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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-124
FACTORY MODEL: FB770H
MODEL: F700B (FB770H-EL)
*( ) ID LABEL Model No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
SPECIFICATIONS ................................................... 2 DESCRIPTION OF BLOCK DIAGRAM................... 11
SAFETY PRECAUTIONS ........................................ 3 ADJUSTMENT ...................................................... 13
TIMING CHART ....................................................... 4 TROUBLESHOOTING GUIDE .............................. 15
OPERATING INSTRUCTIONS ................................ 5 EXPLODED VIEW................................................... 25
CONTROL LOCATION ............................................ 7 REPLACEMENT PARTS LIST ............................... 27
WIRING DIAGRAM ................................................. 8 PIN CONFIGURATION........................................... 33
DISASSEMBLY ....................................................... 9 SCHEMATIC DIAGRAM ......................................... 38
BLOCK DIAGRAM ................................................. 10 PRINTED CIRCUIT BOARD................................... 40
SPECIFICATIONS
1. PICTURE TUBE 3-2. Power Consumption
Size : 17 inch
DefIection Angle : 90° MODE POWER CONSUMPTION LED COLOR
Neck Diameter : 29.1 mm NORMAL (ON) 73 W GREEN
Stripe Pitch : 0.24 mm
STAND-BY less than 15 W
Face Treatment : W-ARASC (Anti-Reflection and AMBER
Anti-Static Coating) SUSPEND less than 15 W
Internal : Anti-Glare OFF less than 5W AMBER
2. SIGNAL 4. DISPLAY AREA
2-1. Horizontal & Vertical Sync 4-1. Active Video Area :
1) Input Voltage Level : Low=0~1.2V, High=2.5~5.5V · Max Image Size - 325.4 x 244.1 mm (12.81" x 9.61")
2) Sync Polarity : Positive or Negative · Preset Image Size - 310 x 230 mm (12.20" x 9.06")
4-2. Display Color : Full Colors
2-2. Video Input Signal 4-3. Display Resolution : 1280 x 1024 / 60Hz(Max)
1) Voltage Level : 0 ~ 0.7 Vp-p (Non-Interlace)
a) Color 0, 0 : 0 Vp-p 4-4. Video Bandwidth : 110 MHz
b) Color 7, 0 : 0.467 Vp-p
c) Color 15, 0 : 0.7 Vp-p 5. ENVIRONMENT
2) Input Impedance : 75 5-1. Operating Temperature: 0°C ~ 40°C
3) Video Color : R, G, B Analog (Ambient)
4) Signal Format : Refer to the Timing Chart 5-2. Relative Humidity : 10%~ 90%
(Non-condensing)
2-3. Signal Connector 5-3. Altitude : 5,000 m
3 row 15-pin Connector (Attached)
6. DIMENSIONS (with TILT/SWIVEL)
2-4. Scanning Frequency Width : 415 mm (16.34 inch)
Horizontal : 30 ~ 70 kHz Depth : 432 mm (17.00 inch)
Vertical : 50 ~ 160 Hz Height : 413 mm (16.25 inch)
7. WEIGHT (with TILT/SWIVEL)
3. POWER SUPPLY Net Weight : 17.0 kg (37.48 lbs.)
3-1. Power Range Gross Weight : 19.5 kg (42.99 lbs.)
AC 110~220V (Free Voltage), 60Hz, 2.0A Max.
-2-
SAFETY PRECAUTIONS
SAFETY-RELATED COMPONENT WARNING! X-RADIATION
There are special components used in this color monitor The only potential source of X-radiation is the picture tube.
which are important for safety. These parts are marked However, when the high voltage circuitry is operating
on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem.
parts list. It is essential that these critical parts should be The basic precaution which must be exercised is keep the
replaced with the manufacturer's specified parts to high voltage at the factory recommended level; the normal
prevent X-radiation, shock, fire, or other hazards. Do not high voltage is about 25.8kV. The following steps describe
modify the original design without obtaining written how to measure the high voltage and how to prevent X-
permission from manufacturer or you will void the original radiation.
parts and labor guarantee.
Note : It is important to use an accurate high voltage
CAUTION: No modification of any circuit should be meter calibrated periodically.
attempted.
Service work should be performed only after · To measure the high voltage, use a high impedance
you are thoroughly familiar with all of the high voltage meter, connect () to chassis and (+) to
following safety checks and servicing the CDT anode cap.
guidelines. · Set the brightness control to maximum point at full
white pattern.
SAFETY CHECK · Measure the high voltage. The high voltage meter
Care should be taken while servicing this color monitor should be indicated at the factory recommended level.
because of the high voltage used in the deflection circuits. · If the meter indication exceeds the maximum level,
These voltages are exposed in such areas as the immediate service is required to prevent the possibility
associated flyback and yoke circuits. of premature component failure.
· To prevent X-radiation possibility, it is essential to use
FIRE & SHOCK HAZARD the specified picture tube.
An isolation transformer must be inserted between the
color monitor and AC power line before servicing the
chassis.
· In servicing, attention must be paid to the original lead
dress specially in the high voltage circuit. If a short CAUTION:
circuit is found, replace all parts which have been Please use only a plastic screwdriver to protect yourself
overheated as a result of the short circuit. from shock hazard during service operation.
