S E R V I C E M A N U A L

1428 - 30K Series Color Monitors

Copyright 1997Produced by M.M

COLOR DATA DISPLAY by KRISTEL, ISO-9001 CERTIFIED

COLOR SPECIFICATIONS

CRT

• From 10” to 28” diagonal measure• P22 phosphor• Polished faceplate standard (dark - tint, light transmission: 57%, none glare, deflection angle 90 degree, dot pitch: 0.28 - 0.82. Optional finer pitches available.

INPUT SIGNALS

• Video: Red, Green, Blue separate input Impedance: 75 ohm, amplitude: 0.7Vp-p• Horizontal scan: 31.5 KHz / 35.5 KHz, TTL positive or negative• Vertical signal: 50-70Hz

VIDEO CHARACTERISTICS

• Video bandwidth: 45MHz• Power supply: universal (90-250vAC)• Resolution: VGA /sVGA• Linear distortion: 10% max.• Geometric distortion: 3,0mm max. top/bottom, 4.0mm max. left/right

ENVIRONMENTAL CONDITIONS

• Operating temp. 0-55 degree C. Complies with UL, CSA and TUVradiation performancestandard.

pg.1

1428 - 30K series

MECHANICAL

• The 14” monitor is also available in universal mount brackets. The monitor can bemounted in the user’s cabinet horizontally or vertically.

• All the models are available also as a kit - without a frame. Custom frames can be fur-nished

also available in the chassis form adaptable to individual customer requirements.

USER ADJ. CONTROLS AND ADJUSTMENTS

• HORIZONTAL size, VERTICAL size• CONTRAST BRIGHTNESS• VERTICAL center HORIZONTAL phase

• SUB-BRIGHTNESS RASTER center• SUB-SIZE VERTICAL lin.• SUB.HORIZ.size X-RAY prot.• HORIZONTAL hold B+ adj.• PINCUSHION GAIN

• R,G,B bias R,B Gain

WARNING: FOR CONTINUED SAFETY REPLACE SAFETY CRITICAL COMPO-NENTS ONLY WITH MANUFACTURER RECOMMENDED PARTSAVERTISSEMENT: POUR MAINTENIR LE DEGRE DE SECURITE DEL’APPAREIL NE REMPLACER LES COMPOSANTS DONT LE FONCTIONNEMENTEST CRITIQUE POUR LA SECURITE QUE PAR DES PIECES RECOMMANDEESPAR LE FABRICANT.

pg.2

1428-30k series

PRODUCT SAFETY NOTICE

pg.3

1428-30k series

SAFETY PRECAUTION

NOTICE: Comply with all cautions and safety related notes located on or inside thechassis or picture tube. The following precautions should be observed:

1.The design of this product contains special hardware, many circuits and componentsespecially for safety purposes.

2. For continous protection, no changes should be made to the original design unless au-thorized in writing by manufacturer.

3.Any design alterations or additions will void the manufacturer’s warranty and willfurther relieve the manufacturer of responsability for personal injury or property damageresulting there from.

4. Many electrical and mechanical parts in display sets have special safety relatedcharacteristics. These characteristics are often not evident from visual inspection nor canthe protection afforded by them necessarily be obtained by using replacement compo-nents rated for higher voltage, wattage, current etc.

5. If severe arcing occurs, remove AC power immediately and determine the cause byvisual inspection (incorect installation, cracked or melted HV harness, poor soldering,broken wires etc.)

6. No modification of any circuit should be attemted. Service work should only per-formed after you are throughly familiar with all of the safety check.

7.Do not place the monitor on unstable surface. If the product should fall, it may be-come seriously damaged and, more importantly, may cause injuries to the user.

8.Follow all wanings and instructions marked on the product.

IMPORTANT

Do not check high voltage by drawing an arc. Use a high voltage meter or a highvoltage probe with a digital voltage meter. When service is required, observe the original lead dress. Extra precaution should begiven to assure correct lead dress in high voltage circuit area. Where a short circuit hasoccurred, those components that indicate evidence of overheating should be replaced.Always use original components.NOTE: Make sure to turn power swich off before making the connection to the AnodeButton.

