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.
21J-FG1RU
FEATURES
ع
Multi 18 Systems
ع
Full Auto Channel Preset and Auto
Channel Skip
ع
100-CH Program Memory
ع
CATV (Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
UNIT ............................................................ 11-3
CHAPTER 12. PRINTED WIRING BOARD ASSEMBLIES
[1] PWB-B: CRT UNIT ......................................12-1
[2] PWB-C: HEADPHONE UNIT ......................12-1
[3] PWB-A: MAIN UNIT ....................................12-2
CHAPTER 8. BLOCK DIAGRAM
[1] BLOCK DIAGRAM: CRT UNIT ...................... 8-1
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing
this chassis. To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified service personnel.
SHARP CORPORATION
Parts Guide
Page 2
21J-FG1RU
21J-FG1RU
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS
Convergence ................................................................................................................ Self Convergence System
Sweep Deflection ..................................................................................................................................... Magnetic
Intermediate Frequencies
Picture IF Carrier ................................................................................................................................. 38.9MHz
Power Input ..................................................................................................................... 220 ~ 240V AC 50/60 Hz
Cabinet material ..................................................................................................................................... All Plastics
Specifications are subject to change without prior notice
1 – 1
Page 3
21J-FG1RU
21J-FG1RU
CHAPTER 2. IMPORTANT SERVICE NOTES
Service Manual
[1] IMPORTANT SERVICE NOTES
Maintenance and repair of this receiver should be done by qualified service personnel only.
1. SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE
When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test
probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.)
1) Picture tube in this receiver employs integral implosion protection.
2) Replace with the same type number of picture tube 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 completely.
2. X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute minimum. Since certain malfunctions or servicing may produce potentially
hazardous radiation with prolonged exposure at close range, the following precautions should be observed:
1) When repairing the circuit, please make sure do not increase the high voltage of the set to more than 30.0kV (at beam 0µA).
2) To keep the set in a normal operation, please make sure it’s function at 26.5kV ± 0.5kV (at beam 1,000µA). The set has been factory - adjusted to
the above-mentioned high voltage.
*If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work.
3) Do not substitute a picture tube with unauthorizerd types and/or brands which may cause excessive X-ray radiation.
3. BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety checks.
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-metal control knobs, insulating materials, cabinet backs, adjustment and compartment covers or
shields, isolation resistor-capacity networks, mechanical insulators etc.
2 – 1
Page 4
21J-FG1RU
21J-FG1RU
CHAPTER 3. ADJUSTMENT PRECAUTIONS
Service Manual
[1] ADJUSTMENT PRECAUTIONS
This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The
adjustments via the I2C bus control include preset-only items and variable data.
CAUTION: Make sure TV set in "Normal condition" before switch to Service Mode for adjustment.
Setting the service mode by the microprocessor.
1.
i) Press SERVICE key on the remote controller to set the TV set to SERVICE mode position, and the microprocessor is in input
mode. (Adjustment through the I2C bus control).
ii) Press the MENU key on the remote controller to get ready to select the mode (Adjustment mode, Setting mode, Check mode and Option
mode) one by one.
iii)
Press the CH DOWN / UP key on the remote controller to select the item in Adjustment mode, Setting mode or Option mode.
iv) Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified. Please wait approximately 200 msec for data storage
in EEPROM before select to another mode.
v) In Check mode the data cannot be changed.
vi) Press the SERVICE key again, it will switch to the NORMAL mode position, and the microprocessor is out of the SERVICE mode.
Factory Presetting.
2.
i) Power ON the TV set, press the SERVICE key on the remote controller, then press both the CH UP and VOL UP button on the set
simultaniously for 5secs. Initial values are automatically preset, only when a new EEPROM is used.
ii) The initial data are preset as listed in page 3-7 to 3-12.
iii) Make sure the data need modification or not (Initial data).
Precaution: If haven't done this initialization, it may possibly generate excessive Beam current.
For reference please check with memory map RH-IXB226WJZZ (See Page 4-1 ~ 4-16)
3.
3 – 1
Page 5
21J-FG1RU
1. ADJUSTMENT ITEM
***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will
not be accurate.
NO ***ADJUSTMENT ITEMEFFECTIVE MODELREVISION
1BUS SET UP
2OPTION SET UP
3H-VCO
4VIF-VCO
5S-TRAP fo
6RF-AGC
7PURITY ADJ
8CONVERGENCE ADJ
9FOCUS ADJ
10V-SHIFT (50 Hz)
11H-SHIFT (50 Hz)
12V-SIZE (50 Hz)
13SCREEN
14WHITE BALANCE
15SUB-BRIGHTNESS
16SUB-CONTRAST
17SUB-TINT
18SUB-COLOR
19SECAM-OFFSET
20SIF VCO ADJ
21BEAM CURRENT CHECK
22BEAM PROTECTOR CHECK
23HV PROTECTOR CHECK
24OTHER PROTECTOR CHECK
25AV OUT CHECK
26AV IN CHECK
27COMPONENT IN CHECK
28CONTRAST CONTROL CHECK
29COLOR CONTROL CHECK
30BRIGHTNESS CONTROL CHECK
31TINT CONTROL CHECK
32SHARPNESS CONTROL CHECK
33CH DISPLAY COLOR CHECK
34NORMAL DISPLAY CHECK
35WHITE TEMP CONTROL CHECK
36COLOR SYSTEM CHECK
37SURROUND CHECK
38TREBLE CHECK
39BASS CHECK
40BALANCE CHECK
41SOUND SYSTEM CHECK
42NOISE MUTE CHECK
43OSD LANGUAGE QUANTITY CHECK
44HEAD PHONE CHECK
45SHOCK TEST CHECK
21J-FG1RU
3 – 2
Page 6
21J-FG1RU
2. USER DATA IN SERVICE MODE
1) While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous
USER DATA.
2) In the service mode, the user data establish as below,
USER DATA
CONTRASTMAX (60)
COLOUR CENT (0)
BRIGHTNESSCENT (0)
TINTCENT (0)
SHARPNESS CENT (0)
WHITE TEMPSTANDARD
S-VOLUMEMIN
SURROUNDOFF
TREBLECENT (0)
BASSCENT (0)
BALANCECENT (0)
BLUE BACK OFF
C SYSTEMAUTO
S SYSTEM *1
*1: For each CH, data is same as before switch to Service mode.
