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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-110
FACTORY MODEL: CQ771G
MODEL: S7500 (PE1165T), S7500 (PE1165),
MV7500 (PE1165U), MV7500 (PE1165),
CV7500 (PE1165U)
*( ) ID LABEL Model No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
SPECIFICATIONS ................................................... 2 ADJUSTMENT ...................................................... 10
SAFETY PRECAUTIONS ........................................ 3 TROUBLESHOOTING GUIDE .............................. 12
TIMING CHART ....................................................... 4 EXPLODED VIEW................................................... 22
REPLACEMENT PARTS LIST ............................... 24
OPERATING INSTRUCTIONS ................................ 5
PIN CONFIGURATION........................................... 29
WIRING DIAGRAM ................................................. 6 PACKING AND ACCESSORIES ............................ 31
BLOCK DIAGRAM ................................................... 7 SCHEMATIC DIAGRAM ......................................... 32
DESCRIPTION OF BLOCK DIAGRAM................... ..8 PRINTED CIRCUIT BOARD................................... 34




SPECIFICATIONS
1. PICTURE TUBE 3-2. Power Consumption
Size : 17 inch
MODE POWER CONSUMPTION LED COLOR
DefIection Angle : 90
Neck Diameter : 29.1 mm FULL POWER less than 100 W GREEN
Dot Pitch : 0.28 mm STAND-BY less than 5 W AMBER
Face Treatment : Anti-Glare
SUSPEND less than 5 W AMBER
Diagonal Inch : 16.06"
POWER OFF less than 5 W OFF
2. SIGNAL
2-1. Horizontal & Vertical Sync 4. DISPLAY AREA
1) Input Voltage Level : Low=0~1.2V, High=2.5~5.5V 4-1. Active Video Area :
2) Sync Polarity : Positive or Negative Max Image Size - 326.7 x 245.5 mm (12.86" x 9.67")
Preset Image Size - 312 x 234 mm (12.28" x 9.21")
2-2. Video Input Signal 4-2. Display Color : Full Colors
1) Voltage Level : 0 ~ 0.7 Vp-p 4-3. Display Resolution : 1280 x 1024 / 60Hz
a) Color 0, 0 : 0 Vp-p (Non-Interlace)
b) Color 7, 0 : 0.467 Vp-p 4-4. Video Bandwidth : 110 MHz
c) Color 15, 0 : 0.7 Vp-p
2) Input Impedance : 75 5. ENVIRONMENT
3) Video Color : R, G, B Analog 5-1. Operating Temperature: 10C ~ 35C (50F ~ 95F)
4) Signal Format : Refer to the Timing Chart (Ambient)
5-2. Relative Humidity : 8%~ 80%
2-3. Signal Connector (Non-condensing)
3 row 15-pin Connector (Attached) 5-3. Altitude : 5,000 m

2-4. Scanning Frequency 6. DIMENSIONS (with TILT/SWIVEL)
Horizontal : 30 ~ 70 kHz Width : 404.0 mm (15.90 inch)
Vertical : 50 ~ 140 Hz Depth : 438.5 mm (17.26 inch)
Height : 426.0 mm (16.77 inch)

3. POWER SUPPLY 7. WEIGHT (with TILT/SWIVEL)
3-1. Power Range Net Weight : 15.1 kg (33.29 lbs.)
AC 100~240V , 50/60Hz, 2.0A Gross Weight : 17.8 kg (39.24 lbs.)




-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 25.5kV. 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
B A


C E
F
D
SYNC




<< Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (s), Vertical etc... (ms) >>

Mode H/V Sync Total Period Video Active Blanking Time Sync Duration Back Porch Front Porch Resolution
Sort Polarity Frequency (E) Time (A) (B) (D) (F) (C)
H 37.500 26.667 20.317 6.349 2.032 3.810 0.508 640x480
1
V 75.000 13.333 12.800 0.533 0.080 0.427 0.027 75Hz
H 31.469 31.778 25.422 6.356 3.813 1.907 0.636 640x480
2
V 59.940 16.683 15.253 1.430 0.064 1.048 0.318 60Hz
H 43.269 23.112 17.778 5.334 1.556 2.222 1.556 640x480
3
V 85.008 11.764 11.093 0.671 0.069 0.579 0.023 85Hz
H 31.470 31.778 25.422 6.356 3.813 1.907 0.636 720x400
4
V + 70.080 14.269 12.711 1.558 0.064 1.080 0.414 70Hz
H + 46.880 21.330 16.160 5.170 1.620 3.230 0.320 800x600
5
V + 75.010 13.331 12.798 0.533 0.064 0.448 0.021 75Hz
H + 53.674 18.631 14.222 4.409 1.138 2.702 0.569 800x600
6
V + 85.061 11.756 11.178 0.578 0.056 0.503 0.019 85Hz
H + 60.023 16.660 13.003 3.657 1.219 2.235 0.203 1024x768
7
V + 75.029 13.328 12.795 0.533 0.050 0.466 0.017 75Hz
H + 68.677 14.561 10.836 3.725 1.061 2.201 0.508 1024x768
8
V + 84.997 11.765 11.183 0.582 0.044 0.523 0.015 85Hz
H + 63.98 15.63 11.85 3.78 1.04 2.30 0.44 1280x1024
9
V + 60.02 16.661 16.005 0.656 0.047 0.594 0.015 60Hz




