
Press → Mutes sound.
Press again → Restores sound.
•CLOSED CAPTION appears when
sound is muted.
PIP FUNCTION
You can watch two pictures at the same
time.
DVD/VCR CONTROL
Infrared Transmitter Window
CATV/DVD-TV/VCR MODE buttons
PressTV/VCR, sends powerand channel
select commands (Channel up/down and
Random Access buttons) to the TV and
VCR control.
Press CATV/DVD, sends power and
channel select commands to a cable TV
converter and DVD control.
DISPLAY
Press→Displays receiving channelfor
fourseconds.
Pressagain → Removes display.
•Temporarilydisplaysreceivingchannel
whenin Closed Caption mode.
INPUT
Press→ SwitchtoexternalvideoINPUT
1mode.
Press2times→ Switchtoexternalvideo
INPUT2 mode.
Press3times→ Switchtoexternalvideo
INPUT3 modeor COMPONENTmode.
Press 4 times → Switch back to the
originalTV mode.
ENTER
Used in some instances where a 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 “”marks of the MENU
screen
SKIP/VCR-CH
REC
Basic Remote Control Functions
CHANNEL UP/DOWN
( ) Selects next higher
channel.
( ) Selects next lower
channel.
•Press both at the same
time to access the MAIN
MENU screen.
IN 2VIDEO/AUDIO
TERMINALS
SENSOR AREA FOR
REMOTE CONTROL
VOLUME UP/DOWN
(+) Increases sound.
(–) Decreases sound.
MENU
Press →Accesses MAIN MENU.
Press again →Exits MAIN MENU.
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"
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