WARNING

X-RADIATION. Operation of this color monitor under normal conditions will not exceed the0.5 mR/h iso-exposer-rate. Be sure that the anode voltage and other tube voltages areadjusted to the recommended values.

SHOCK HAZARD. To remove any residual charge, short the anode contact button,located in the funnel of the tube, to the external conductive coating before handling the tube.

TUBE HANDLING. Tube assembly should never be handled by the tube neck, deflectionyoke or other neck components. If suspending the tube assembly from the mounting lugs, en-sure that a minimum of two are used.Under no circumstances suspend the tube assembly from one lug.To protect the screen when placing the tube face-down, ensure that the tube face rests on acushion kept free from abrasive substances / or foreign parts.

TUBE REPLACEMENT. This monitor tube incorporates integral X-radiation and implosionprotection and must be replaced with the same type number or recommended replacementto assure continued safety.

pg.4

1428-30k series

MAIN PCB, 1428-30K

pg.5

1428-30k series

Video power connector B503

Sync.connector

Hphase & Vsize - B601

Hsize, B302 Vcenter, B303

Yoke, B602A

Brightness, B902

Blk,GND,ABL,G1- B901

AC input - B501

VR901-subBRITE

VR501, B+ adj.

VR301, Pin

VR304, Gain

Degaussing coil con.

T602, FBT

-Tunning cap.C611-Damping diode, D602-Horiz.drive trafo, T601-Horiz.Output, Q602-Driver Resistor, R615

VR602, X-Ray

VR308, sub-H-size

VR604, Raster cent.

VR601, H-Hold

VR310, V-Lin.

LED,power indic.

⇒ POWER SUPPLY

Bridge Rectifier

Q501, MOSFET

L501, FCC choke

SYNC.SECTION

VERT. SEC.

L603, Linearity coil

∗ VR CONTROL INFORMATION∗ CONNECTORS INFORMATION∗ PRINCIPAL SECTIONS AREA KRISTEL 100-100-1428-30K PCB rev.A with blanking circuit incorporated.

FIG. 1A

MAIN PCB, 1428-30K

pg.5A

1428-30k series

Video power connector B503

Sync.connector

Hphase & Vsize - B601

Hsize, B302 Vcenter, B303

Yoke, B602A

Brightness, B902

Blk,GND,ABL,G1- B901

AC input - B501

VR901-subBRITE

VR501, B+ adj.

VR301, Pin

VR304, Gain

Degaussing coil con.

T602, FBT

-Tunning cap.C611-Damping diode, D602-Horiz.drive trafo, T601-Horiz.Output, Q602-Driver Resistor, R615

VR602, X-Ray

VR308, sub-H-size

VR604, Raster cent.

VR601, H-Hold

VR310, V-Lin.

LED,power indic.

⇒ POWER SUPPLY

Bridge Rectifier

Q501, MOSFET

L501, FCC choke

SYNC.SECTION

VERT. SEC.

L603, Linearity coil

KRISTEL 100-100-1428-30K PCB rev.A

FIG. 1A

FIG. 2A

NOTE: for AutoBias optional configuration,B902 is NOT used, and B901 is like in fig.2A

B902

AUTOBIAS FORMAT

from left to right:-white = VR-blue = HR-green = GP-yellow = G1DRV-orange = G1-not used-black = GND4

VIDEO PCB CONNECTION INFORMATION & PRINCIPAL SECTIONS AREA

CRT BOARD - ver.1.1 200-200-1564

pg.6

1428-30k series

R, G, B - bias adj.

R251

HEATER Resistor

R,B - Drive/Gain adj.

video conn.

LM1203PREAMPLIFIERCIRCUIT

R208

contrast conn

DAG spring conn.