-4-
OPERATING INSTRUCTIONS

FRONT VIEW REAR VIEW




Power ON/OFF Button AC Power Socket Signal Connector
See Front Control Panel




Front Control Panel




4 3 2 1


1. Power/LED 4. Select
Controls power to the monitor. Launches on-screen displays, selects functions and
The LED on the power button is illuminated when the adjustments, and exits menus and On-Screen Display.
power is on.
5. Hot Key
2. Right Adjustment Left Adjustment
Moves clockwise through menu options or increases Just select left adjustment key without OSD display.
adjustment levels. Contrast menu display.

3. Left Adjustment Right adjuatment
Moves counter-clockwise through menu options or Just select right adjustment key with OSD display.
decreases adjustment levels. Brightness menu display.




-5-
WIRING DIAGRAM




P201



P402

P405




P501
P702




S
P701


S+
FBT




T1
AC
Socket P902



Signal
Cable




P302 P301




P303




-6-
< OSD Control >
80V H.V
Heater ( 6.3V )
Colore alTM Signal
MENU + POWER H-Sync Sig R
Cable VIDEO
V-Sync Sig G VIDEO
PRE-AMP DY CDT
B MAIN AMP
I2C DATA(SDA) (IC302)
CONTRAST (IC303)
I2C CLOCK(SCL) LM1269
BRIGHTNESS LM2467
H POSITION



G1
H SIZE OSD IC
MICOM 5V 15V
V POSITION 5V (IC301) I2C
(IC401) SCL / SDA
V SIZE NT6872 CUT OFF IC
5V H/V Sync,
Screen(G2)
SPCC R/G/B
PWM Control Drive/Contrast (IC304)
TRAPEZOID I2C
PIN BALANCE Cut-Off LM2480
PARALLELOGRAM
Static Focus




ROTATION 15V
Dynamic Focus




DEGAUSS
COLOR TEMPERADURE X-RAY
FACTORY RECALL 15V Protection
EXIT
Vertical Blanking,
Circuit
E2PROM I2C Brightness Control
(IC402)




-7-
6.3V 15V
H/V Sync Processor - 160V
TILT 15V ( IC701 ) Vout 1
Control TDA4857 V-OUT




TILT
COIL
I2C Vout 2 40V
Circuit ( IC601)
TDA4866
H/V
BLOCK DIAGRAM




Degaussing
Circuit 15V Sync FBT
80V ( T701 )




COIL
50V H-OUT
SMPS ( Q706)




DEGAUSSING
15V H-DRV B+
TRANS 15V
(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 CONTROL Circuit
(IC901) CIRCUIT 50V
POWER INPUT
100~240VAC
D/D Feed Back
(50/60Hz)
DESCRIPTION OF BLOCK DIAGRAM

1. Line Filter & Associated Circuit. 3) The Micom sets operating mode and offers the
This is used for suppressing noise of power input line controlled data. (H-size, H-position, V-size, ... etc.)
flowing into the monitor and/or some noise generated in 4) The controlled data of each mode is stored in itself.
this monitor flowing out through the power input line. 5) User can adjust screen condition by each OSD
That is to say, this circuit prevents interference between function. The data of the adjusted condition is stored
the monitor and other electric appliances. in EEPROM(IC402).