The flow of Mode list as following,
* Direct Key-in Mode for Service Items in Service Mode
RC CODE (HEX)R/C KEY NAMESERVICE-ITEM
80POS 1R-C UP (IN SERVICE MODE V00)
40POS 2G-C UP (IN SERVICE MODE V00)
C0POS 3B-C UP (IN SERVICE MODE V00)
20POS 4R-C DOWN (IN SERVICE MODE V00)
A0POS 5G-C DOWN (IN SERVICE MODE V00)
60POS 6B-C DOWN (IN SERVICE MODE V00)
E0POS 7R-D UP (IN SERVICE MODE V00)
10POS 8B-D UP (IN SERVICE MODE V00)
50POS 0B-D DOWN (IN SERVICE MODE V00)
E4FLASHBACKR-D DOWN (IN SERVICE MODE V00)
E4FLASHBACKY-MUTE (BESIDES OF SERVICE MODE V00)
75WHITE TEMP UPRF-AGC (V01)
F5WHITE TEMP DOWNVIF-VC0 (V02)
C2TUNE DOWNH-VCO (V03)
8DSHARPNESS DOWNSUB-CON (V04)
D6BALANCE LEFTSUB-COL (V05)
0DSHARPNESS UPSUB-BRIGHT (V06)
36BALANCE RIGHTSUB-TINT (V07)
46TREBLE UPSUB-SHP (V08)
C6TREBLE DOWNSUB-COL-YUV (V09)
26BASS UPSUB-TINT-YUV (V10)
24COLOUR UPV-SIZE (V11), V-SIZE60 (V17)
54BRIGHTNESS DOWNV-SHIFT (V12), V-SHIFT60 (V18)
74TINT DOWNH-SHIFT (V13), H-SHIFT60 (V19)
66SURROUND UPSCM-BR (V14)
E6SURROUND DOWNSCM-BB (V15)
C4CONTRAST DOWNSUB-VOL (V16)
40POS 2G-C UP YUV (IN SERVICE MODE V25)
C0POS 3B-C UP YUV (IN SERVICE MODE V25)
20POS 4R-C DOWN YUV (IN SERVICE MODE V25)
3 – 3
Page 7
RC CODE (HEX)R/C KEY NAMESERVICE-ITEM
A0POS 5G-C DOWN YUV (IN SERVICE MODE V25)
60POS 6B-C DOWN YUV (IN SERVICE MODE V25)
E0POS 7R-D UP YUV (IN SERVICE MODE V25)
10POS 8B-D UP YUV (IN SERVICE MODE V25)
50POS 0B-D DOWN YUV (IN SERVICE MODE V25)
E4FLASHBACKR-D DOWN YUV (IN SERVICE MODE V25)
C1AUTO ADJ FOR V01, V02, V03, V20, V21, V22, V23, V24
CAT-SET
81SERVICE MODE
1) Please set the MCL to MCL1 as below.
2) After set the MCL , please set the INITIAL SETTING.
INTIAL 5: For Russia ( All Channel Sound System are set to D/K )
NOTE: PLL DATA OF ABOVE FREQ SHOULD TAKE THE ACCOUNT OF PIF SETTING IN SERVICE OPTION O04 (VIF) BEFORE STORING INTO
EEPROM
3 – 5
Page 9
21J-FG1RU
3. SHIPPING SETTING & CHECKING
1) The following default data has been factory-set for the E2PROM
follow by INITIAL DATA selected.
ITEMSDATA SETTING
LAST POWERON
LAST TV/AV MODETV MODE
LAST POSITIONCH 1
FLASHBACK CHANNELCH 1
1/2 DIGIT ENTRY2 DIGIT ENTRY
VOLUME0 (Min)
BLUE BACKOFF
OFF TIMER--:-ON TIMER--:-ON TIMER POSITION-ON TIMER VOLUME-REMINDER--:-AFTALL CH ON
COLOR SYSTEMALL CH AUTO
SKIPALL CH OFF
CONTRAST60
COLOR0
BRIGHTNESS0
TINT0
SHARPNESS0
WHITE TEMP0
SURROUNDOFF
TREBLE0
BASS0
BALANCE0(CENTER)
**AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H,AND COMPARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM.
ADDRESS DATAADDRESSDATA
00H:7BH02H:72H
01H:72H03H:76H
*** There are four stages of service mode data. First stage data from V00~V31 (Adjustment Mode).
To go into second stage of service mode data, press MENU key.Second stage data from F01~F142 (Setting Mode).
To go into third stage of service mode data, press MENU key.Third stage data is Check Mode.
To go into fourth stage of service mode data, press MENU key.Fourth stage data from O01~O31 (Option Mode).
***HOTEL MODEO010 (0FF) / 1 (0N)0OPTION SET UP
***HTL-POSO020~99,----OPTION SET UP
***HTL-VOLO030~60,----OPTION SET UP
VIFO040 (38.0) / 1 (38.9)1OPTION SET UP
SECAMO050 (DISABLE) / 1 (ENABLE)1OPTION SET UP
N443(RF)O060 (DISABLE) / 1 (ENABLE)1OPTION SET UP
N358(RF)O070 (DISABLE) / 1 (ENABLE)1OPTION SET UP
FORCE-COLO080 (DISABLE) / 1 (ENABLE)0OPTION SET UP
S-SYSO091(BG ONLY)~15(ALL)15OPTION SET UP
AVO100 (DISABLE) / 1 (ENABLE)1OPTION SET UP
AV2O110 (DISABLE) / 1 (ENABLE)1OPTION SET UP
YUVO120 (DISABLE) / 1 (ENABLE)1OPTION SET UP
S-CTRLO130 (DISABLE) / 1 (ENABLE)1OPTION SET UP
NICAMO140 (DISABLE) / 1 (ENABLE)0OPTION SET UP
A2O150 (DISABLE) / 1 (ENABLE)0OPTION SET UP
TELETEXTO160 (DISABLE) / 1 (ENABLE)0OPTION SET UP
BILLINGUALO170 (DISABLE) / 1 (ENABLE)0OPTION SET UP
LANGUAGEO181~25563OPTION SET UP
SEARCH-SPEEDO191(350)~2(450)~3(550)~4(650)~5(750)3OPTION SET UP
R/C-MENUO200 (ENABLE) / 1 (DISABLE)0OPTION SET UP
LED-CONTO210 (ONE LED) / 1 (TWO LED)0OPTION SET UP
S-BOOSTERO220 (DISABLE) / 1 (ENABLE)0OPTION SET UP
SHARP-LOGOO230 (DISABLE) / 1 (ENABLE)0OPTION SET UP
YUV BKGD ADJO240 (DISABLE) / 1 (ENABLE)0OPTION SET UP
WHITE BACKO250 (DISABLE) / 1 (ENABLE)1OPTION SET UP
BOOSTERO260 (DISABLE) / 1 (ENABLE)0OPTION SET UP
****MESSAGEO270 (DISABLE) / 1 (ENABLE)0OPTION SET UP
****MESSAGE SCROLL TIMEO28Message Display Timing0OPTION SET UP
LNA TUNERO290(Alps) / 1(Matsushita)0OPTION SET UP
ONE CHIP ICO300(M61260 & M61262) / 1(M61266)0OPTION SET UP
MESSAGE INPUT TIMMINGO310~42OPTION SET UP
*** HOTEL MODE
OPERATION OF HOTEL MODE:
WHEN CHANGE SERVICE DATA O01 TO 1, HOTEL MODE IS ON
WHEN HOTEL MODE IS ON,
1. Max volume data is determined by option setting HTL-VOL (O03)
2. Channel position after POWER ON is determined by option setting HOTEL-POS (O02) (if option setting HOTEL-POS
is not set, processing is according to last position data).
3. User data updates of EEPROM regarding the video and audio control is not allowed.
4. Preset mode is disable.
5. CH SETTING menu is not available.
3 – 12
Page 16
21J-FG1RU
4. ADJ ITEM: BUS SET UP (1 ST & 2ND STAGE SERVICE DATA)
ADJUSTMENT PRECAUTION: Makesure TV Set is in “Normal Condition” before switch to Service Mode for Adjustment.