R236R233R286Load Resistors

G2 connector

GND clamp

GND,V & H sync.conn. to B901 main PCB

G1, ABL and GNDconnect. to B901main PCB

GND2, to B503, main PCB

12vDC from B503, main PCB

B+, from B503main PCB

7vDC (heater)from B503, main PCB

BLK

Blanking, fromB902, main PCB

CRT socket

pg.6.a

1428-30k series /AB

VIDEO PCB - ABNO2CX /autobias/ INFORMATION& PRINCIPAL SECTIONS AREA

R236, R230 & R233 / LOAD RESISTORs IC202 , BIAS CONTROLPROCESSOR

IC203, BEAMCURRENTBUFFER

VIDEO PREAMPLI-FIER/ 3 channel

IC201

blue wire: HR

red wire: ABL

CO

NT

RA

STC

ON

NE

CT

OR

GND5 /ground

yellow wire: Vsync.

blue wire: Hsync

P201

/LO

GIC

CO

NN

EC

TO

R

CRT socket / largeor small neck

NOTE:small neck /ABN02CXlarge neck / ABN02C

red wire: HTR1blue wire: +88vDCblack wire: GND2gray wire: GND3GND1: dag spring connectG2 pin connectorwhite wire: =12vDC

CRT BOARD -ver.ABN02CX

green wire: GP

white wire: VR

yellow wire:G1DRV

1428-30k series, AUTO BIAS

AUTOMATIC BIASING VIDEO SYSTEM

PURPOSEThe purpose of the system is to establish and maintain a constant and correct black level (cutoff level) onthe CRT screen, without the need for manually adjusting the biasing of the individual video amplifiers.This has the advantage of greatly simplifying the initial setup, plus maintaining the biasing conditionsthroughout the life of the CRT as it ages. It also eliminates the need for individual red, green, and bluebias potentiometers, and even a brightness control. The Automatic Biasing System is integrated into thevideo amplifier system.

OVERVIEW OF OPERATIONThe system works by sending a DC correction to each of the video amplifiers, in response to cathodecurrent changes resulting from a fixed step in G1 voltage. During a setup and sampling period after ver-tical retrace, a fixed step is applied to the G1 grid, while the three cathodes are held steady. When biasconditions are correct, this voltage step results in a small step in cathode current for each gun. This stepproduces a faint horizontal line at the top of the screen, visible if the vertical size is set low enough.

OPERATION DESCRIPTIONVideo System: The basic video system consists of a three-channel video processor IC201, and threevideo output stages (Q205, Q202, Q206, and Q207 comprise the Red Video Output stage). The Auto-matic Biasing System adds a Bias Control Processor, IC202, plus Beam Current Buffers IC203B-D, a G1control circuit IC203A, and clamping circuits. IC201 contains three video preamplifiers with DC-controlled gain and DC clamping. IC202 contains timing circuits, sample-and-hold circuits, and buffers.

The three video channels are identical, so only the Red channel will be described in detail. The Red videoinput signal is terminated by R201, and is delivered to the input of IC201 at pin 4 through R274 and ACcoupling capacitor C201. Pin 11 supplies a DC bias level for the video input signal through R204.

IC201 increases the 0.7V p-p nominal video input level to about 2.7V p-p at pin 25, which then drivesthe base of Q202. The exact amount of gain is determined by the DC level on pin 12, the Contrast con-trol input. This DC level controls the gain of all three video channels simultaneously.

Q202 and Q205 operate as a cascode video output amplifier, with a gain of about 15. The video swingat Q205's collector is about 40V p-p. Q206 and Q207 operate as a buffer, driving the red CRT cathodethrough R242.

Q201 is driven by a horizontal retrace signal, and supplies a negative-going clamping pulse to IC201 pin14. This provides DC restoration for the video signal by forcing the output of the video processor,IC201 pin 25, to the same DC voltage as on pin 24, during horizontal retrace time.