· All the protective devices must be reinstalled per the
original design.
· Soldering must be inspected for the cold solder joints,
frayed leads, damaged insulation, solder splashes, or
the sharp points. Be sure to remove all foreign
materials.
IMPLOSION PROTECTION
All used display tubes are equipped with an integral
implosion protection system, but care should be taken to
avoid damage and scratching during installation. Use only
same type display tubes.
-3-
TIMING CHART
VIDEO
C B
SYNC
D E F
A
<< Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >>
H/V Sync Total Period Video Active Blanking Time Sync Duration Back Porch Front Porch
Mode Frequency (A) Time (B) (C) (E) (F) (D) Resolution
Sort Polarity
H 37.50 26.67 20.32 6.35 2.03 3.81 0.51 640x480
1
V 74.99 13.335 12.802 0.533 0.080 0.427 0.026 75Hz
H + 46.88 21.33 16.16 5.17 1.62 3.23 0.32 800x600
2
V + 75.01 13.331 12.798 0.533 0.064 0.448 0.021 75Hz
H + 53.68 18.63 14.22 4.41 1.14 2.70 0.57 800x600
3
V + 85.07 11.755 11.178 0.577 0.056 0.503 0.018 85Hz
H + 68.677 14.561 10.836 3.725 1.016 2.201 0.508 1024x768
4
V + 85.00 11.764 11.182 0.582 0.044 0.524 0.014 85Hz
* Mode 1~Mode 4: Basic Mode
-4-
OPERATING INSTRUCTIONS
FRONT VIEW REAR VIEW
AC Power Socket
See Front Control Panel Power Button
D-Sub Signal Connector
Front Control Panel
3 4 5 2 1
1. Power Button 4. Button
This button is used to turn the monitor ON and Use these buttons to choose or adjust items in
OFF. the on screen display.
2. Power Indicator 100
Button Bring up Contrast adjustment
This Indicator lights up green when the monitor 100
operates normally. If the monitor is in DPM (Energy Button Bring up Brightness adjustment
Saving) mode, this indicator color changes to
amber. The Contrast and Brightness functions are also available in
the On Screen Display (OSD) menu.
3. MENU (or OSD) Button
Use this button to enter or exit the on screen 5. SELECT (or SET) Button
display. Use this button to enter a selection in the on
screen display.
-5-
OSD New Function
Clear Time Menu
On Clear Time Menu, Right Triangle button when
button is pressed on the "Clear Time" menu,
small window will be displayed on the right.
On the bottom of OSD, CDT Time is Displayed.
S P E C IAL
DEGAUSS ON
CLEAR TIME ON
RESET ON
MOIRE H: 0 / V: 0
PURITY 50
1024 x 768 / 85 Hz
PRESET MODE
1 2 CDT TIME: 00023HR
press
button
S P E C IAL S P E C IAL
DEGAUSS DEGAUSS
CLEAR TIME OK press RECALL OK
RESET CANCEL button RESET CANCEL
MOIRE MOIRE
PURITY PURITY
1024 x 768 / 85 Hz 1024 x 768 / 85 Hz
PRESET MODE PRESET MODE
1 2 CDT TIME: 00023HR press 1 2 CDT TIME: 00023HR
button
press
SET
button
S P E C IAL S P E C IAL
DEGAUSS DEGAUSS ON
RECALL OK SET RECALL ON
RESET CANCEL RESET ON
MOIRE DONE press SET MOIRE H: 0 / V: 0
PURITY button PURITY 50
1024 x 768 / 85 Hz 1024 x 768 / 85 Hz
PRESET MODE PRESET MODE
1 2 CDT TIME: 00023HR 1 2 CDT TIME: 00023HR
Done Message Display
-6-
CONTROL LOCATIONS
VR901: B+ Adjustment
(50V Line)
-7-
WIRING DIAGRAM
Anode Cap
DY-Pin
Degaussibg Coil
P801 P902
P702
P201-
(Control PCB) P502
P405
P501
P402
-8-
DISASSEMBLY
1. TILT/SWIVEL & BACK COVER REMOVAL
1) Set the monitor face downward.
2) Carefully remove the Tilt/Swivel by pulling it upward.
3) Remove tne two screws (a).
4) Pressing the latch (b), Back cover by pushing it upward. (See Figure. 1)
4) Release the latch (c). (See Figure. 2 and Tip Spec.)
5) Slide the Back Cover away from the Front Cabinet of the monitor.
Figure.1
(a)
(a)
(b)
Tip Spec.