1. PIF ADJUSTMENT
No.
Adjustment point
Tuner IFT
11. Get the tuner ready to receive the CH. E - 9
( PRESET )
Adjustment procedure/conditionsWaveform and others
signal,but with no signal input.
Adjust the PLL data.
2. Connect the sweep generator's output cable to
the tuner antenna. ( RF SWEEP )
3. Adjust the sweep generator's to 80dBµV.
4. Connect the response lead ( use LOW IMPEDANCE probe with wave detector ; see Fig.1 ) to
the tuner's IF output terminal. ( This terminal must
have the probe alone connected ).
5. Set the RF AGC to 0 - 6 V with no saturation with
the waveform.
6. Adjust the tuner IF coil to obtain the waveform as
showninFig.2.
Note: Be sure to keep the tuner cover in posi-
tion during this adjustment.
2
RF-AGC
TAKE OVER
1. Receive "PAL COLOUR BAR" signal.
Signal Strength: 56 ± 1dBµV (75 ohm open)
POINT ADJUSTMENT
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
2. Connect the oscilloscope to TP201 (Tuner’s AGC
Terminal) as shown in Fig. 3-1.
Oscilloscope
0.1V
TP201+
—
Bias box
TV Set
+
—
»»Bias box: About 4.5 V
1000p
10k
Oscilloscope
100k
1n60
1000p
IF OUT
75ohm
Fig.1
E-9 CH
PC
-1.5+/-0.8dB
Fig.2
* for Auto ADJ
1)Receive “PAL COLOUR BAR”
signal.
signal strength: 56
± 1dBµV(75
ohm open)
1)Go to service mode.
2)Go to service data V01, press
R/C to operate auto key ( Hex
C1) and confirm the ‘OK’
display on the screen.
3)If appear NG, increase data
some step and pls repeat step
4)Proceed step 4 & 5 in manual
mode.
2.
Fig. 3-1
3. Call "V01" mode in service mode. Adjust the "V01"
bus data to obtain the Tuner output pin drop
0.1~1.0V below maximum voltage.
4. Change the antenna input signal to 63~67dBµV,
and make sure there is no noise.
5. Turn up the input signal to 90~95 dBµVtobesure
that there is no cross modulation beat.
3 – 14
Page 18
21J-FG1RU
2. PURITY ADJUSTMENT
No.
Adjustment point
PURITY ADJ.1
Adjustment procedure/conditionsWaveform and others
1. Receive the GREEN-ONLY signal. Adjust the
beam current to ~700 µA.
2. Degauss the CRT enough with the degausing coil.
Note: Follow the Job Instruction Sheet to adjust
the magnetic field.
Vertical Bv:+0.045 mT (0.45 gauss)
Horizontal Bh: +0.020 mT (0.20 gauss)
(Reference: page 3-6)
3. Maintain the purity magnet at the zero magnetic
field and keep the static convergence roughly
adjusted.
4. Observe the points a, b, as shown in Fig. 1-1
through the microscope. Adjust the landings to A
rank requirement.
5. Orient the raster rotation to 0 eastward.
6. Tighten up the deflection coil screws.
Tightening torque: 108 ± 20N(11± 2kgf)
7. Make sure the CRT corners landing meet the A
rank requirements. If not, stick the magnet sheet
to correct it.
Note: This adjustment must be done after
warming up the unit for 30 minutes or
longer with a beam current over 700
Note:
Set to service mode by remote con-
µ
A.
troller then press factory process R/C
RGB key to change to RGB mono colour mode.
* For the following colours press R/C RGB(Hex 7E)
key to change.
a
30mm30mm
Fig. 1-1
b
A
B
A=B
Fig. 1-2
Rank "A"
(on the right of the CRT)
A
GREEN
ONLY
BLUE
ONLY
Signal-colour
screen cleared
RED
ONLY
B
A=B
Fig. 1-3
Rank "A"
(on the left of the CRT)
* Press R/C RGB key for 1 sec-
ond in NORMAL MODE, the
colour will change to RGB
mono colour mode.
3 – 15
Page 19
3. CONVERGENCE ADJUSTMENT
21J-FG1RU
No.
1
Adjustment point
CONVERGENCE
ADJ.
(Tobedone
after the purity
adjustment.)
Adjustment procedure/conditionsWaveform and others
1. Receive the "Crosshatch Pattern" signal.
2. Using the remote controller, call NORMAL mode.
Static convergence
1. Turn the 4-pole magnet to a proper opening angle in order to superpose the blue and red colours.
2. Turn the 6-pole magnet to a proper opening angle in order to superpose the green colour over
the blue and red colours.
Dynamic convergence
1. Adjust the convergence on the fringes of the
screen in the following steps.
a) Fig. a: Drive the wedge at point "a" and swing
the deflection coil upward.
b) Fig. b: Drive the wedge at point "b" and "c" and
swing the deflection coil downward.
c) Fig. c: Drive the "c" wedge deeper and swing
the deflection coil rightward.
d) Fig. d: Drive the "b" wedge deeper and swing
the deflection coil leftward.
2. Fix all the wedges on the CRT and apply glass
tape over them.
3. Apply lacquer to the deflection yoke lock screw,
magnet unit (purity, 4-pole, 6-pole magnets) and
magnet unit lock screw.
BGR
B
G
R
Fig. a
RGB
R
G
B
Fig. b
B
RGB
G
R
Fig. c
R
BGR
G
B
Finally received the Red-only and Blue-only signals to make sure there is no other colours on the
screen.
4-pole magnet
6-pole magnet
CRT neck
Lacquer
Purity magnet
20mm
About
100Deg
Lacquer
Wedge
"b"
Fig. d
Wedge "a"
About
100Deg
Wedge
"c"
3 – 16
Page 20
21J-FG1RU
4. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT
No.
1
2
Adjustment point
H-VCO ADJ
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
VIF-VCO ADJ
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
Adjustment procedure/conditionsWaveform and others
(MANUAL ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V03.
3) Connect oscilloscope to IC801 pin11, adj V03 until
freq become 15.625±0.15 KHz
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode.
3) Choose service data V03, by pressing R/C Auto(Hex C1) key, OSD will appear “OK” at screen.
4) If appear “NG” pls repeat step 3.
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V02.
3) Connect oscilloscope to IC801 pin2, adj V02 until
voltage become 2.5±1V.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V02.
3) Press the R/C Auto (Hex C1) key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
This adjustment must be done
after aging at least 3 minutes.
S-TRAP fo
3
ADJ
2
(I
CONTROL)
(AUTO &
MANUAL ADJ)
C BUS
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V21.
3) Connect oscilloscope to TP 801, adj V21 until
voltage become Min (below 5 V).
4) After that pls adj service data V20 & V24 same as
“V21”, V22 to “V21-1”, V23 to “V21+2”.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V21.
3) Press the R/C Auto (Hex C1) key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
3 – 17
Page 21
5. SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT
No.
Adjustment point
1
SCREEN
ADJUSTMENT
2
(I
C BUS
CONTROL)
Adjustment procedure/conditionsWaveform and others
1) In window pattern signal condition.
R-CUTOFF (R-C) UP
R-CUTOFF (R-C) DOWN
2) Go to service mode, then select V00.