1428-30k series, AUTO BIAS

pg.7

1428-30k series

TOP OVERLAY KRISTEL / 100-100-1428-30K PCB

PURPLE: Power Supply SectionRED: Sync.Processing SectionBLUE: Vertical Section

GREEN: Horizontal Output SectionYELLOW: HV Section (FBT)CORAL: Electronic Width Control

SCHEMATIC DIAGRAM CRT BOARD model: 200-200—1564USED IN CONJUNCTION WITH 1428-30k pcb

NOTEAll marked area with red square is subject to be changed accordingly with the model of theCRT and the characteristics of the deflection yoke existing on the CRT.Actual schematics is not refered as autobias video board.

pg.8

1428-30k series

TO B503, main PCB

B211 to B901 main PCB

To B801 main PCB

G1 ABL GND

REMOTE CONTROL BLOCK / SIX CONTROLS or FIVE CONTROLS (AB)

pg.9

1428-30k series

BLOCK DIAGRAM 100-100-1428-30K

OPTIONAL forAUTOBIAS

VE

RT

ICA

LY

OK

E

HORIZONTALYOKE110 - 240 vAC

CHARACTERISTICS of potentiometers:

NOT USED in AB configuration

Hsize=VR307=5Kohm; Vsize=VR309=10Kohm; Contrast=VR201=10KohmVcent=VR302=5Kohm; Hphase=VR604; Brightness=VR901=100kohm

POWER SUPPLY - CIRCUIT DESCRIPTION / guide for switching powersupply and components.

1.POWER CIRCUIT

pg.10

1428-30k series

FUNCTIONAL BLOCK DIAGRAMSwitching Power Supply

The power circuit includes the lines filter, input rectifiercircuit, start up, current-mode control and OVP. Pleaserefer to the circuit diagram.

to Q803 / coll.

to R815,R604,L601...

to R615,IC301

to pin2 FBT...

to R339,R331...

1.1 LINE FILTER CIRCUIT

The line filter circuit is comprised of C501, C502 and L501. This line filter tends to reduce the noise of con-ducted EMI from monitor into the power line.

1.2 INPUT RECTIFIER CIRCUIT

The input rectifier circuit is comprised of BD501 and C505. BD501 and C505 is a full - wave mode rectifier.L501 is used to reduce the surge current while the power supply is turned on.

1.3 START UP CIRCUIT

The resistor R502 provides the start-up current of IC501. The turn-on and turn-off thresholds of under volt-age lockout circuit in IC501 are set up internally at 16vDC respectively. To start up, C506 must be charged to16vDC with a current of 0.3mA - 0.5mA which depends on the IC501 start-up current characteristics andR502 resistor value.

1.4 CURRENT MODE CONTROL OPERATION

When Vcc of IC501 pin 7 is charged to more than 16V, there is a square wave on the output pin 6 which canbe adjusted to peak +/- Amp. for driving the gate of Q501. The current-mode sensing resistor R513 senses theprimary current wave in order to control the current-mode PWM and limit the total output power. Pin 2 andpin 1 is an error AMP section. IC501 detects the output voltage while the line voltage and load currentchange.

1.5 OVP CIRCUIT

ZD502 is the OVP circuit (over voltage protection). If an over voltage condition exists the ZD502 will shutdown IC501.

Per above related considerations a switching power supply is a relatively complex circuit (see functionalblock diagram). It is apparent here that the heart of the supply is really the high frequency inverter. It is herethat the work of chopping the rectified line at the high frequency (20-200kHz) is done. Also the line voltage istransformed down to the correct output level. The 60 Hz input line is rectified and filtered by one block andafter the inverter steps this voltage down, the output is again rectified and filtered by another.The task of regu-lating the output voltage is left to the control circuit which closes the loop from the output to the inverter.

pg.11

1428-30k series

2. SYNCHRONOUS PROCESSING CIRCUIT

IC 801 circuit (WT8041), a sychronous signal processor of multi-sync, is capapble of many functions such asthe horizontal and vertical frequency discrimination, display mode selection and synchronous pulse polaritydetection. Pin 15 and pin 16 work as a clock generating circuit. Output pin 4 is active high while pin 5 is ac-tive low, fixed polarity and have the same pulse width as the original horizontal and vertical sync. signal. Pin7 works as a frequency discrimination which is active low. Pin 9 and 14 work as mode selector which controlsoutput. These output pins are to control Vsize, Hphase and Hosc of every display mode.