2. Degauss Circuit & Coil. 7. Horizontal and Vertical Synchronous Processor.
The degauss circuit consists of the degaussing coil, the This circuit generates the horizontal drive pulse and the
PTC(Positive Temperature Coefficient) thermistor(TH901), vertical drive pulse by taking sync-signal from the Signal-
and the relay(RL901). This circuit eliminates abnormal Cable. This circuit consists of the TDA4857(IC701) and
color of the screen automatically by degaussing the the associated circuit.
shadow mask in the CRT during turning on the power
switch. When you need to degauss in using the monitor, 8. D/D(DC to DC) Converter.
select DEGAUSS on the OSD menu. This circuit supplies DC voltage to the horizontal deflection
output circuit by increasing DC 50V which is the
3. SMPS(Switching Mode Power Supply). secondary voltage of the SMPS in accordance with the
This circuit is working of 90~264V AC(50/60Hz). input horizontal sync signal.
The operation procedure is as follows:
1) AC input voltage is rectified and smoothed by the bridge 9. Side-Pincushion & Trapezoid Correction Cirucit.
diodes (D900) and the capacitor (C908). This circuit improves the side-pincushion and the
2) The rectified voltage(DC) is applied to the primary coil trapezoid distortion of the screen by mixing parabola and
of the transformer(T901). saw-tooth wave to output of the horizontal deflection D/D
3) The control IC(IC901) generates switching pulse to turn converter which is used for the supply voltage(B + ) of the
on and off the primary coil of the transformer (T901) deflection circuit.
repeatedly.
4) Depending on turn ratio of the transformer, the 10. Horizontal Deflection Output Circuit.
secondary voltages appear at the secondary coils of the This circuit makes the horizontal deflection by supplying
transformer(T901). the saw-tooth current to the horizontal deflection yoke.
5) These secondary voltages are rectified by each
diode(D941, D942, D951, D961, D962, D971) and operate 11. High Voltage Output & FBT(Flyback Transformer).
other circuit. (horizontal and vertical deflection, video The high voltage output circuit is used for generating pulse
amplifier, ...etc.) wave to the primary coil of the FBT(Flyback Transformer) .
A boosted voltage(about 25.5KV) appears at the
4. Display Power Management Circuit. secondary of the FBT and it is supplied to the anode of the
This circuit control power consumption of the monitor by CDT. And there are another output voltages such as the
detecting H and V sync signal. There are off mode. When no dynamic focus and the screen voltage(G2).
horizontal or vertical sync signal input, the circuit consists of
Q941 and Q951 becomes off mode. It's power consumption 12. H-Linearity Correction Circuit.
is below 5W. This circuit corrects the horizontal linearity for each
horizontal sync frequency.
5. X-ray Protection.
If the high voltage of the FBT reaches up to 29kV (abnormal 13. Vertical Output Circuit.
state), IC401(MICOM) pin 35 Sensing from FBT directly. This circuit takes the vertical ramp wave from the
Then MICOM control IC701 (Deflection controller) to stop TDA4857(IC701) and performs the vertical deflection by
Horizontal drive pulse and stop Horizontal Deflection. supplying the saw-tooth current from the TDA4866(IC601)
to the vertical deflection yoke.
6. Micom(Microprocessor) Circuit.
The operating procedure of Micom(Microprocessor) and 14. Dynamic Focus Output Circuit.
its associated circuit is as follows: This circuit takes the horizontal and the vertical parabola
1) H and V sync signal is supplied from the signal cable. waves from the TDA4857(IC701) and amplifies it to
2) The Micom(IC401) distinguishes polarity and maintain constant focus on center and corners in the
screen.
frequency of H and V sync.



-8-
15. H & V Blanking and Brightness Control. 18. Video Pre-Amp Circuit.
Blanking circuit eliminates retrace line by supplying This circuit amplifies the analog video signal from 0-0.7V
negative pulse to the G1 of the CRT. And Brightness to 0-4V. It is operated by taking the clamp, R, G, B drive
circuit is used for control of the screen brightness. and contrast signal from the Micom(IC401).
16. Image Rotation (Tilt) Circuit.
19. 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.
17. OSD Circuit
This circuit is used for performing the OSD(On-Screen-
Display) function.
When a user selects the OSD Select/Adjustment control,
the adjustment status displays on the screen.