G-CUTOFF (G-C) UP
G-CUTOFF (G-C) DOWN
3)
By pressing R/C key S-Mute (Hex E8), R-D
auto switch to 63, B-D auto switch to 63, R-
C auto switch to 127, G-C auto switch to
127, B-C auto switch to 127, Subbrightness V06 auto switch to 127.
Y-mute & Vertical off, screen will be in
B-CUTOFF (B-C) UP
B-CUTOFF (B-C) DOWN
R-DRIVE (R-D) UP
R-DRIVE (R-D) DOWN
B-DRIVE (B-D) UP
B-DRIVE (B-D) DOWN
vertical cut-off condition.
4)
Adjust the Screen so that cut-off line appear in low bright, then judge that whether
the cut-off line appear in Red or Green or
Blue color, in this condition between R-C &
G-C & B-C, fix the data of the color appear
in cut-off line and adj the other two cut-off
data (Note 1) so that cut-off line color become white.
Turn the screen VR of FBT so that cut-off
line just disappear and use R/C by pressing key S-Mute (Hex E8) to disable the Ymute & V-cut so that picture appear in normal mode.
1)
WHITE (HIGH BEAM)
(In Window Pattern Signal)
First use Minolta Color Analyzer CA100, let
the gun point at Dark White position (as
drawing attach), Adj V06 until LUMI-NANCE Y become 5 cd/m2, then let the
gun point at White position (as drawing attach), Adj V04 until LUMINANCE Y become: 160 cd/m2.
Adj the R-D & B-D until the axis of color
temperature become
O
X=0.30, Y=0.31 7500
2)
DARK WHITE (LOW BEAM)
K
(In Window Pattern
Signal)
Let the gun point at Dark White position, if
the color temperature data shift away from
the data adjusted in step 1, adjust R-C, G-
C & B-C but between them, first color
appears in Screen adj item 1)-4 is fixed,
adj the other two so that to obtain the similar axis as above.
** Repeat step 1 & 2 to get a regulated position.
*Note :
WINDOW PATTERN SIGNAL
5.5% IRE
Dark WhiteWhite
Signal using W/B Pattern Generator
SX-1006 (IWATSU) or equivalent.
Window Pattern Signal output level
are as above:
50% IRE
9.5% IRE
3 – 18
Page 22
21J-FG1RU
No.
Adjustment point
Adjustment procedure/conditionsWaveform and others
SUB-
3
BRIGHTNESS
(to be done
after screen,
white balance
adj)
(I
CONTROL)
4
SUBCONTRAST
(to be done
after screen,
white balance
adj,
sub-brightness adj)
(I
CONTROL)
2
C BUS
2
C BUS
1) In Window Pattern Signal condition.
2)
Using Minolta Color Analyzer CA-100, let the
gun point at Dark White position (as attach
drawing), adjust V06 Bus data until LUMI-
NANCEY=3
± 0.5 cd/m2.
1) In Window Pattern Signal condition.
2)
Using Minolta Color Analyzer CA-100, let the
gun point at White position (as attach drawing),
adjust V04 Bus data until LUMINANCE Y = 160
± 10cd/m2
WINDOW PATTERN SIGNAL
Dark White
WINDOW PATTERN SIGNAL
White
Beam Current
5
Check
1) Receive the “Monoscope Pattern” signal.
2) Press R/C to set Picture NORMAL condition.
3) Connect the DC miliammeter between TP 603
(+)&TP602(-).
(Full Scale: 3mA Range)
4) Beam current must be within 1000±100
µA .
3 – 19
Page 23
6. HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT
21J-FG1RU
No.
1
2
3
Adjustment point
H-SHIFT
2
CBUS
(I
CONTROL)
(to be done
after purity
adj)
V-SHIFT
2
CBUS
(I
CONTROL)
(to be done
after purity
adj)
V-SIZE
2
CBUS
(I
CONTROL)
(to be done
after purity,
V-shift adj)
Adjustment procedure/conditionsWaveform and others
1) Receive Monoscope Pattern Signal (PAL 50 Hz)
2) Choose the service data V13.
3) Adjust the V13 bus data to have a balance position
to spec of A=B (as attach drawing)
4) If cannot make it to A=B, adjust from the best point
so that B slightly smaller than A.
1) Receive Monoscope Pattern Signal (PAL 50 Hz)
2) Choose the service data V12.
3) Adjust V12 bus data to have a most acceptable
vertical position, the monoscope pattern should
be Balance in vertical position.
Note: B line (Monoscope middle line) must
same or nearest higher position to the A
mark (Tube middle mark),refer to the attach
drawing.
1) Receive Monoscope Pattern Signal (PAL 50 Hz)
2) Choose the service data V11.
3) Adjust V11 bus data until the overscan become
10±1.5 %
Caution1: Pls aging TV more than 10 minutes
before adjustment.
Caution2: for H-shift & V-shift & V-size adj, after
adj pls switch to Monoscope pattern
signal (NTSC 60 Hz) to confirm all
position are the same.
A
Figure:
AB
OKOKNG
B
SUB-
4
1) Confirm Service data V08 is 46.
SHARPNESS
5
Focus
1) Receive the "Monoscope Pattern" signal.
2) Press R/C to set Picture NORMAL condition.
3) Adjust the focus control to get the best focusing.
7. PAL CHROMA ADJUSTMENT
No.
Adjustment point
SUB COLOUR
1
2
(I
C BUS
CONTROL)
1) Receive the “PAL Colour Bar” signal.
2) Press R/C to set Picture Normal condition.
3) Connect the oscilloscope to R-Amp Transistor
(to be done
after subpicture, subtint adj)
4) Using the R/C call V05 in SERVICE mode. Ad-
5) Clear the SERVICE mode.
Adjustment procedure/conditionsWaveform and others
CyGB
Base(TP 851).
Range :100mV/Div (AC)
(Using 10:1 Probe)
Sweep Time : 10 µ sec/Div
just V05 bus data, so that the 75% White & Red
75%
Y 100% W Mg R
W
portions of PAL Colour Bar be at the same level
shown as Fig 1-1.
Fig. 1-1
3 – 20
Page 24
21J-FG1RU
8. NTSC CHROMA ADJUSTMET
No.
Adjustment point
SUB-TINT1) Receive the "NTSC3.58 Colour Bar" signal thru
1
2
C BUS CONTROL)
(I
AV in.
2) Connect the oscilloscope to B-Amp Transistor
Base (TP853 ).
Range: 100mV/Div. (AC)(Use Probe 10:1)
Sweep time : 10 µsec/Div.
3) In Service mode, go to V07, press R/C Y-mute(Hex E4) or FLASHBACK Key.
4) Call the "V07" data in service mode. Adjust the
"V07" bus data to obtain the waveform shown as
Fig. 1-1.
5) Disable Y-Mute by pressing key(Hex E4) or
FLASHBACK,
9. SECAM CHROMA ADJUSTMENT
No.
Adjustment point
SECAM
1
BLACK LEVEL
R-Y/B-Y
2
(I
C BUS
CONTROL)
1) Receive “SECAM COLOUR BAR” signal.
2) In the service mode, select service data V14.
3) Connect oscilloscope to TP 801.
Range: 20mV/Di v. (AC)(Use Probe 10:1)
Sweep time : 20 µsec/Div.