3 HORIZONTAL / VERTICAL PROCESSOR

The IC 601 is a combination horizontal and vertical processor.The vertical SYNC is applied to pin 14 of IC601. Oscillation is determined by C306, R303 and C305. Thesaw-tooth pulse generator built inside the IC can generate saw-tooth signal through a buffer stage to pin 15.

1428-30k series

pg. 12

to L502 / power supply

to R907 / FBT

to V

R30

1to R

334

to R

613 to FBT

6. H-SIZE CONTROL and PIN COMPENSATION

The control of picture width and side pincushion compensation is achieved through changing the source volt-age of the horizontal deflection circuit. There’s need for some components to build a diode modulator. Thiscircuit consist of C620, L602, C611, D602, D610 and H-DY.The parabolic wave is fed to the base of Q303 via double integrated circuit wich can generate a side pincush-ion compensation wave. The H-width control voltage and parabolic wave are amplified by Q304 and Q306,then they are fed to the diode modulator for controlling the source voltage of the horizontal deflection circuit.

pg.14

1428-30k series

ELECTRONIC WIDTH CONTROL / schematic.

to Horizontal YOKE

to L608

to L503

to C

522

(+)

to L

503

to Q

805,

Q80

6...

to IC601, D801..

7. VIDEO AMPLIFIER CIRCUIT

The video circuit includes: video processing IC201 and video amplifier circuit (Q211, Q205 and Q208). Theanalog video processor IC201 includes gain control and DC restoration. Video signals RGB are input throughthe coupling capacitorsC206, C205, C204 and than sent to IC201.A cascode circuit is used to amplify each R,G,B channel. The value for channel gain is calculated by collectorand emitter resistances. The L205, L204 and L205 are series peaking inductors.The output amplifier circuit stage, consisting of Q202, Q205, Q206 and Q205 is used to amplify video signalto 40Vp-p and is represent one of the R,G, B channels.SG202, SG201 and SG203 respectively R252 and R253 are arc protection components which protect electricalcomponents when CRT arc condition occurs.

pg.15

1428-30k series

(2) (3)

8. CRT TECHNICAL DATA / CHUNGHWA 14” /

(5)

pg.16

1428-30k series

ELECTRICAL DATA AND RATINGS / CHUNGHWA 14” /

pg.17

1428-30k series

GENERAL ADJUSTMENT

FACTORY SPECIFICATION

Unless being specified, “Factory spec.” means the final adjustment made by the operator inthe factory. This adjustment is intended to be close to the standard display characteristics.

TEST SIGNAL

R,G,B video signals are identical and specified signals for standard VGA mode of 480 lines.

WARM-UP TIME

Minimum 15 minutes is required for warming up the monitor. Direction CRT faces East.Ambient lighting environment: 400 to 600 lux.

AMBIENT TEMPERATURE

25°C (77° F)

TESTING MODE

640x480 / 800x600 upon request;

TOOLS and TEST EQUIPMENT Required

• miniature flat screw driver• plastic Hex wrench• ass’t clips and 1µF/50v capacitor• external degaussing coil• color analyzer / recommended: MINOLTA CA-100 /• IBM / PC compatible• digital multimeter pg.18

1428-30k series

• CRT diagnostic software included in Kristel 3.5” diskette• hipot tester• video generator• TEST Bezel - fixture model / depending on customer availability