A(Width) : 5.0~15.0mm
C
B(Depth) : 0.6~0.9mm
Tip
Figure.2 C(Height) : 12.0mm A
B
Bac
k Co
ver
(c)
Ca
bin
et
-9-
105V H.V
OSD CONTROL
Heater ( 6.3V )
BRIGHTNESS Signal
H-Sync Sig R
CONTRAST Cable VIDEO
H/V POSITION V-Sync Sig G VIDEO
PRE-AMP DY CDT
H/V SIZE I2C DATA(SDA) B MAIN AMP
(IC302)
SPCC (IC303)
TRAPEZOID I2C CLOCK(SCL) STV9211
STV9556
PIN BALANCE
G1
PARALLELOGRAM
ROTATION MICOM OSD IC 5V 13V
5V (IC301) I2C
RECALL (IC401) SCL / SDA
DEGAUSS 5V H/V Sync, WT6805
Screen(G2)
R/G/B
OSD TIME PWM Control
I2C Drive/Contrast
COLOR CURVE
MOIRE Cut-Off
LANGUAGE
Static Focus
RESET 13V
Dynamic Focus
VIDEO LEVEL
X-RAY
E2PROM I2C 12V Protection
Vertical Blanking,
6.3V (IC402) Circuit
Brightness Control
Purity 13V
Control -10V 13V
COIL
Purity
Circuit H/V Sync Processor - 160V
- 10 -
6.3V Vout 1
( IC701 )
TILT 13V V-OUT
Control I2C STV6888 Vout 2 40V
( IC601)
COIL
Circuit
H/V STV9302
Degaussing Sync
FBT
BLOCK DIAGRAM
Circuit 13V
105V ( T701 )
COIL
50V H-OUT
SMPS H-DRV ( Q706) B+
DEGAUSSING TILT
TRANS 13V 13V
(T901)
Line 6.3V 400V
H-Linearity
Filter Correction
Dynamic Auto
Focus Beam
5V Circuit Limit
SMPS Voltage DC/DC Converter
DPM Regulating B-DRV STEP UP
CONTROL -10V
CONTROL Circuit
POWER INPUT (IC901) CIRCUIT 50V
100~240VAC
(50/60Hz) D/D Feed Back
DESCRIPTION OF BLOCK DIAGRAM
1. Line Filter & Associated Circuit. 6. Horizontal and Vertical Oscillation.
This is used for suppressing noise of power input line This circuit generates the horizontal pulse and the vertical
flowing into the monitor and/or some noise generated in pulse by taking the H and V sync signal.
this monitor flowing out through the power input line. This circuit consists of the STV9302(IC601) and the
That is to say, this circuit prevents interference between associated circuit.
the monitor and other electric appliances.
7. D/D(DC to DC) Converter.
2. Degauss Circuit & Coil. This circuit supplies DC voltage to the horizontal deflection
The degauss circuit consists of the degaussing coil, the output circuit by increasing DC 50V which is the
PTC(Positive Temperature Coefficient) thermistor(TH901), secondary voltage of the SMPS in accordance with the
and the relay(RL901). This circuit eliminates abnormal input horizontal sync signal.
color of the screen automatically by degaussing the
shadow mask in the CRT during turning on the power 8. Side-Pincushion & Trapezoid Correction Cirucit.
switch. When you need to degauss in using the monitor, This circuit improves the side-pincushion and the
select DEGAUSS on the OSD menu. trapezoid distortion of the screen by mixing parabola and
saw-tooth wave to output of the horizontal deflection D/D
3. SMPS(Switching Mode Power Supply). converter which is used for the supply voltage(B + ) of the
This circuit is working of 90~264V AC(50/60Hz). deflection circuit.
The operation procedure is as follows:
1) AC input voltage is rectified and smoothed by the bridge 9. Horizontal Deflection Output Circuit.
diodes (D900) and the capacitor (C908). This circuit makes the horizontal deflection by supplying
2) The rectified voltage(DC) is applied to the primary coil the saw-tooth current to the horizontal deflection yoke.
of the transformer(T901).
3) The control IC(IC901) generates switching pulse to turn 10. High Voltage Output & FBT(Flyback Transformer).
on and off the primary coil of the transformer (T901) The high voltage output circuit is used for generating pulse
repeatedly. to the primary coil of the FBT(Flyback Transformer
4) Depending on turn ratio of the transformer, the secondary of the FBT and it is supplied to the anode,
secondary voltages appear at the secondary coils of the focus, and screen voltage of the CRT.
transformer(T901).
5) These secondary voltages are rectified by each 11. H-Linearity Correction Circuit.
diode(D941, D942, D951, D961, D971) and operate other This circuit corrects the horizontal linearity for each
circuit. (horizontal and vertical deflection, video amplifier, horizontal sync frequency.
...etc.)
12. Vertical Output Circuit.
4. X-ray Protection. This circuit takes the vertical ramp wave from the
If the high voltage of the FBT reaches up to 29kV (abnormal STV6888(IC701) and performs the vertical deflection by
state), IC401(MICOM) pin 35 Sensing from FBT directly. supplying the saw-tooth current to the vertical deflection
Then MICOM control IC701 (Deflection controller) to stop yoke.
Horizontal drive pulse and stop Horizontal Deflection.
13. Dynamic Focus Output Circuit.
5. Micom(Microprocessor) Circuit. This circuit takes the horizontal and the vertical parabola
The operating procedure of Micom(Microprocessor) and waves from the STV6888(IC701) and amplifies it to
its associated circuit is as follows: maintain constant focus on center and corners in the
1) H and V sync signal is supplied from the signal cable. screen.
2) The Micom(IC401) distinguishes polarity and
frequency of H and V sync. 14. H & V Blanking and Brightness Control.
3) The Micom sets operating mode and offers the Blanking circuit eliminates retrace line by supplying
controlled data. (H-size, H-position, V-size, ... etc.) negative pulse to the G1 of the CRT. And Brightness
4) The controlled data of each mode is stored in itself. circuit is used for control of the screen brightness by
changing DC level of the G1.