4) Adjust the V14 so that the offset of R-Y is minimum, shown in Fig 2-1(b), it means adjust the
offset of between No signal line and Signal line to
minimum.
5) In the service mode, select service data V15.
6) Connect oscilloscope to TP 801.
Range: 20mV/Di v. (AC)(Use Probe 10:1)
Sweep time : 20 µsec/Div.
7) Adjust the V15 so that the offset of B-Y to minimum, shown in Fig 2-2(b), it means adjust the
offset of between No signal line and Signal line to
minimum.
Adjustment procedure/conditionsWaveform and others
WYCyGMgR B
Fig. 1-1
then clear the SERVICE mode.
Adjustment procedure/conditionsWaveform and others
Offset
Fig 2-1(a)
Fig 2-1(b)
3 – 21
Offset
Fig 2-2(a)
Fig 2-2(b)
Page 25
10. PROTECTOR OPERATION CHECKING
21J-FG1RU
No.
Adjustment point
BEAM1) Receive "Monoscope Pattern" signal.
1* Select one of Q853/4/5 to do
PROTECTOR
2) Set CONTRAST MAX.
Adjustment procedure/conditionsWaveform and others
each short.
3) Set BRIGHT MAX.
4) During the Collector & Emitter of Q853/4/5 short,
make sure the protector ON and switch to standby
mode.
H, V PROTECTOR1) Receive "Monoscope Pattern" signal.
2
2) Connect output of Bias Box to D602 cathode
(C602 positive).
3) Set voltage of Bias Box to 18V and make sure
the protector is not working.
4) Set voltage of Bias Box to 27V , and make sure
the protector is working.
3
OTHER
PROTECTOR
1) Once finish rectified Electrolytic Capacitor short
testing in +B line, check all possible damaged
components on +B line.
(Use random selected set for inspection)
11. A/V INPUT, OUTPUT & COMPONENT IN CHECKING
No.
Adjustment point
VIDEO AND
1
AUDIO OUTPUT
CHECK
2
VIDEO AND
AUDIO INPUT
CHECK
COMPONENT IN
3
CHECK
Adjustment procedure/conditionsWaveform and others
1)
Receive the "PAL Color Bar" signal (100%
White Color Bar, Sound 400 Hz 100% Mod).
2) Terminate the Video output with a 75 ohm
impedance.
Make sure the output is as specified
(1.0 Vp-p
± 3 dB).
3) Terminate the Audio output with a 10K ohm
impedance.
Make sure the O/P is as specified
(1.5 Vp-p
± 3 dB).
1) Using the TV/VIDEO key on the remote controller, make sure that the modes change in order of
TV, AV1, AV2 & TV again and the video & audio
output are according to the input terminal for
each mode.
1) Connect YUV & Audio signal to Component In
terminal and Audio terminal.
2) Using the TV/VIDEO key on the remote
controler, press it until the modes change to
COMPONENT, confirm output is appear.
TINT key1) Receive the "NTSC Colour Bar" signal thru AV in.
4
1) Receive "Colour Bar" signal.
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check whether the
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check whether the
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check TINT, UP
Adjustment procedure/conditionsWaveform and others
lect CONTRAST.
CONTRAST effect is OK or not.
lect COLOUR.
COLOUR effect is OK or not.
lect BRIGHTNESS.
BRIGHTNESS effect is OK or not.
lect TINT.
for GREEN direction and DOWN for PURPLE direction whether is OK or not.
5
6
8
SHARPNESS
Key
CH DISPLAY
COLOUR
NORMAL Key7
WHITE TEMP
1) Receive "Monoscope Pattern" signal.
2) Set MENU, then go into PICTURE mode to select SHARPNESS.
3) Press Volume Up/Down key to check whether
the SHARPNESS effect is OK or not.
1) All Ch (1~99) will have an OSD display of the
channel number in green colour under AFT ON
condition.
Once in PICTURE or SOUND Mode, and the NOR-
1)
MAL key is pressed, all the settings will be preset to
normal setting accordingly.
(Normal setting value for every mode)
PICTURE MODE
CONTRAST
COLOUR
BRIGHTNESS
TINT
SHARPNESS
WHITE TEMP
1) Receive "Monoscope Pattern" signal.
2) Set MENU, then go into PICTURE mode to select WHITE TEMP.
3) Press Volume Up/Down key to check WHITE
TEMP function The back ground will change to
(shift right) bluish and (shift left) reddish.
:MAX
:CENTER
:CENTER
:CENTER
:CENTER
:CENTER
*SOUND MODE
SURROUND
TREBLE
BASS
BALANCE
: OFF
:CENTER
:CENTER
:CENTER
In NORMAL Mode, when press
NORMAL key, will appear
NORMAL OSD and all setting
PICTURE, SOUND functions
set to NORMAL.
3 – 23
Page 27
No.
Adjustment point
COLOUR
9
SYSTEM
Adjustment procedure/conditionsWaveform and others
Receive the "PAL COLOUR BAR" signal, press
1)
MENU, choose CH-SETTING to select COLOR
modes except PAL, check the COLOUR is not
working properly. Then, select the "PAL" mode.
Check again its colour so that it is working properly.
Receive "SECAM COLOUR BAR" signal, press
2)
MENU, choose CH-SETTING to selectCOLOR
modes except SECAM, check the COLOUR is not
working properly. Then, select the "SECAM" mode.
Check again its colour so that it is working properly.
Receive "NTSC 4.43" signal, press MENU, choose
3)
CH-SETTING to select COLOR modes except
N443, check the COLOUR is not working properly.
Then, select the N443 mode. Check again its colour so that it is working properly.
Receive "NTSC 3.58" signal thru AV, press MENU,
4)
choose CH-SETTING to select COLOR modes except N358, check the COLOUR is not working
properly. Then, select the N358 mode. Check again
its colour so that it is working properly.
21J-FG1RU
10
14
SURROUND
TREBLE11
BASS12
BALANCE13
NOISE MUTE
CHECKING
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
SURROUND.
3)
PressVOLUME UP/DOWN key to check SURROUND I, II and OFF effect.
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
TREBLE.
3)
Press VOLUME UP/DOWN key to check whether
the TREBLE effect is OK or not.
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
BASS.
3)
Press VOLUME UP/DOWN key to check whether
the BASS effect is OK or not.
1)
Receive mono-tone signal.
2)
Set MENU, then go into SOUND MENU to select
BALANCE.
3)
Press VOLUME UP/DOWN key to check whether
the left to right BALANCE effect is OK or not.
1)
Receive "PAL COLOUR BAR" signal.
2)
Turn up the volume control to maximum, make sure
the sound is heard from the speakers. Then put the
unit in no signal state.
1)
then go into SOUND mode to select B/G, I, M. Check the sound
output is not working properly. Select D/K and check the sound
output to make sure it is working properly.
Receive "PAL-I" signal, press MENU, choose CH-SETTING then
2)
go into SOUND mode to select B/G, D/K, M. Check the sound output is not working properly. Select I and check the sound output to
make sure it is working properly.
3)
then go into SOUND mode to select I, D/K, M. Check the sound
output is not working properly. Select B/G and check the sound
output to make sure it is working properly.
Waveform and others
16
OSD
1)
Check OSD LANGUAGE quantity and type for respect model.