-9-
ADJUSTMENT
GENERAL INFORMATION
All adjustment are thoroughly checked and corrected 7) Adjust tilt as arrow keys to be the best condition.
when the monitor leaves the factory, but sometimes 8) DIST. ADJ. BALANCE command.
several adjustments may be required. 9) Adjust parallelogram as arrow keys to be the best
Adjustment should be following procedure and after condition.
warming up for a minimum of 30 minutes. 10) Adjust balance of pin-balance as arrow keys to be
the best condition.
Alignment appliances and tools. 11) DIST. ADJ. FOS. ADJ command.
- IBM compatible PC. 12) Adjust V-SIZE as arrow keys to 2342mm.
- Programmable Signal Generator.
13) Adjust V-POSITION as arrow keys to center of the
(eg. VG-819 made by Astrodesign Co.)
screen.
- EPROM or EEPROM with saved each mode data.
- Alignment Adaptor and Software. 14) Adjust H-SIZE as arrow keys to 3122mm.
- Digital Voltmeter. 15) Adjust H-POSITION as arrow keys to center of the
- White Balance Meter. screen.
- Luminance Meter. 16) Adjust S-PCC (Side-Pincushion) as arrow keys to be
- High-voltage Meter. the best condition.
17) Adjust TRAPEZOID as arrow keys to be the best
AUTOMATIC AND MANUAL DEGAUSSING condition.
The degaussing coil is mounted around the CDT so that 18) Save of the Mode 1.
automatic degaussing when turn on the monitor. But a 19) Display from Mode 1 to 8 and repeat above from
monitor is moved or faced in a different direction, become number 12) to 19)
poor color purity cause of CDT magnetized, then press 20) PRESET EXIT Y (Yes) command.
DEGAUSS on the OSD menu.
4. Adjustment for White Balance and Luminance.
ADJUSTMENT PROCEDURE & METHOD 1) Set the White Balance Meter.
- Install the cable for adjustment such as Figure 1and run 2) Press the DEGAUSS on the OSD menu for
the alignment program on the DOS for IBM compatible PC. demagnetization of the CDT.
- Set external Brightness and Contrast volume to max position.
3) COLOR ADJ. LUMINANCE command of the
alignment program.
1. Adjustment for B+ Voltage.
4) Set Brightness and Contrast to Max position.
1) Display cross hatch pattern at Mode 8.
5) Display color 0,0 pattern at Mode 8.
2) Check C999 (+) voltage to 50 0.5Vdc.
6) COLOR ADJ. BIAS ADJ. COLOR No. 1
command of the alignment program.
2. Adjustment for High-Voltage.
7) Check whether green color or not at R-BIAS and G-
1) Display cross hatch pattern at Mode 8.
BIAS to min position and B-BIAS to 127(7F) and
2) DIST.ADJCTRL PWM High Voltage Command.
Sub-Brightness to 177(B1) position. Adjust G2
3) Adjust High Voltage to 25.5kV0.3 kVdc.
(screen) command to 0.4 0.05FL of the raster
4) Press Enter Key.
luminance.
3. 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 CQ771G on the IBM Meter with PC arrow keys.
compatible PC. 9) Adjust SUB-Brightness command to 0.50.1FL 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 8.
5) COMMANDPRESET STARTY(Yes) command. 13) DRIVE ADJ. No 1. command.
6) DIST. ADJ. CTRL PWM TILT command.


- 10 -
14) Set Brightness is cut-off(0.06FL) and Contrast to 5. Input EDID Data.
Max position. 1) Display color 15,0 cross hatch pattern at Mode 8.
15) Set SUB-CONTRAST Max 127(7F) (decimal) position. 2) EEPROM Write EDID command and confirm
16) Set B-DRIVE to 90(5A); LG CDT at DRIVE of the "EDID Write OK!!" message of monitor.
alignment program. (TECO CDT: B-DRIVE 100(64)) 3) Exit from the alignment program.
4) Power switch OFF/ON for EDID data save.
17-1) Adjust R-DRIVE and G-DRIVE command to white
balance x=0.2830.003 and y=0.2980.003 at Full-
6. Adjustment for Focus.
White on the White Balance Meter with PC arrow keys.
1) Set the Brightness and Contrast to max position.
17-2) Display color 15,0 window pattern 5Box 50x50mm at 2) Display cross hatch with quadrant text pattern in full
mode 8. screen at Mode 8.
18) Adjust SUB-CONTRAST command to 501FL at 3) Adjust two Focus control on the FBT that focus
B/Raster 0.06FL. should be the best condition.
19) Display color 15,0 full white patten at Mode 8.
20) Set Brightness and Contrast to Max position.
21) COLOR ADJ. LUMINANCE ABL command.
22) Adjust ABL to 331FL of the luminance at B/Raster 0.06FL.
23) After push the "ENTER" key, and "COMMAND
PRESET EXIT Y(Yes)" command.
24) Exit from the program.




- 11 -
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
IC901 PIN 6
WAVEFORM NO TROUBLE IN
(SQUARE WAVE IC901
COMES OUT?)



YES



CHECK
NO TROUBLE IN
D941, D942, D951, D961,
D941, D942, D951,
D962, D971
D961, D962, D971
VOLTAGE?



YES


TROUBLE IN
Q903, Q952,
Q951, Q942, Q941




- 12 -
2. NO CHARACTER


NO CHARACTER




CHECK
NO TROUBLE IN
IC302
P302 5V LINE
PIN 9(5V) ?


YES



CHECK TROUBLE IN
NO
IC302 PIN 5, 6, 7? PC SIGNAL,
P301 SIGNAL CABLE


YES



CHECK NO TROUBLE IN
IC302 PIN 20, 19, 18 ? IC302



YES


CHECK
NO TROUBLE IN
IC303 PIN 4 (80V)
P303 12V LINE/
PIN 8 (12V) ?
80V LINE

YES


CHECK
IC303 NO TROUBLE IN IC303
PIN 1, 2, 3 ?