5) User can adjust screen condition by each OSD
function. The data of the adjusted condition is stored
in EEPROM(IC402).
- 11 -
15. Image Rotation (Tilt) Circuit. 17. Video Output Amp Circuit.
This circuit corrects the tilt of the screen by supplying the This circuit amplifies the video signal which comes from
image rotation signal to the tilt coil which is attached near the video pre-amp circuit and amplified it to applied the
the deflection yoke of the CRT. CRT cathode.
16. Video Pre-Amp Circuit.
This circuit amplifies the analog video signal from 0-0.7V
to 0-4V. It is operated by taking the clamp, R, G, B drive
and contrast signal from the Micom(IC401).
- 12 -
ADJUSTMENT
GENERAL INFORMATION
All adjustment are thoroughly checked and corrected 10) Adjust balance of pin-balance as arrow keys to be
when the monitor leaves the factory, but sometimes the best condition.
several adjustments may be required. 11) DIST. ADJ. FOS. ADJ command.
Adjustment should be following procedure and after 12) Adjust V-SIZE as arrow keys to 230±2mm.
warming up for a minimum of 30 minutes. 13) Adjust V-POSITION as arrow keys to center of the
screen.
· Alignment appliances and tools.
14) Adjust H-SIZE as arrow keys to 310±2mm.
- IBM compatible PC.
15) Adjust H-POSITION as arrow keys to center of the
- Programmable Signal Generator.
(eg. VG-819 made by Astrodesign Co.) screen.
- EPROM or EEPROM with saved each mode data. 16) Adjust S-PCC (Side-Pincushion) as arrow keys to be
- Alignment Adaptor and Software. the best condition.
- Digital Voltmeter. 17) Adjust TRAPEZOID as arrow keys to be the best
- White Balance Meter. condition.
- Luminance Meter. 18) Save of the Mode 1.
- High-voltage Meter. 19) Display from Mode 2 to 4 and repeat above from
number 12) to 19)
AUTOMATIC AND MANUAL DEGAUSSING 20) PRESET EXIT Y (Yes) command.
The degaussing coil is mounted around the CDT so that
automatic degaussing when turn on the monitor. But a 3. Adjustment for White Balance and Luminance.
monitor is moved or faced in a different direction, become 1) Set the White Balance Meter.
poor color purity cause of CDT magnetized, then press 2) Press the DEGAUSS on the OSD menu for
DEGAUSS on the OSD menu. demagnetization of the CDT.
3) COLOR ADJ. LUMINANCE command of the
ADJUSTMENT PROCEDURE & METHOD alignment program.
- Install the cable for adjustment such as Figure 1and run
4) Set Brightness and Contrast to Max position.
the alignment program on the DOS for IBM compatible PC.
5) Display color 0,0 pattern at Mode 4.
- Set external Brightness and Contrast volume to max position.
6) COLOR ADJ. BIAS ADJ. COLOR No. 1
command of the alignment program.
1. Adjustment for High-Voltage.
7) Check whether green color or not at R-BIAS and G-
1) Display cross hatch pattern at Mode 4.
BIAS to min position and B-BIAS to 250(CD) and
2) DIST.ADJCTRL PWM High Voltage Command.
Sub-Brightness to 127(2F) position. Adjust G2
3) Adjust High Voltage to 25.8kV±0.1 kVdc.
(screen) command to 0.4 ± 0.05FL of the raster
4) Press Enter Key.
luminance.
2. Adjustment for Factory Mode (Preset Mode). 8) Adjust R-BIAS and G-BIAS command to x=0.283±
1) Display cross hatch pattern at Mode 1. 0.005 and y=0.298 ±0.005 on the White Balance
2) Run alignment program for FB770H on the IBM Meter with PC arrow keys.
compatible PC. 9) Adjust SUB-Brightness command to 0.4±0.1FL of the
3) EEPROM ALL CLEAR Y(Yes) command. raster luminance.
Do not run this procedure unless the 10) Adjust repeat number 8).
EEPROM is changed. All data in EEPROM (mode 11) After push the "ENTER" key.
data and color data) will be erased. 11-1) COMMAND PRESET START Y(Yes) command.
4) Power button of the monitor turn off turn on. 12) Display color 15,0 full white pattern at Mode 4.
5) COMMANDPRESET STARTY(Yes) command. 13) DRIVE ADJ. No 1. command.
6) DIST. ADJ. CTRL PWM TILT command. 14) Set Brightness and Contrast to Max position.
7) Adjust tilt as arrow keys to be the best condition. 15) Set SUB-CONTRAST 220(CD) (decimal) position.
8) DIST. ADJ. BALANCE command. 16) Set B-DRIVE to 150(96) at DRIVE of the alignment
9) Adjust parallelogram as arrow keys to be the best program.
condition.
- 13 -
17-1) Adjust R-DRIVE and G-DRIVE command to white 4. Input EDID Data.
balance x=0.283±0.003 and y=0.298±0.003 on the 1) Display color 15,0 cross hatch pattern at Mode 4.
White Balance Meter with PC arrow keys. 2) EEPROM Write EDID command and confirm
17-2) Display color 15,0 window pattern (70x70mm) at mode 4. "EDID Write OK!!" message of monitor.