PROCEDURE

⇒ Apply AC recommended power and video signal from customer supplied generator or use IBM compatible computer⇒ Adjust screen control (FBT) to be able to view screen & focus control to best possible

setting.⇒ Convergence: some fine adjustment with pre-mated yokes to CRT can be achieved with

magnetic tabs (see instructions and theoretical considerations - how to provide a best convergence.⇒ Adjust B+ from VR501 / per CRT requirement:• connect the positive lead of multimeter to D508, negative to chassis• adjust VR 501 to obtain the voltage resulted from the spec. of the CRT⇒ Select crosshatch pattern from video source / 31.5KHz (640x480)⇒ Vertical linearity adjustment: adjust VR310 to allow no more than 3.0mm max. misadjustment.⇒ Vertical size is performed from VR309 remote control potentiometer⇒ Width size adj. is performed from VR307 and VR501. maximum attention for heater voltage / maximum permissible value must be between 5.9 - 6.5vDC /⇒ Horizontal raster centering is performed from VR604⇒ Horizontal Phase adjustment:• input 31.5kHz timing with crosshatch pattern• adjust VR604 to center the picture per specs.⇒ Pincushion adjustment: VR304 and VR301• input 31.5 kHz (640x480) timing with crosshatch pattern• adjust VR304 and 301 to obtain the best pincushion pattern⇒ Focus adjustment:• display any character all over the screen, set contrast in max. and brightness in cut off po-

sition. Adjust focus for best resolution possible.⇒ Horizontal Oscillating Frequency, connect a capacitor 10µF/50volt, to Hsync from videoPCB to GND, than adjust VR601 till the sync slash blanking bar is vertically stable possibleafter that remove the jumper pg.19

1428-30k series

⇒ Background white balance adjustment:• set all bias VR’s (204, 205 and 206) to max. and let the raster to be invisible• display black pattern (all video signals are disable) and adjust SCREEN VR,• as soon as the raster appears, check out which color (red, green or blue) comes out first• adjust bias VR of the other 2 colors to get gray raster• adjust SCREEN (from FBT) to let the gray raster no larger than 1FT - L⇒ White balance adjustment:• use color analyzer photometer, display center block patern, set the brightness to mini-

mum than adjust the contrast VR to let brightness to be 35 FL and RGB balanced per Minolta reading.⇒ X-RAY protection seeting: VR602• input 31.5 kHz (640x489) with crosshatch pattern• connect the positive lead of multimeter to ZD601 (+)• adjust VR 604 to obtain a 3.5 - 5.4vDC reading⇒ Purity adjustment:• is associated with convergence alignment / see procedure - required previous experience/• display magenta color pattern• adjust the purity magnet so that the picture is in magenta color. By turning two overlap-

ping pawls in opposite directions, move them until they are at the same angle, 9 o’clock and 3 o’clock respectively. / as shown in fig.1 /• for static convergence adj. / as shown in fig.2 and fig.3 / follow the next steps:a/ display magenta crosshatch patternb/ open the two pawls of the 4-pole magnets to allow the red and blue vertical line to unitec/ open and rotate the two pawls at a constant angle so that the red and blue horizontal linescan united/ if the vertical line deviates, open the two pawls at the deviation position and make a minoradjustment by changing its angle.e/ display cross hatch patternf/ make the red and blue vertical lines at the center unite whith the green by opening the two6-pole pawls.g/ rotate the two pawls at constant angle so that red and blue horizontal libes can unite withthe green.f/ if the vertical lines deviate, change the angle of pawls from the deviation pos.

pg.20

1428-30k series

. pg.21

1428-30k series

CONVERGENCE and PURITY

. pg.22

1428-30k series

MORE INFORMATION regarding convergence and purity:

