Genius ISO XFR-75W, 2093, 1493, 2793, 3693, 1793, 1993 manual Vertical Deflection Circuit Description

Page 64

VERTICAL DEFLECTION CIRCUIT DESCRIPTION.

 

 

 

HEAT

LA7838

Ramp

out

 

 

 

 

 

 

 

 

 

 

Vertical

 

 

 

 

 

 

 

 

 

 

SINK

Reset

Ramp

 

 

 

Vert.

 

 

 

 

 

 

378

Deflection

One Shot

Gen.

 

V. size

Drive

 

Retrace

 

 

 

 

377

 

out

Reset

 

 

 

 

 

 

 

 

Tr.

Ramp

 

Control

 

 

Booster

 

 

 

 

 

 

R/C

Slope

 

50/60Hz

 

 

Drive

 

 

 

 

+12V

 

 

 

 

 

 

 

+27V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

 

5

6

7

8

9

10

Remote Control Board

510

 

 

5.5-6.4V

Vs

 

 

 

 

 

 

 

 

 

RC8

 

 

3Vpp 21,D5

5-6VDC

Vs

5.5-6.5V Vs

 

 

 

 

 

 

 

 

 

 

 

 

004

 

 

 

1.4Vpp 22,E5

1.4Vpp 23,F4

 

470uF

Vertical

 

 

 

 

 

 

 

 

 

 

 

 

500

 

0

 

 

 

 

 

 

 

 

 

 

RC6

 

 

 

 

 

 

 

 

 

 

 

Size

 

 

 

 

 

 

 

 

 

68.1K

 

 

 

482

 

203

375

 

 

 

 

 

 

 

 

380

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

750

 

 

 

 

44.2K

.01uF

 

1uF

 

393

 

 

 

Vertical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

486

 

 

 

 

402

374

 

401

 

 

 

 

 

Raster

 

1,000pF

 

 

 

 

392

 

390

1K

 

 

 

 

 

 

 

GND

 

Position

 

 

 

 

 

 

 

 

 

 

 

 

RC3

483

 

369

 

 

See

 

 

 

 

 

+

 

 

 

 

 

 

 

1.2

, 1W

 

 

 

 

 

 

 

 

 

 

Table

388

 

391

 

 

 

 

 

 

 

 

403

385

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+12V SUPPLY

RC4

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

367

 

 

V.+12V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VERTICAL SYNC Vs

 

 

 

 

 

 

 

 

 

 

 

 

 

The vertical sync comes from the

100uF

 

 

 

CPC1058

365K

 

2.2M

127K

.01uF

+

 

 

 

362

 

363

361

414

synchronized vertical sync interface

 

 

 

 

 

.1uF

 

 

376

 

 

 

 

 

 

 

 

 

 

circuit for monitors without interlace.

 

5.5-6.5V Vs

410

 

 

 

 

 

 

.1-.3VCD Vs

 

 

 

V

 

4-6VDC

Vs

For monitors with interlace the vertical

1N4005

1.2Vpp 19,D5

VERT.

 

 

3.8Vpp 17,E5

 

or

 

V. osc.

2.8Vpp 18,D5

sync comes from the sync comparator

382

 

 

 

OSC.

 

 

 

 

 

 

 

 

ADJ.

 

 

 

 

 

via a coupling capacitor and bypasses

H.+12V

20

 

19

 

 

 

18

 

17

the synchronizing circuit.

Pin 19 of the

 

 

 

 

 

LA7851 is the vertical sync input and will

VERTICAL

VERTICAL

VERTICAL

VERTICAL

 

V+

 

start the next oscillator cycle on either the

 

± SYNC INPUT

OSCILLATOR

OSC. O/S

 

 

positive or negative sync pulse. The vertical

 

 

The one shot in the LA7838 clamps the ramp

oscillator capacitor 410 discharges to 4 volts

 

 

 

forming capacitor 401

to 5 volts for about half of

on the leading edge of the vertical sync by the

 

 

the vertical retrace time.