3) Exit from the alignment program.
18) Adjust SUB-CONTRAST command to 50±2FL .
4) Power switch OFF/ON for EDID data save.
19) Display color 15,0 full white patten at Mode 4.
20) Set Brightness and Contrast to Max position.
5. Adjustment for Focus.
21) COLOR ADJ. LUMINANCE ABL command. 1) Set the Brightness and Contrast to max position.
22) Adjust ABL to 32±1FL of the luminance. 2) Display H character in full screen at Mode 4.
23) After push the "ENTER" key, and "COMMAND 3) Adjust two Focus control on the FBT that focus
PRESET EXIT Y(Yes)" command. should be the best condition.
24) Exit from the program.
- 14 -
TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
CHECK NO TROUBLE IN FUSE
FUSE OK? (F901)
YES
CHECK
C908 VOLTAGE? NO TROUBLE IN
(AC120V: 160VDC, D900
AC220V: 304VDC)
YES
CHECK
Q901 PIN 6
WAVEFORM NO TROUBLE IN
(SQUARE WAVE Q901
COMES OUT?)
YES
CHECK
NO TROUBLE IN
D941, D942, D951,
D941, D942,
D961, D971
D951, D961, D971
VOLTAGE?
YES
TROUBLE IN
Q903, Q952,
Q951, Q942, Q941
- 15 -
2. NO CHARACTER
NO CHARACTER
CHECK
NO TROUBLE IN
IC302
P302 5V LINE
PIN 7(5V) ?
YES
CHECK TROUBLE IN
NO
IC302 PIN 1, 3, 5? PC SIGNAL,
P301 SIGNAL CABLE
YES
CHECK NO TROUBLE IN
IC302 PIN 14, 16, 18 ? IC302
YES
CHECK
NO TROUBLE IN
IC303 PIN 7 (105V)
P303 12V LINE/
PIN 3 (13V) ?
80V LINE
YES
CHECK
IC303 NO TROUBLE IN IC303
PIN 1, 2, 4 ?
YES
CHECK TROUBLE IN
NO
R, G, B CATHODE R331~R333, L311~L313
VOLTAGE? D307~D312
YES
TROUBLE IN
CRT SOCKET
- 16 -
3. NO RASTER
NO VIDEO
(POWER INDICATOR ON)
CHECK
POWER INDICATOR AMBER DPM MODE
GREEN or AMBER? (NO H and/or V SYNC)
GREEN
CHECK NO TROUBLE IN
D712 ANODE
D712
(-160V)?
YES
CHECK NO TROUBLE IN
G1 VOLTAGE? Q799
(-55V~ -15V)
YES
CHECK NO TROUBLE IN
CDT HEAT
D941, Q942, Q941
VOLTAGE? (6.3V)
YES
TROUBLE IN
CDT
- 17 -
4. NO HORIZONTAL DEFLECTION
NO H-DEFLECTION
(ONE VERTICAL LINE)
CHECK NO TROUBLE IN
Q706? Q706
YES
CHECK
NO TROUBLE IN
B+ VOLTAGE
(50V)? 50V LINE
YES
CHECK
T701(FBT) PIN 2 NO TROUBLE IN
(31KHZ 60V, Q719, Q703, D704, D710
69KHZ 140V) ?
YES
CHECK
NO TROUBLE IN
Q705 COLLECTOR
Q705
WAVEFORM?
YES
0V
T
TROUBLE IN
T701, P701
- 18 -
5. TROUBLE IN H-LINEARITY
UNBALANCED OF H-LIN.
CHECK
NO TROUBLE IN
IC401
PIN 5, 6, 7 ? IC401 (MICOM)
YES
CHECK NO TROUBLE IN
Q711~Q716? Q711 ~ Q716
YES
CHECK NO TROUBLE IN
L703? L703
YES Cs SIGNAL TABLE
HORIZONTAL
FREQUENCY(fH) Cs1 Cs2 Cs3
30K ~ 33.9K L L L
TROUBLE IN
34K ~ 38.9K L H L
C722, C723, C726, C729
39K ~ 44.9K H L L
45K ~ 48.9K H L L
49K ~ 51.9K H L H
52K ~ 57.9K H L H
58K ~ 61.9K H H L
62K ~ 65.9K H H L
66K ~ 70K H H H
- 19 -
6. NO VERTICAL DEFLECTION
NO V-DEFLECTION
(ONE HORIZONTAL LINE)
CHECK NO
IC601 PIN 2 TROUBLE IN
(13V+)? D610 13V+ LINE
YES
CHECK NO TROUBLE IN
IC701 PIN 23? IC701
3V
YES
TROUBLE IN
IC601, V-CIRCUIT
- 20 -
7. TROUBLE IN OSD
NO OSD (ENTER BUTTON MUST BE PRESSED.)
CHECK NO TROUBLE IN
IC301 B+ 5V LINE
(5V) ?