YES


CHECK TROUBLE IN
NO R341~R343,
R, G, B CATHODE
VOLTAGE? R331~R333, L311~L313,
D307~D312

YES

TROUBLE IN
CRT SOCKET



- 13 -
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
(-157V)?



YES




CHECK NO TROUBLE IN
G1 VOLTAGE? Q799
(-55V~-150V)



YES




CHECK NO TROUBLE IN
CDT HEAT
D941, Q942, Q941
VOLTAGE? (6.3V)



YES


TROUBLE IN
CDT




- 14 -
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, Q720, D710
69KHZ 140V) ?


YES



CHECK
NO TROUBLE IN
Q701 COLLECTOR
Q701
WAVEFORM?


YES
0V
T



TROUBLE IN
T701, P701




- 15 -
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



Cs SIGNAL TABLE
YES
HORIZONTAL
FREQUENCY(fH) Cs1 Cs2 Cs3 Cs0

30K ~ 33.9K L L L 255
34K ~ 38.9K L H L 155
TROUBLE IN
39K ~ 43.9K H L L 130
C722, C723, C726, C729
44K ~ 47.9K H L H 100
48K ~ 51.9K H L H 85
52K ~ 57.9K H H L 70
58K ~ 61.9K H H L 60
62K ~ 65.9K H H H 60
66K ~ 70K H H H 30




- 16 -
6. NO VERTICAL DEFLECTION



NO V-DEFLECTION
(ONE HORIZONTAL LINE)




CHECK NO
IC601 PIN 3 TROUBLE IN
(15V)? R603 15V LINE




YES




TROUBLE IN
CHECK NO HIGH-VOLTAGE OUT
IC601 PIN 7
CIRCUIT(FBT),
(40V)?
D721, R606



YES




CHECK NO TROUBLE IN
IC701 PIN 12, 13? IC701


3V


YES



TROUBLE IN
IC601, V-CIRCUIT




- 17 -
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 PIN8 (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




- 18 -
8. TROUBLE IN DPM



OFF MODE FAILURE (NO OFF MODE.)




CHECK
IC401 (MICOM) NO CHECK PC,
INPUT H/V SYNC SIGNAL
PIN 31, 32 (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 2, 3 ?

SEE DPM TABLE
YES


CHECK
B+ LINE NO TROUBLE IN
(6.3V,15V, 80V) ? Q941, Q942, Q951, Q952,




YES
DPM TABLE

Item DPMF LED
TROUBLE IN PC Mode
NORMAL H GREEN

STAND-BY L AMBER

SUSPEND L AMBER

OFF L AMBER




- 19 -
9. NO DEGAUSSING



NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.)




CHECK NO TROUBLE IN
IC401 PIN 19
IC401 (MICOM)
(0V)?



YES



CHECK
NO TROUBLE IN
Q953 COLLECTOR
Q953
VOLTAGE?

DC 15V
YES




CHECK NO TROUBLE IN
P902 ? P902



YES




CHECK NO TROUBLE IN
RL901? RL901



YES


TROUBLE IN
TH901,
DEGAUSSING COIL




- 20 -
10. NO TILT (NO ROTATION )




NO TILT (NO ROTATION)




CHECK
IC401 PIN21 NO TROUBLE IN
WAVE FORM ? IC401 (MICOM)




YES



CHECK
15V 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, D521




- 21 -
EXPLODED VIEW




5
3




9
7
6
8




- 22 -
2




B
A
4

10
11
12



13
1
11
EXPLODED VIEW PARTS LIST

Ref. No. Part No. Description

3091TKC078A CABINET ASSEMBLY, CQ771G COMPAQ C072 TCO99 S7500 (PE1165T)
1
3091TKC078B CABINET ASSEMBLY, CQ771G COMPAQ 072 MPR-II S7500(PE1165), CV7500(PE1165U), MV7500(PE1165U, PE1165)

6318L17006A CDT(CIRC), M41LFQ803X 55NLUD LG-PHILIPS 70KHZ 29.1MM FST TCO S7500 (PE1165T); Northern Hemisphere

6318E17002A CDT(CIRC), M41LRS102XX112 (Z) TECO 70KHZ 29.1MM FST MPR-II S7500 (PE1165); Northern Hemisphere

6318E17002B CDT(CIRC), M41LRS102XX112 (EZ) TECO 70KHZ 29.1MM FST TCO S7500 (PE1165T); Northern Hemisphere

6318E17002C CDT(CIRC), M41LRS102XX112 (NS)(Z) TECO 70KHZ 29.1MM CV7500, MV7500(PE1165U); Northern Hemisphere