LANGUAGE
QUANTITY
CHECK
MODEL
21J-FG1RU2OO----
13. HEADPHONE JACK CHECKING
No.
Adjustment point
HEADPHONE
1
OUTPUT
CHECKING
1) Receive PAL COLOUR BAR with SOUND 400Hz,
100% MODULATION (±50kHz Dev).
2) Maximum volume, and check the headphone
output with 400Hz sound and no sound output
from
14. SHOCK TEST CHECKING
QUANTITY
ENGLISH RUSSIAN CHINESE FRENCH ARABIC MALAY
Adjustment procedure/conditionsWaveform and others
speaker.
No.
Adjustment point
SHOCK TEST1) Hit at the top of TV set for two time.
1
Adjustment procedure/conditionsWaveform and others
2) Check TV set not damage and TV operation operate correctly.
3 – 25
Page 29
15. ROM CORRECTION CHECKING
21J-FG1RU
No.
Adjustment point
ROM CORRECTION
1
CHECK
Adjustment procedure/conditionsWaveform and others
Go to SERVICE mode, press "MENU" key until the
1)
SERVICE mode display as in Figure 1 appeared.*
Check the ROM CORRECTION status by monitoring the
2)
screen, follow the model's setting.
* OTHERS:
INFO
SLV100
SLV200
SLV400
MODELMicon Version
CHK1CHK2FIGURE
SLV700
21J-FG1RURH-IXB226WJZZ(Software Ver. 1.0)ACTNO
CHK1: AC-DET protection loop is to be exited when AD3
(Prot) is detected HIGH so that protection mode
can perform properly
ROM CORRECTION DATA
MCU:M37160MAH-052FP
Soft Ver. V1.00H
ROMCORRECT1...AC-DET protection loop is to be exited when AD3(Prot) is detected HIGH so that protection mode can perform
properly
ROMCORRECT2...
EEPROM Data
SlaveSub.DataComment
$A2$76A0ROMCORRECT1 Permission
$A2$7792ROMCORRECT1 Address(H)
$A2$7814ROMCORRECT1 Address(L)
$A2$790FROMCORRECT1 Code length
$A2$7A07ROMCORRECT1 Checksum
$A2$7BFFROMCORRECT2 Permission
$A2$7CFFROMCORRECT2 Address(H)
$A2$7DFFROMCORRECT2 Address(L)
$A2$7EFFROMCORRECT2 Code length
$A2$7FFFROMCORRECT2 Checksum
$A2$80-87A240 A90220 D2F390 ROMCORRECT1 Data
$A2$88-$8F034C CD91 4C1792 FF ROMCORRECT1 Data
$A2$90-$97FFFF FFFF FFFF FFFF ROMCORRECT1 Data
$A2$98-$9FFFFF FFFFFF FFFFFF ROMCORRECT1 Data
$A2$A0-$A7FFFF FFFFFFFF FFFF ROMCORRECT2 Data
$A2$A8-$AFFFFF FFFF FFFFFFFF ROMCORRECT2 Data
$A2$B0-$B7FFFF FFFFFFFF FFFF ROMCORRECT2 Data
$A2$B8-$BFFFFF FFFF FFFFFFFF ROMCORRECT2 Data
MICON : ZZCHK1 : ACT
SOFT : 1.0CHK2 : NO
Figure 1
NOTE: Add ROM Correction for countermeasure for data change when AGING and AC POWER OFF. There is posibility of changing background
color if no implement ROM Correction when AGING and AC power OFF.
*1 0 : indiv idually selectable rating system 1 : threshold selectable rating system
*2 0 : CATEGO RY bit mask with (01,05) 1st character 1 : CATEG ORY bit mask with (01,05) 2nd character
DEFAULTRANGE W RITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTINGDATA REMARK
FF0-FF
1) Add new
area for
Message Data
for Favorite
Message Two .
21J-FG1RU
LETTER NO.LETTER NO.
4 – 16
Page 46
21J-FG1RU
21J-FG1RU
CHAPTER 5. TROUBLE SHOOTING FLOWCHART
Service Manual
[1] TROUBLE SHOOTING FLOWCHART
NO RASTER
Check NR701.
Check D751, IC702 and IC703.
Check F701.
Check T701 pin (17) voltage
(Approx. 310V at 220V AC)
Check Secondary Main+B
(Approx. 125V)
Check CRT connector Kwire and the signal on it.
Check 185V
Bias on
CRT board.
Does horizontal circuit
oscillate ?
Check
IC801.
Blown out.
Replace the fuse.
The fuse is blown out again.
Check IC701, D701 and
C705.
Check Q752 for 8V regulator
circuit and Q751, Q754 for
5V regulator circuit.
Checking the
protector circuit.
CIRCUITS TO BE CHECKED:
» Tuner.
» PIF.
» Automatic Gain Control.
» (5V), (32V) Power Source.
Noise increases but no signal is
received.
Check the tuner supply voltage LB must
approx. 5V. BT must be approx. 33V.
And check the CH preset data.
Check the tuner AGC at
TP201.
Check pin(58) of
IC801.
Check pin (59) of
IC801, Tuner and
related circuit.
Check Q601 and Q602.
NO PICTURE, NO SOUND
Does the noise level increase at max.
Contrast, Brightness and Sound controls ?
Does noise or signal appear at pin (41)
of IC801 ?
Does noise or
signal appear at
pin (58) of IC801 ?
Does noise or
signal appear at
pin (63) and (64)
of IC801 ?
Check pin (1) of
SF201, Tuner and
related circuit.
No snow noise.
Check IC801 and
related circuit.
Check IC401 and
related circuit.
Check pin (60) at
IC801 and related
circuit.
5 – 1
Page 47
TROUBLE SHOOTING FLOWCHART (Continued)
CIRCUITS TO BE CHECKED:
» Sound Detector Circuit.
» Sound Switch and Att.
Control.
» Audio Output Circuit.
NO SOUND
Does signal appear at pins
(10) and (23) of IC3501 ?
Does signal appear at pins
(6) and (8) of IC301 ?
21J-FG1RU
Check TV sound from pin (54)
of IC801.
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
» Sync. Separator Circuit.
DEFECTIVE VERTICAL AMP.
Check Speaker.
Check IC301 and
peripheral circuit.
NEITHER VERTICAL NOR
Check pins(5), (6), (10) and
(11) of IC801.
AND VERTICAL LINEARITY
Re-adjust vertical size.
(Bus Data)
Vertical linearity and size are
abnormal.
Check C511.
Check R503, R506, R513,
R520 and C515.
NO VERTICAL SCAN
Check IC501 bias.
Check IC501.
5 – 2
Page 48
21J-FG1RU
TROUBLE SHOOTING FLOWCHART (Continued)
NO SPECIFIC COLOUR
Is some colour produced in
B/W broadcast reception ?
Check IC801.
Check Q855 and its adjacent
circuits.
NO SPECIFICATION COLOUR
Is the white balance properly
adjusted ?
Re-adjust the white balance.
Check Q854 and its adjacent
circuits.
Check Q853 and its adjacent
circuits.
“PAL / SECAM”
(NO COLOUR SYNCHRONIZATION)
Check IC801 and bias
control circuit.
The picture colour is yellow.The picture colour is magenta.The picture colour is cyan.