DC 5V
YES
CHECK TROUBLE IN
IC301 PIN 5, 10 NO
IC601 PIN1 (V-FBP),
WAVEFORM? T701 40V LINE (H-FBP)
Pin 10
5V
Pin 5 YES
CHECK
IC301 PIN 12 NO TROUBLE IN
WAVEFORM ? IC302, IC301
H+V
5V
YES
CHECK NO TROUBLE IN
IC301 PIN 13, 14, 15 ? IC301, IC302
H+V
5V
YES
TROUBLE IN
OSD PERIPHERAL
CIRCUIT
- 21 -
8. TROUBLE IN DPM
OFF MODE FAILURE (NO OFF MODE.)
CHECK
IC401 (MICOM) NO CHECK PC,
INPUT H/V SYNC SIGNAL
PIN 30, 31 (H/V INPUT) (PC IS NOT GOING INTO
SIGNAL? DPM OFF MODE)
YES H/V SYNC
CHECK
IC401 PIN 13 NO TROUBLE IN
WAVEFORM? X401
5V
YES
24MHz
CHECK
NO (DPMF: 0V) TROUBLE IN
IC401 (MICOM)
IC401 (MICOM)
PIN 19, 27 ?
SEE DPM TABLE
YES
CHECK
B+ LINE NO TROUBLE IN
(6.3V,13V+, 105V) ? Q941, Q942, Q951, Q952,
YES DPM TABLE
Item DPMF DPMS LED
Mode
TROUBLE IN PC NORMAL H H GREEN
STAND-BY L H AMBER
SUSPEND L H AMBER
OFF L L AMBER
- 22 -
9. NO DEGAUSSING
NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.)
CHECK NO TROUBLE IN
IC401 PIN 1
IC401 (MICOM)
(0V)?
YES
CHECK
Q953 COLLECTOR NO TROUBLE IN
(15V) VOLTAGE? Q953
DC 15V
YES
CHECK NO TROUBLE IN
P902 ? P902
YES
CHECK NO TROUBLE IN
RL901? RL901
YES
TROUBLE IN
TH901,
DEGAUSSING COIL
- 23 -
10. NO TILT (NO ROTATION )
NO TILT (NO ROTATION)
CHECK
IC401 PIN21 NO TROUBLE IN
WAVE FORM ? IC401 (MICOM)
YES
CHECK
13V LINE NO TROUBLE IN
AND 6.3V LINE ? 15V LINE, 6.3V LINE
YES
CHECK
Q503 EMITTER NO TROUBLE IN
VOLTAGE ? Q501~Q503
YES
TROUBLE IN
P501, TILT COIL
- 24 -
EXPLODED VIEW
3
5
10
16
c
b
8
9
a
6
2
- 25 -
b
a
B
4
7
14
11
12
13
11
1 15
13
A
EXPLODED VIEW PARTS LIST
Ref. No. Part No. Description
3091TKC074F CABINET ASSEMBLY, FB770G BRAND 068 DI F700B For Europe, Israel, S.Africa, India
1
3091TKC074A CABINET ASSEMBLY, FB770G BRAND 068 For IOMG, USA, Russia
6318L17013A CDT(CIRC), M41QBF423X 41NPLD LG-PHILIPS 70KHZ 29.1MM FLATRON TCO- Northern hemisphere
2
6318L17013B CDT(CIRC), M41QBF423X 41QPLD LG-PHILIPS 70KHZ 29.1MM FLATRON TCO- Equatorial
3 3809TKC042A BACK COVER ASSEMBLY, 2ND FLATRON 3808TKC041A
3043TKK103B TILT SWIVEL ASSEMBLY, FB770H T060 B058 DI CKD For Europe, Israel, S.Africa, India
4
3043TKK103A TILT SWIVEL ASSEMBLY, FB770H T060 B058 For IOMG, USA, Russia
5 339-002H SCREW ASSY, PHP+5*20(FZMY)+GW18 NEW TYPE
6 6140TC2014B COIL,DEGAUSSING, - GET D-COIL,0.5*130TS,1410,WITH PURITY,FB770G
6871TST319C PWB(PCB) ASSEMBLY,SUB, FB770H CONTROL TOTAL BRAND LGEDI CKD For Europe, Israel, S.Africa, India
7 6871TST319D PWB(PCB) ASSEMBLY,SUB, FB770H CONTROL TOTAL IOMG CA-124 For IOMG
6871TST319B PWB(PCB) ASSEMBLY,SUB, FB770H CONTROL TOTAL BRAND LGENT For USA, Russia
8 6174T11004A FBT (FLY BACK TRANSFORMER), 1055A, CB777H LG-PHILIPS 17"/70KHZ FST
9 6620TKB002A SOCKET(CIRC),POWER BAE EUN AC UNIVERSAL 3PIN BLACK
10 6850TA9010A CABLE,D-SUB, UL2990-9C(5.8) AT 1560MM GRAY(85964) FB770H DM
11 4930TKK031C HOLDER, PCB FIX , PC+ABS
4950TKK368F METAL, SHIELD BOTTOM "E" CKD For Europe, Israel, S.Africa, India, IOMG
12
4950TKK368E METAL, SHIELD BOTTOM FB770H-NO PEMNUT For USA, Russia
13 4810TKK204C BRACKET, H-CHASSIS HOLDER FBT, A-CKD For Europe, Israel, S.Africa, India
14 4810TKK204A BRACKET, CB777H HOLDER FBT For IOMG, USA, Russia
15 4930TKK036A HOLDER, PCB FIX FB770G 2ND FLATRON
16 332-102E SCREW, PTP+4*16(MSWR/FZMY)
3313T17266C MAIN TOTAL ASSEMBLY, FB770H BRAND CA-124 For Europe, Israel, S.Africa, India
A 3313T17266D MAIN TOTAL ASSEMBLY, FB770H IOMG CA-124 For IOMG
3313T17266B MAIN TOTAL ASSEMBLY, FB770H BRAND CA-119 LGENT For USA, Russia
6871TMT327C PWB(PCB) ASSEMBLY,MAIN, FB770H KLEUED BRAND CA-124 TOTAL For Europe, Israel, S.Africa, India
B 6871TMT327D PWB(PCB) ASSEMBLY,MAIN, FB770H SLIOEI IOMG CA-124 TOTAL For IOMG
6871TMT327B PWB(PCB) ASSEMBLY,MAIN, FB770H KLRDET BRAND CA-119 TOTAL For USA, Russia
a 332-112F SCREW,DRAWING, D3.5 L10.0 MSWR/FZMY +SW3.5+RW3.5
b 4001TKK004E SCREW ASSEMBLY, TAPTITE P TYPE D3.0 L10.0 MSWR/FZMY SW3+RW10
c 332-095B SCREW,DRAWING, PZP+3*10(MSWR/FZMY)
- 26 -
REPLACEMENT PARTS LIST
CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS,
READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL.