6318E17002D CDT(CIRC), M41LRS102XX112 (QZ) TECO 70KHZ 29.1MM FST MPR-II S7500 (PE1165); Equatorial

2 6318E17002E CDT(CIRC), M41LRS102XX112 (NS)(QZ) TECO 70KHZ 29.1MM FST- MV7500(PE1165U); Equatorial

6318E17002F CDT(CIRC), M41LRS102XX112 (SZ) TECO 70KHZ 29.1MM FST MPR-II MV7500, S7500(PE1165); Southern Hemisphere

6318L17005A CDT(CIRC), M41LFQ803X55NLAA LG-PHILIPS 70KHZ 29.1MM FST MPR-II S7500(PE1165); Northern Hemisphere

6318L17005B CDT(CIRC), M41LFQ803X 55QLAA LG-PHILIPS 70KHZ 29.1MM FST MPR-II S7500(PE1165); Equatorial

6318L17005C CDT(CIRC), M41LFQ803X 55SLAA LG-PHILIPS 70KHZ 29.1MM FST MPR-II S7500, MV7500(PE1165); Southern Hemisphere

6318L17007A CDT(CIRC), M41LFQ503X 55NLLD LG-PHILIPS 70KHZ 29.1MM FST CV7500, MV7500(PE1165U); Northern Hemisphere

6318L17007B CDT(CIRC), M41LFQ503X 55QLLD LG-PHILIPS 70KHZ 29.1MM FST MV7500(PE1165U);Equatorial

3809TKC044A BACK COVER ASSEMBLY, CQ771G C043 TCO99 COMPAQ S7500 (PE1165T)
3
3809TKC044B BACK COVER ASSEMBLY, CQ771G C043 MPR-II COMPAQ S7500(PE1165), CV7500(PE1165U), MV7500(PE1165U, PE1165)

4 3043TKK093C TILT SWIVEL ASSEMBLY, CQ771G T062 B054 HF350U

5 339-002K SCREW ASSEMBLY, TAPTITE P TYPE D5.0 L25.0 MSWR/FZMY

6 6140TC3004A COIL,DEGAUSSING, 1090MM 16.5OHM 0.4MM 110T 17" WITH EARTH

7 6174T11003E FBT (FLY BACK TRANSFORMER), 1054A,CB777G LG-PHILIPS 17" T701

8 6620TKB002B SOCKET(CIRC),POWER, SA-4S HUA JIE AC UNIVERSAL 3PIN BLACK SC901

9 6850TA9004C CABLE,D-SUB, UL 2990-9C(7.5) AT 1870MM COMPAQ BK EQ770G DM

10 4950TKS196A METAL, FRAME BOTTOM CQ77XG

11 4810TKK195A BRACKET, CQ77XG SUPPORTER CDT

12 6871TST292B PWB(PCB) ASSEMBLY,SUB, CQ771G(NT) CONTROL TOTAL COMPAQ CA-110

13 6401TZZ022B SPEAKER ASSEMBLY, CQ771G FOR COMPAQ(259139-001) SPK ASSY(L/R) BLACK MV7500(PE1165U)

3313T17258B MAIN TOTAL ASSEMBLY, CQ771G(NT,LG) COMPAQ CA-110 LG-PHILIPS CDT
A
3313T17258D MAIN TOTAL ASSEMBLY, CQ771G(NT,TECO) COMPAQ CA-110 TECO CDT

6871TMT300B PWB(PCB) ASSEMBLY,MAIN, CQ771G(NT) KXLGMT(LG) COMPAQ CA-110 TOTAL LG-PHILIPS CDT
B
6871TMT300D PWB(PCB) ASSEMBLY,MAIN, CQ771G(NT) KXLBNT(TECO) COMPAQ CA-110 TOTAL TECO CDT