R,G, B bias R,B gain

P 201

pg.23

1428-30k series

TROUBLE SHOOTING GUIDE

. pg.24

1428-30k series

. pg.25

1428-30k series

pg.26

1428-30k series

pg.27

1428-30k series

BILL OF MATERIAL

pg.28

1428-30k series

pg.29

1428-30k series

pg.30

1428-30k series

pg.31

1428-30k series

pg.32

1428-30k series

pg.33

1428-30k series

pg.34

1428-30k series

pg.35

1428-30k series

pg.36

1428-30k series

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

ICLM3080

302

NOTES1. RESISTOR VALUES ARE IN O(OHM) K=1,000 M=1,000,000

2. ALL RESISTOR ARE 1/8WATT. EXCEPT WHERE OTHERWISE INDICATED

3. CAPACITOR VALUES ARE IN uf UNLESS OTHERWISE INDICATED P=pf

4. ALL CAPACITOR ARE 50 VOLTS EXCEPT WHERE OTHERWISE INDICATED

1

3

5

7 G1

ABL

GND

43

2

7

6

5

T501

B901

7

6

3,

4

2

1

B302

*

*

B502

B+ ADJ

5. J88:15" USE J4:14" USE.

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16H-IN

V-IN

GND

H-OUT

V-OUT

CLAMP

SELECT

DELAY VDD

350

400

480

600

768

OSC

OSC

8

DOUBLE FOCUS CIRCUIT (17" USE)

IC801

CM1438

T602

B501

J4

15

14

16

12

9

10

11

13

BLINKING

B801

H-SYNC

FROM FBT

G1.DRV

J88

V-RETR IN

GP-OUT

H-RETR IN

1 23 11 13 12 18

H-IN V-IN V-LIN V-SIZE H-PHASE VS H-OUT

H-GND

VREF

V-RAMP

LIN-OUTV-HOLDCV-GNDCPHASECOMPR 1

PHASECOMP2

C

H-FLYBACKINPUT TDA9102B

TDA8172

4

OUTPUT

Vs OUTPUTSTAGESUPPLY

FLYBACK

SCREEN

FOCUS

GND VCC

OUT

48

S

D

IP3842N

HV

IC601IC301

SENSE

100-100-1428 1.0

K R I S T E L Corporation

D

0 0Thursday, March 04, 1999

Size Document Number Rev

Date: Sheet of

?

94S7RPFE

?

94S7RX9H

?

95#Y9IA3

?

978GNTEP

?