* NOTE : S SAFETY Mark
AL ALTERNATIVE PARTS
DATE: 2002. 10 . 10. DATE: 2002. 10 . 10.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
CAPACITORS
C611 0CE477CF618 470UF SHL 16V M FL TP5
C201 0CN1040K949 0.1M 50V Z F TA52 C613 181-288Q MKT 100V 154JTR PHS26154
C301 0CK1040K945 0.1UF 50V Z F TR C614 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5
C302 0CK1040K945 0.1UF 50V Z F TR C615 0CQ4721N419 0.0047U 100V J POLY NI TP5
C303 0CK1040K945 0.1UF 50V Z F TR C617 0CK1040K945 0.1UF 50V Z F TR
C305 181-288C MKT 100V 224JTR PHS 26224 C618 0CK1040K945 0.1UF 50V Z F TR
C306 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C701 181-288B MKT 100V 104JTR PHS26104
C307 0CK1040K945 0.1UF 50V Z F TR C702 0CE476CK638 47UF SHL,SD 50V M FM5 TP 5
C308 0CK1040K945 0.1UF 50V Z F TR C703 0CK8210K515 820P 50V K B TS
C309 0CK1040K945 0.1UF 50V Z F TR C704 0CQ1031N419 0.01U 100V J POLY NI TP
C310 0CE106CF638 10UF SHL,SD 16V M FM5 TP 5 C705 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5
C311 0CK1040K945 0.1UF 50V Z F TR C706 0CE105CK638 1UF SHL,SD 50V 20% FM5 TP 5
C312 0CK1040K945 0.1UF 50V Z F TR C708 0CE227CH638 220UF SHL,SD 25V M FM5 TP 5
C313 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5 C709 0CE225CK638 2.2UF SHL,SD 50V M FM5 TP 5
C314 0CK1010K515 100PF 50V K B TR C710 181-288Q MKT 100V 154JTR PHS26154
C315 0CK10202515 1000PF D 2KV 10% TR B(Y5P) C711 181-288E MKT 100V 474JTR PHS 26474
C325 0CK1040K945 0.1UF 50V Z F TR C712 181-288B MKT 100V 104JTR PHS26104
C326 0CK4710W515 470P 500V K B TS C713 0CK2210K515 220P 50V K B TS
C327 0CK10302940 0.01M 2KV Z F S C714 0CE107CH638 100UF SHL,SD 25V M FM5 TP 5
C328 0CK10302945 0.01UF 2KV Z F TR C715 181-288N MKT 100V 103JTR PHS86103
C330 181-288E MKT 100V 474JTR PHS 26474 C717 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5
C331 0CC2200W415 22PF 500V J NP0 TR C719 0CZZTAB001F SHL-BP SYE / SWE 50V 3.3UF 20%
C332 0CK10301945 10000PF D 1KV Z F(Y5V) TR C722 181-303D 184J 30.0*18.5*11.0*20.0 250V
C346 0CE475CP638 4.7UF SHL,SD 160V M FM5 TP 5 C723 181-305A MPP 250V 104J S=10.0
C380 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C724 0CK1040K945 0.1UF 50V Z F TR
C383 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5 C725 0CK6810W515 680P 500V K B TS
C389 0CE475CP638 4.7UF SHL,SD 160V M FM5 TP 5 C726 181-305Y MPP 250 204J S=10.0
C390 0CK10301945 10000PF D 1KV Z F(Y5V) TR C727 0CN1040K949 0.1M 50V Z F TA52
C394 0CN1520F569 1500P 16V K X TA52 C728 0CQ5621N419 5600P 100V J POLY NI TP
C395 0CK1520K515 1500P 50V K B TS C729 181-305V 514J 26.0*18.0*11.0*15.0 250V
C396 0CK1520K515 1500P 50V K B TS C730 0CN1040K949 0.1M 50V Z F TA52
C397 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C731 0CBZTBU004D 542J 29.0*20.5*9.5*20.0 2.5KV
C401 0CK1040K945 0.1UF 50V Z F TR C732 181-288N MKT 100V 103JTR PHS86103
C402 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5 C733 0CBZTBU003J 392J 20.0*12.5*7.5*10.0 800V J
C403 0CK1040K945 0.1UF 50V Z F TR C734 0CE2266F618 22M SMS 16V M FM5 TP(5)
C406 0CK1010K515 100PF 50V K B TR C736 0CQ4721N419 0.0047U 100V J POLY NI TP5
C407 0CK1010K515 100PF 50V K B TR C737 0CK10102515 100PF D 2KV 10% B(Y5P) TR