- 23 -
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. 04. 15. DATE: 2002. 04. 15.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
CAPACITORS
C372 0CK1040K945 0.1UF 50V Z F TR
C201 0CN1040K949 0.1M 50V Z F TA52 C401 0CN1040K949 0.1M 50V Z F TA52
C301 181-288N MKT 100V 103JTR PHS86103 C402 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5
C302 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C403 0CK1040K945 0.1UF 50V Z F TR
C303 0CK1040K945 0.1UF 50V Z F TR C404 0CC1800K415 18P 50V J NPO TP
C304 181-288N MKT 100V 103JTR PHS86103 C405 0CC1800K415 18P 50V J NPO TP
C305 0CE107CF638 100UF SHL,SD 16V M FM5 TP 5 C406 0CK1010K515 100PF 50V K B TR
C306 181-288N MKT 100V 103JTR PHS86103 C407 0CK1010K515 100PF 50V K B TR
C307 0CN5610K519 560P 50V K B TA52 C408 0CK1040K945 0.1UF 50V Z F TR
C308 0CN1040K949 0.1M 50V Z F TA52 C409 0CC5600K415 56P 50V J NP0 TP
C309 0CK1040K945 0.1UF 50V Z F TR C410 0CK1010K515 100PF 50V K B TR
C310 181-288B MKT 100V 104JTR PHS26104 C411 0CK1040K945 0.1UF 50V Z F TR
C311 0CK1040K945 0.1UF 50V Z F TR C412 0CK1040K945 0.1UF 50V Z F TR
C312 0CN1040K949 0.1M 50V Z F TA52 C413 0CK1040K945 0.1UF 50V Z F TR
C313 0CK1040K945 0.1UF 50V Z F TR C414 0CK1040K945 0.1UF 50V Z F TR
C314 0CC4700W405 47PF 500V J SL TP C501 0CE106CF638 10UF SHL,SD 16V M FM5 TP 5
C315 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5 C599 0CE225CK638 2.2UF SHL,SD 50V M FM5 TP 5
C316 0CK1010W515 100P 500V K B TS LPD CDT C601 0CE477EH618 470UF KMG 25V M FL TP 5
C316 0CK1020W515 1000P 500V K B TS TECO CDT C602 181-288B MKT 100V 104JTR PHS26104
C317 0CN1040K949 0.1M 50V Z F TA52 C603 0CE476CK638 47UF SHL,SD 50V M FM5 TP 5
C318 0CK1040K945 0.1UF 50V Z F TR C604 181-288T MKT 100V 223KTR PHS85223
C319 0CN1040K949 0.1M 50V Z F TA52 C605 0CK1020W515 1000P 500V K B TS
C320 0CK1040K945 0.1UF 50V Z F TR C701 0CQ5621N419 5600P 100V J POLY NI TP
C321 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5 C702 0CZZTFT001M ECQB1H103JM3 103J 50V TP5.0 MA
C322 0CN6810K519 680P 50V K B TA52 C703 0CZZTFT001Z ECQB1H104JM3 104J 50V TP5.0 MA
C323 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5 C704 0CQ8221N519 0.0082U 100V K POLY NI TP
C324 0CK1040K945 0.1UF 50V Z F TR C705 0CE476CF638 47UF SHL,SD 16V M FM5 TP 5
C325 181-288D MKT 100V 473JTR PHS26473 C706 0CZZTFT001Z ECQB1H104JM3 104J 50V TP5.0 MA
C326 0CE106CN638 10UF SHL,SD 100V M FM5 TP 5 C707 0CZZTFT002B ECQV1H154JZ3 154J 50V TP5.0 MA
C327 181-288B MKT 100V 104JTR PHS26104 C708 0CE227CH638 220UF SHL,SD 25V M FM5 TP 5
C328 0CE106CN638 10UF SHL,SD 100V M FM5 TP 5 C709 181-288P MKT 100V 153JTR PHS86153
C329 181-288B MKT 100V 104JTR PHS26104 C710 0CK1040K945 0.1UF 50V Z F TR
C330 181-288B MKT 100V 104JTR PHS26104 C711 0CQ5621N419 5600P 100V J POLY NI TP
C331 181-288G MKT 100V 334JTR PHS26334 C712 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP 5
C332 181-288G MKT 100V 334JTR PHS26334 C713 0CQ1031N419 0.01U 100V J POLY NI TP
C333 181-288G MKT 100V 334JTR PHS26334 C716 0CK2710K515 270P 50V K B TS
C334 181-288B MKT 100V 104JTR PHS26104 C717 0CE105CN638 1UF SHL,SD 100V M FM5 TP 5
C335 181-288B MKT 100V 104JTR PHS26104 C718 181-288D MKT 100V 473JTR PHS26473
C336 181-288E MKT 100V 474JTR PHS 26474 C719 0CZZTAB001A SM-BP(P)/BP 10UF 50V 13*25 BK5
C337 0CK5610K515 560P 50V K B TS C720 0CK22101515 220P 1KV K B TP5
C338 0CK10302940 0.01M 2KV Z F S C721 181-477M 822J 19.5*12.0*7.0*7.5 250V J
C339 0CK4710W515 470P 500V K B TS C722 181-303G 334J 31.0*22.0*15.0*20.0 250V
C340 0CK1040K945 0.1UF 50V Z F TR C723 181-305C 154J 19.0*14.0*8.0*10.0 250V J LPD CDT
C341 0CK10302940 0.01M 2KV Z F S C723 181-305E MPP 250V 224J S=10.0 TECO CDT
C342 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 C724 0CN1040K949 0.1M 50V Z F TA52
C343 0CC1000W105 10PF 500V D SL TR C726 181-482H 364J 18.0*19.0*12.0*7.5 250V J
C346 0CK10302940 0.01M 2KV Z F S C727 0CN1040K949 0.1M 50V Z F TA52
C351 0CC0400K115 4P 50V D NP0 TS C728 0CQ5621N419 5600P 100V J POLY NI TP
C352 0CC0400K115 4P 50V D NP0 TS C729 181-305L 684J 26.0*19.0*12.5*15.0 250V
C353 0CC0400K115 4P 50V D NP0 TS C730 0CN1040K949 0.1M 50V Z F TA52
C354 0CC0400K115 4P 50V D NP0 TS C731 0CBZTBU004H 5600PF D 2.5KV H M/PP NI FM20 LPD CDT
C355 0CC0400K115 4P 50V D NP0 TS C731 0CBZTBU004G 622J 29.0*21.0*10.0*20.0 2.5KV TECO CDT
C356 0CC0400K115 4P 50V D NP0 TS C732 0CQ1031N419 0.01U 100V J POLY NI TP
C358 0CK8210K515 820P 50V K B TS C733 0CBZTBU003H 362J 20.0*12.0*7.0*10.0 800V J