Check X801 (4.43MHz)
5 – 3
Page 49
21J-FG1RU
CHAPTER 6. SOLID STATE DEVICE BASE DIAGRAM
Service Manual
[1] SOLID STATE DEVICE BASE DIAGRAM
TOP VIEW
85
N
1
4
1
BR24L08
CATHODE
1
2
CATHODE
PC123
S4
FXA003WJ
4
3
64
COLLECTOR
ZR
BASEEMITTER
D601A
46
21J-FG1RU
COLLECTOR
BR
BASEEMITTER
B709A
A2
ANODE
EX1393C
46
31
IMZ1A
SIDE VIEW
ECB
2SC3198
P1
ANODE
EX0263T
42
SHARP
IXB226WJZZ
121
IXB226W
ECB
2SD468-C
2SC2235
13
M1501XN
22
GND
COLLECTOR
Vout
SE125NAN17820B
64
1
31
IMX1C/C
3016
115
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1633
1732
NJW1142
TT2140
LOTNo.
112
123
ECB
112
TT2140
646362616059585756555453525150
M61262BF
171819202122232425262728293031
M61262B
49
49
48
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
PX0013
TX0110BM
CATHOD
ANODE (RED)
3. BASE
2. COLLECTOR
1. EMITTER
14
PQ09RDA
17
STRW6553
CATHODE ANODE
DX0445CE
6 – 1
17
STV9302A
~~
+
DX0476CE
_
Page 50
21J-FG1RU
21J-FG1RU
CHAPTER 7. CHASSIS LAYOUT
[1] CHASSIS LAYOUT
H
G
Service Manual
F
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Page 51
21J-FG1RU
CHAPTER 8. BLOCK DIAGRAM
[1] BLOCK DIAGRAM: CRT UNIT
D
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Service Manual
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[2] BLOCK DIAGRAM: HEADPHONE UNIT
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[3] BLOCK DIAGRAM: MAIN UNIT
8 – 2
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8 – 3
Page 54
21J-FG1RU
21J-FG1RU
CHAPTER 9. DESCRIPTION OF SCHEMATIC DIAGRAM
Service Manual
[1] DESCRIPTION OF SCHEMATIC DIAGRAM
SAFETY NOTES:
DISCONNECT THE AC PLUG FROM THE AC OUT-
1.
LET BEFORE REPLACING PARTS.
SEMICONDUCTOR HEAT SINKS SHOULD BE RE-
2.
GARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH "" () ARE IMPOTANT FOR MAINTAINING THE SAFETY OF THE SET.
BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND
PERFORMANCE OF THE SET.
SERVICE PRECAUTION:
THE AREA ENCLOSED BY THIS LINE (-) IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND
AC LINE TO ELIMINATE HAZARD OF ELECTRIC
SHOCK.
NOTES:
The unit of resistance "ohm" is omitted.
1.
(K = 1000 ohms, M = Mega ohm).
All resistors are 1/16 watt, unless otherwise noted.2.
3.
All capacitors are
(P =
µµF).
µF, unless otherwise noted.
VOLTAGE MEASUREMENT CONDITIONS:
Voltages in parenthesis measured with no signal.1.
Voltages without parenthesis measured with 3mV B & W
2.
or Colour signal.
All the voltages in each point are measured with VTVM.3.
WAVEFORM MEASUREMENT CONDITIONS:
The colour bar generator signal of 1.0V peak applied at
1.
pin (41) of IC801.
Approximately 4V AGC bias.2.
CAUTION:
This circuit diagram is a standard one, prited circuits may
be subject to change for product improvement without prior notice.
9 – 1
Page 55
21J-FG1RU
CHAPTER 10. WAVEFORM
[1] WAVEFORMS
21J-FG1RU
Service Manual
1) 0.92 Vp-p
Horiz. Rate
6) 6.42 Vp-p
Horiz. Rate
2) 4.08 Vp-p
Horiz. Rate
7) 2.04 Vp-p
Vert. Rate
3) 4.21 Vp-p
Horiz. Rate
8) 1.81 Vp-p
Vert. Rate
4) 4.38 Vp-p
Horiz. Rate
9) 5.33 Vp-p
Horiz. Rate
5) 6.25 Vp-p
Horiz. Rate
10) 48.33 Vp-p
Horiz. Rate
11) 1.15 KVp-p
Horiz. Rate
16) 5.21 Vp-p
Horiz. Rate
12) 53.33 Vp-p
Vert. Rate
17) 5.38 Vp-p
Vert. Rate
13) 5.04 Vp-p
Vert. Rate
18) 91.67 Vp-p
Horiz. Rate
10 – 1
14) 132.50 Vp-p
Horiz. Rate
19) 94.17 Vp-p
Horiz. Rate
15) 516.67 Vp-p
20) 106.67 Vp-p
Horiz. Rate
Page 56
21J-FG1RU
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21J-FG1RU
CHAPTER 11. SCHEMATIC DIAGRAM
Service Manual
[1] SCHEMATIC DIAGRAM: MAIN UNIT
11 – 1
Page 57
21J-FG1RU
10111213141516171819
11 – 2
Page 58
21J-FG1RU
[2] SCHEMATIC DIAGRAM: CRT UNIT
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[3] SCHEMATIC DIAGRAM: HEADPHONE UNIT
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21J-FG1RU
CHAPTER 12. PRINTED WIRING BOARD ASSEMBLIES
Service Manual
[1] PWB-B: CRT UNIT
1. CRT UNIT (Component Side)
Component Side
D
C
B
21J-FG1RU
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[2] PWB-C: HEADPHONE UNIT
1. HEADPHONE UNIT (Component Side) (Chip Parts Side)
D
Component SideChip Parts Side
C
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A
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Page 60
21J-FG1RU
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[3] PWB-A: MAIN UNIT
1. MAIN UNIT (Component Side)
12 – 2
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21J-FG1RU
10111213141516171819
12 – 3
Page 62
21J-FG1RU
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2. MAIN UNIT (Chip Parts Side)
12 – 4
Page 63
21J-FG1RU
10111213141516171819
12 – 5
Page 64
PARTS GUIDE
No. S75L821JFG1RU
21J-FG1RU
[1]PICTURE TUBE
[2]PRINTED WIRING BOARD
ASSEMBLIES
[3]MAIN UNIT
[4]CRT UNIT
[5]HEADPHONE UNIT
MODEL
CONTENTS
21J-FG1RU
[6]MISCELLANEOUS PARTS
[7]CABINET PARTS
[8]SUPPLIED ACCESSORIES
[9]PACKING PARTS
Parts marked with "" are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
R721 VRD-RA2BE222JYAAR2.2k 1/8W Carbon
R722 VRD-RA2BE333GYABR33k 1/8W 2% Carbon
R725 VRD-RM2HD821JYAAR820 1/2W Carbon
R726 VRN-RL2HCR47J+ABR0.47 1/2W Metal Film
R751 VRC-UA2HG825KYAAR8.2 M 1/2W Solid
!
R752 VRC-UA2HG825KYAAR8.2 M 1/2W Solid
!