978H1C4E

I00243

978GVO@U

I00245

95#Y9CRH

14 17 16 10 20 7

5 2 36

7 Vref

8

91 INVERTING

GND

5 7

2 6 G

COMP1

R/CVREF

FB

3

4

88V12V

GND

7V

6

19

15

INPUT

5

12V

12V

12V

5V

R6201.5K

D3011N4002

+C312220uF25V

+ C3082200U25V105

R3111.5K

R3150.681W

R3106.8K

R3131.5R1/2W

C3140.22uF

+ C31147uF25V

+

C310

47U50V

R30812K

V-YOKE

C3210.1uF

R9142K

R9132K

C9050.1u100V

+

C90410u 50V

R9121.5K1/2W

Q903

2SC1213C

D904FF1004

Q3012SA733

R3181K

R3191K

R3173.9K

R316100R1W

Q3022SC1213C

R91110K

+ C9031u50V

R906150K

Q9022SA733

VR302

5KBV-CENT

+ C90210U200V105

C3060.33U

MEF

R907270KR503

150K

R50627K

R51247R

R50910K

R5130.22R

2W

R5101K

R50422K

R50722R

+ C3071000U16V

R50830K

R5163303W

R517470

C5020.1uFAC250V

C503

R51527K3W

C509101

C507104 C510

222J

C513681

R502120K

3WC504222AC250VX2

C5010.1uFAC250V

C5161031KV

D508HER108

D509HER204

D512HER204

+C5261000U25V

+

C505330U400V

+

C506100U25V

+

C512

47uF50V

+ C520100U160V105

+ C5231000U25V105

+ C522470U25V105

+C524470U25V

+ C52122U160V105

D502BA159

Q503

B988

D505HER103

D504FR103

D513MR856

D507MR856

D514MR856

R518102W

R3602.22W

R9236.8K

R9212.2K

C313100U25V

R361470

R8041M

R9102.2K

Q906C945

C540100U25V

L603H-LIN

R6341K

+ C6154.7uF50V

L50125MH

- +

BD501KBL06G

4A600V

L50318uH

F501T3A 220V

T3.15 110V

Q501FS7KM-16

AC SWAC100V-240V

ZD50218V

C5080.22UMEF

DEGAUSSINGCOIL

R5214.7K

C517472

AC400V

R5015R

NTCR

L60418UH

R52210K 2W

R6331 3W

PT50114

PTCR

D506MR856

C814100U25V

R524180

C5110.1U

R5451.2K 2W

C530103 500V

LEDGREEN

C3351U25V

VR309B10K

V-SIZE

C3380.1UPEI

R6032201/2W

R604150K

VR601

10KH-HOLD

R6063.3K

D9074148

D9094148

R9224.7K

R9208.2K

+ C527100U160V105

D9084148

C3150.1UPEI

Q306TIP122

R347470

VR3075K

H-SIZE

C518220P 1KV

VR308B10K

SUB-H SIZE

R505510K

R3441.2K

R511

56

D5204148

VR301B10K

S CORRECTION

R3632201/2W

R336220K

R349220K1/2W

R3432.7K

C30210U

L602180UH

C6061U25V

R34515K

1/2W

R6021.5K

C3342.2U100VMEF

D511HER204

R92012K

Q901

BF423

R90310K

C6660.1U

VR310B5K

V-LIN

R33933K

R331150K

R332150K

R33322K

R33422K

C33110U25V

S601

C945

C9011U

C3301U

E.C

VR3041KPIN

R3373.3K

Q303C945

R3404.7K

C33310U25V

Q304A733P

R3383.3KR335

43K

Q308

A733P

R3414.7K

C33210U25V

R3424.7K

VR902

B100KBRIGHT

C9060.1U100VMEF

R9091K

Q904BF422

R9082.2K

R905470

R90110

VR901B2KSUB-BRIGHT

R9041.5K

D503BA159

C514102

1KV

R51410K3W

H-YOKE

C362103PEI

R6183301/2W

T601HDT

R61747R1/2W

C6134711KV

Q602C5149

Q601C1213C

C621103

D602RP3F

R612330

C6115122KVR613

220R

R614390R

+ C609100U25V

R6152402W

ZD6016.2V

R6198.2K

+ C6164.7U50V

VR6025KBX-RAY

D605FF1003

L50218UH

XR8014.7K

D8041N4148

Q805

A733Q806

A733Q807

A733

C3162200U

25V105

C80910U25V

C8080.1U

C8060.1U

R82210K

C8140.1U

+

C32047uF 25V

C620103630V

R6355.1K

D610RG4A

L801560UH

C804100U25V

R8164.7K

R8181K

Q804C945

R81710K

C8010.1U

R8013.3K

R8021.5K

R8031.5K

R815100

1W

VR501

5K

C80256P

C80356P

X8013.58MHZ

ZD801HZ5.1V

D801IN4148

D802

IN4148

D803

IN4148

R8126.8K

J602.2K

J581.8K

R809

220K

R808

20K

R8073.9K

R806750

R8101K

R60756K

Q801C945

C805100U25V

R81910K

Q803BF422

R82010K

Q802C945

R6083.3K

+C6032.2U50V

R82310K

R8111K

C601102

C605223

C3041uFNP

R302150K

R3055.6K

R60933K

L601560UH

C3050.22uF

PEI

R30336K1/%

C6300.82U250V

R30447K

C5251000U25V105

R32715K

R30133K

C602272

C303104

R61115K

VR604

10KBH-PHASE

R3076.8K

C608220PNPO

R30947K

R31447K

R527560K1/2W

TP4

1428-30k series, AUTO BIAS

SCH

EM

AT

IC D

IAG

RA

M14

28-3

0K A

UT

O B

IAS

1428-30k series

555.South KIRK Road, ST.CHARLES, IL 60174phone: 630 / 443-1290 fax: 630 / 443- 1390

CREATION, PERFECTION, TEAMWORK