C408 0CK1040K945 0.1UF 50V Z F TR C738 181-302V 393J 19.5*14.0*8.0*10.0 250V J
C409 0CK1010K515 100PF 50V K B TR C739 0CE106EK638 10UF KMG 50V M FM5 TP 5
C410 0CK1010K515 100PF 50V K B TR C740 0CE337CL618 330UF SHL 63V M FL TP5
C416 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5 C741 0CZZTFT002B ECQV1H154JZ3 154J 50V TP5.0 MA
C501 0CE106CF638 10UF SHL,SD 16V M FM5 TP 5 C742 181-288K MKT 100V 683JTR PHS26683
C510 0CE225CK638 2.2UF SHL,SD 50V M FM5 TP 5 C743 0CE334CK638 0.33UF SHL,SD 50V 20% TP 5 FM5
C511 0CE106CF638 10UF SHL,SD 16V M FM5 TP 5 C744 181-305L 684J 26.0*19.0*12.5*15.0 250V
C599 0CE225CK638 2.2UF SHL,SD 50V M FM5 TP 5 C745 0CK5610W515 560P 500V K B TS
C601 0CE477CF618 470UF SHL 16V M FL TP5 C746 0CK3310W515 330P 500V K B TS
C603 0CE227CK618 220U SHL 50V M FL TP5 C747 181-288D MKT 100V 473JTR PHS26473
C605 181-288T MKT 100V 223KTR PHS85223 C748 0CK1510W515 150PF 500V K B TR
C606 0CQ4721N419 0.0047U 100V J POLY NI TP5 C749 0CE106CQ618 10UF SHL 200V M FL TP5
- 27 -
DATE: 2002. 10. 10. DATE: 2002. 10. 10.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
C750 0CK1040K945 0.1UF 50V Z F TR D310 0DS124409AA 1SS244 TP ROHM KOREA
C751 181-288J MKT 100V 563JTR PHS26563 D311 0DS124409AA 1SS244 TP ROHM KOREA
C752 0CQ4721N419 0.0047U 100V J POLY NI TP5 D312 0DS124409AA 1SS244 TP ROHM KOREA
C753 0CQ1021N419 1000P 100V J POLY NI TP D313 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C754 0CC4700W405 47PF 500V J SL TP D399 0DR140059DA 1N4005TB52 TP LITEON DO41 600V
C759 0CQ1821N419 1800P 100V J POLY NI TP D402 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C767 0CK10301945 10000PF D 1KV Z F(Y5V) TR D404 971-0016 TIN HDC 0.60H
C771 0CK10301945 10000PF D 1KV Z F(Y5V) TR D501 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C781 0CK1030K945 0.01UF 50V Z F TR D511 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C801 0CK1040K945 0.1UF 50V Z F TR D512 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C802 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D602 0DRGF00069A SB140 GULF TP DO41 40V 1A 40A
C805 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D610 0DR100009CD RGP10G-1021 TIWAN SEMI TP DO41
C810 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D610 0DR100009CD RGP10G-1021 TIWAN SEMI TP DO41
C821 0CK1040K945 0.1UF 50V Z F TR D701 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C822 0CN1040K949 0.1M 50V Z F TA52 D702 0DS124409AA 1SS244 TP ROHM KOREA
C830 0CK10102515 100PF D 2KV 10% B(Y5P) TR D703 0DRTW00050A MUR460L-1121 TIWAN SEMI BK DO2
C901 0CBZTBU002A BULK PCX2 335 224K D704 0DR150001AA DTV1500MFP ST SGS-THOMSON TO22
C902 0CBZTBU002A BULK PCX2 335 224K D705 0DRGF00069A SB140 GULF TP DO41 40V 1A 40A
C903 0CZZTCB003D BULK 7.5 CS E 102M 8.0 250V TD D706 0DRGF00110A GRD07-15GP GULF BK DO201AD 150
C904 0CKZTTA003A SC E 222M 10.0FF7 250V TP7.5 S D709 971-0016 TIN HDC 0.60H
C905 0CKZTTA003A SC E 222M 10.0FF7 250V TP7.5 S D710 0DR400409AC UF4004 GULF TP DO41 400V 1A 30
C906 0CZZTCB003D BULK 7.5 CS E 102M 8.0 250V TD D711 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C907 0CZZTCB003C BULK 7.5 CS E 472M 14.5 250V T D712 0DR100009CD RGP10G-1021 TIWAN SEMI TP DO41
C908 181-124R 220UF SMG(25.4*40) 400V M VNSN D712