R753 VRD-RM2HD334JYAAR330k 1/2W Carbon
R754 VRN-RL3AB8R2J+ABR8.2 1W Metal Film
R756 VRS-RG3DB121J+ABR120 2W Metal Oxide
R801 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R802 VRS-CY1JF682JYAAR6.8k 1/16W Metal Oxide
R803 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
DESCRIPTION
5
Page 69
21J-FG1RU
NO.PARTS CODE
PRICE
RANK
NEW
MARK
PAR T
RANK
[3] MAIN UNIT
R804 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R805 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R806 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R807 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R370 VRS-CY1JF471JYAAR470 1/16W Metal Oxide
R371 VRS-CY1JF471JYAAR470 1/16W Metal Oxide
J351 QJAKJ0101SEZZAERJack
P352 QPLGNA108WJZZABRPlug
P351 QPLGNA109WJZZABRPlug
R808 VRD-RA2BE273JYAAR27k 1/8W Carbon
R812 VRD-RA2BE101JYAAR100 1/8W Carbon
R814 VRS-CY1JF473JYAAR47k 1/16W Metal Oxide
R815 VRS-CY1JF473JYAAR47k 1/16W Metal Oxide
R816 VRS-CY1JF223JYAAR22k 1/16W Metal Oxide
R817 VRS-CY1JF473JYAAR47k 1/16W Metal Oxide
R821 VRS-CY1JF681JYAAR680 1/16W Metal Oxide
R823 VRD-RA2BE101JYAAR100 1/8W Carbon
R824 VRD-RA2BE101JYAAR100 1/8W Carbon
R826 VRD-RA2BE101JYAAR100 1/8W Carbon
R829 VRD-RA2BE472JYAAR4.7k 1/8W Carbon
R830 VRS-CY1JF393JYAAR39k 1/16W Metal Oxide
R831 VRD-RA2BE331JYAAR330 1/8W Carbon
R832 VRS-CY1JF822JYAAR8.2k 1/16W Metal Oxide
R833 VRS-CY1JF220JYAAR22 1/16W Metal Oxide
R835 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R837 VRD-RM2HD151JYAAR150 1/2W Carbon
R838 VRD-RA2BE105JYAAR1 M 1/8W Carbon
R839 VRD-RA2BE101JYAAR100 1/8W Carbon
R840 VRS-CY1JF124JYAAR120k 1/16W Metal Oxide
R841 VRD-RA2BE152JYAAR1.5k 1/8W Carbon
R842 VRS-CY1JF562JYAAR5.6k 1/16W Metal Oxide
R843 VRD-RA2BE103JYAAR10k 1/8W Carbon
R1002 VRS-CY1JF183JYAAR18k 1/16W Metal Oxide
R1003 VRS-CY1JF822JYAAR8.2k 1/16W Metal Oxide
R1005 VRD-RA2BE101JYAAR100 1/8W Carbon
R1006 VRS-CY1JF822JYAAR8.2k 1/16W Metal Oxide
R1007 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1008 VRS-CY1JF183JYAAR18k 1/16W Metal Oxide
R1009 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1011 VRD-RA2BE101JYAAR100 1/8W Carbon
R1012 VRD-RA2BE101JYAAR100 1/8W Carbon
R1013 VRD-RA2BE391JYAAR390 1/8W Carbon
R1024 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R1027 VRS-CY1JF104JYAAR100k 1/16W Metal Oxide
R1031 VRD-RA2BE101JYAAR100 1/8W Carbon
R1032 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R1034 VRS-CY1JF104JYAAR100k 1/16W Metal Oxide
R1035 VRD-RA2BE101JYAAR100 1/8W Carbon
R1036 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1037 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1038 VRS-CY1JF562JYAAR
R1039 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R1041 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R1042 VRD-RA2BE101JYAAR100 1/8W Carbon
R1043 VRS-CY1JF104JYAAR100k 1/16W Metal Oxide
R1045 VRD-RA2BE101JYAAR100 1/8W Carbon
R1046 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R1047 VRS-CY1JF183JYAAR18k 1/16W Metal Oxide
R1048 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R1049 VRS-CY1JF183JYAAR18k 1/16W Metal Oxide
R1050 VRD-RA2BE103JYAAR10k 1/8W Carbon
R1051 VRD-RA2BE104JYAAR100k 1/8W Carbon
R1053 VRD-RA2BE101JYAAR100 1/8W Carbon
R1054 VRD-RA2BE101JYAAR100 1/8W Carbon
R1055 VRD-RA2BE332JYAAR3.3k 1/8W Carbon
R1056 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R1057 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R1061 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R1063 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1064 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1065 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1066 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R1072 VRS-CY1JF221JYAAR220 1/16W Metal Oxide
R1073 VRD-RA2BE101JYAAR100 1/8W Carbon
R1074 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R1076 VRS-CY1JF102JYAAR1k 1/16W Metal Oxide
R1078 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R1079 VRS-CY1JF332JYAAR3.3k 1/16W Metal Oxide
R1087 VRS-CY1JF391JYAAR390 1/16W Metal Oxide
R1170 VRD-RA2BE103JYAAR10k 1/8W Carbon
R1171 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1172 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R1511 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
R1801 VRS-CY1JF222JYAAR2.2k 1/16W Metal Oxide
R1802 VRD-RA2BE124JYAAR120k 1/8W Carbon
5.6k 1/16W Metal Oxide
DESCRIPTION
6
Page 70
21J-FG1RU
NO.PARTS CODE
PRICE
RANK
NEW
MARK
PAR T
RANK
[3] MAIN UNIT
R1849 VRS-CY1JF272JYAAR2.7k 1/16W Metal Oxide
R1850 VRS-CY1JF681JYAAR680 1/16W Metal Oxide
R1851 VRS-CY1JF221JYAAR220 1/16W Metal Oxide
R1852 VRS-CY1JF221JYAAR220 1/16W Metal Oxide
R1853 VRS-CY1JF221JYAAR220 1/16W Metal Oxide
R1854 VRS-CY1JF103JYAAR10k 1/16W Metal Oxide
R1855 VRS-CY1JF122JYAAR1.2k 1/16W Metal Oxide
R1856 VRS-CY1JF223JYAAR22k 1/16W Metal Oxide
R1894 VRD-RA2BE223JYAAR22k 1/8W Carbon
R1895 VRS-CY1JF473JYAAR47k 1/16W Metal Oxide
R1896 VRS-CY1JF473JYAAR47k 1/16W Metal Oxide
R3006 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R3009 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R3501 VRD-RA2BE101JYAAR100 1/8W Carbon
R3502 VRD-RA2BE101JYAAR100 1/8W Carbon
R3503 VRD-RA2BE101JYAAR100 1/8W Carbon
R3504 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R3505 VRD-RA2BE101JYAAR100 1/8W Carbon
R3506 VRS-CY1JF101JYAAR100 1/16W Metal Oxide
R3507 VRD-RA2BE101JYAAR100 1/8W Carbon
R3508 VRD-RA2BE101JYAAR100 1/8W Carbon
R3509 VRD-RA2BE100JYAAR10 1/8W Carbon
RJ1 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ10 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ12 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ15 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ16 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ42 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ43 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ61 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
RJ63 VRS-CY1JF000JYAAR0 1/16W Metal Oxide
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
TQ1921-S
Aug. 2005 Printed in Japan
Design and Production Information
Design: SEM
Production : SREC
MY. KD
SHARP CORPORATION
AV Systems Group
CS Promotion Center
Yaita, Tochigi 329-2193, Japan
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