- 24 -
DATE: 2002. 04. 15. DATE: 2002. 04. 15.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
DIODEs
C737 0CKZTTA002N 100PF K 2KV R TP5.0
C738 0CKZTTA003D SC SAMWHA 250V 1000F M TAPING D201 0DL305029BA LTL-305DJ-0C2 TP LITEON GREEN/
C739 0CE226CK638 22UF SHL,SD 50V M FM5 TP 5 D301 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C740 0CE227EL630 220UF KMG 63V M FM5 BULK D302 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C741 0CZZTFT002B ECQV1H154JZ3 154J 50V TP5.0 MA D303 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C742 0CZZTFT001R ECQB1H223JM3 223J 50V TP5.0 MA D304 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C743 0CK3310W515 330P 500V K B TS D305 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C744 0CE107CP630 100UF SHL 160V M FM5 BULK D306 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C745 0CK5610W515 560P 500V K B TS D307 0DS124409AA 1SS244 TP ROHM KOREA
C746 0CK33101515 330P 1KV K B TS D308 0DS124409AA 1SS244 TP ROHM KOREA
C747 0CK3320W515 3300P 500V K B TS D309 0DS124409AA 1SS244 TP ROHM KOREA
C748 0CZZTFT002B ECQV1H154JZ3 154J 50V TP5.0 MA D310 0DS124409AA 1SS244 TP ROHM KOREA
C749 0CE2256R638 2.2000UF SMS 250V M FM5 TP5 D311 0DS124409AA 1SS244 TP ROHM KOREA
C750 0CK1040K945 0.1UF 50V Z F TR D312 0DS124409AA 1SS244 TP ROHM KOREA
C751 181-288N MKT 100V 103JTR PHS86103 D313 0DS124409AA 1SS244 TP ROHM KOREA
C752 0CQ4721N419 0.0047U 100V J POLY NI TP5 D314 0DS124409AA 1SS244 TP ROHM KOREA
C754 0CC4700W405 47PF 500V J SL TP D315 0DS124409AA 1SS244 TP ROHM KOREA
C755 181-288B MKT 100V 104JTR PHS26104 D316 6210TCE003J BAS2550T BO SUNG 2550MM AXIAL5
C767 0CK10301510 0.01M 1KV K B S D317 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C771 0CK10301510 0.01M 1KV K B S D401 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C773 0CE107CH638 100UF SHL,SD 25V M FM5 TP 5 D402 0DD140009AA EK14 V(1) TP SANKEN E/EO-TMD 4
C774 181-288B MKT 100V 104JTR PHS26104 D403 0DRGS00149A 1N5817 GENERAL SEMICONDUCTOR T
C775 0CK2210K515 220P 50V K B TS D512 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C781 0CK1030K945 0.01UF 50V Z F TR D701 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1
C801 0CK1040K945 0.1UF 50V Z F TR D702 0DS124409AA 1SS244 TP ROHM KOREA
C802 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D704 0IPMGSK004A STR-G8644D(LF1140) SANKEN 5P S
C805 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D705 0DR140059DA 1N4005TB52 TP LITEON DO41 600V
C810 0CE106CK638 10UF SHL,SD 50V M FM5 TP 5 D706 0DR359150AA BY359F-1500 BK PHILIPS SOD10
C821 0CK1040K945 0.1UF 50V Z F TR D709 0DR400409AB UF4004 TP G.I DO204AL 400V 1A
C822 0CN1040K949 0.1M 50V Z F TA52 D710 0DR320400AA S3L20U-4004P15 BK SHINDENGEN N
C901 0CBZTBU002B BULK PCX2 335 474K D711 0DS141489AB