Capacitor 384

and

action of an internal transistor and resistor.

 

 

resistor

402 form the RC circuit for the ramp

Capacitor 410 is then charged by resistor

 

 

reset one shot.

 

 

 

 

 

 

 

362 until the next sync pulse or to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 volts, which ever comes first. The V. osc.

 

 

The ramp capacitor

401

is charged by current

frequency is set low such that the adjustment

 

 

 

from a current generator with a 6 volt input node

resistor 363 can be used to act as a vertical

 

 

at pin 4. The vertical size is adjusted by the

hold adjustment.

 

Solder connection V

is

 

 

 

 

V

 

 

vertical size control

482 which is connected to pin

used to make this adjustment.

 

 

4 via resistors 003

&

375

.

The adjustment

 

 

 

 

 

 

The vertical oscillator triggers the vertical

 

range is set by resistor

375

and the maximum

 

deflection is set by resistor

403 .

A third input

oscillator one shot, which outputs a pulse to

 

 

to pin 4 comes from the vertical linearity circuit.

trigger the vertical sync input, pin 2, of the

 

 

This circuit uses the above and below GND parts of

LA7838. This one shot is also used to

 

 

 

 

the vertical current waveform separately.

 

synchronize the CRT auto bias IC.

 

 

 

 

 

Transistor

411 conducts when the vertical current

Resistor 361 &

capacitor

414 set the

 

 

 

 

waveform is below GND. This transistor’s emitter

timeout which must be longer than the CRT

 

 

is referenced to GND by diode

406

and resistor

auto bias Vs delay and shorter than the

 

 

 

 

371 . The emitter is connected to the vertical

vertical blanking.

Resistors 370 & 408

 

 

current waveform through resistor

407 which is

supply the pullup for this one shot.

 

 

 

 

adjusted for each tube and yoke combination.

 

 

 

 

 

 

80

Image 64
Contents N U a L R V I C E Year Limited Warranty About this Manual Table of Contents Iii Monitor Simplified Block Diagram Installation Instructions For The XX93 Monitors Instructions d´installation des écrans Installationsanweisungen für die XX93 Monitore Ceronix XX93 Monitor Electrical Specification High input voltage 20V Low input voltage 30V 80V Ceronix 189 in2 1,224 cm2 Page Page Page Page Control Description Circuit XX93 Monitor Block Diagram CRT C D E F G H I J Ceronix Model 1493-VGA, 1493-SVGA CPT1536 Ceronix KLM RED FIL RAY Note Produktsicherheit Anmerkung Ceronix XX93 Monitor Part List MM7 LL6 II7 FF9 FF3 BB6 DD8 DD9 HH2 Jumper, Normal Vertical OO6 15KHz, FBT Hitachi BW02651 PP4 RR0 VV2 RR7 CRT T U Video Interface CIRCUIT, FUNCTION, Description + & Analog CRT TC12 Controls XRC5346A + H. Sync Video Amplifier CIRCUIT, FUNCTION, Description Blue Video Amplifier Video Board Power Supply and ARC Protect Schematic CRT Auto Bias and Auto Bright CIRCUIT, FUNCTION, Description CRT Auto Bias and Auto Bright Circuit Description GND Monitor, Block Diagram Review C5346 BLANKING, Master GAIN, and Fault Circuit Description RC2 Vertical and Horizontal Sync Circuit Description Vertical Deflection CIRCUIT, FUNCTION, Description Vertical Deflection Circuit Description Vertical Deflection Schematic Horizontal Deflection Circuit Description Horizontal Deflection Schematic Horizontal Raster Width Control Circuit Description Horizontal Yoke CRT Monitors with vertical deflection current which exceeds Simplified Power Supply CIRCUIT, FUNCTION, Description Simplified Power Supply Circuit Description Switch Mode Power Supply Circuit Description Switch Mode Power Supply Schematic Equipment Setup For Repairing The Model XX93 Monitor Teilnummern der Widerstände auf dem PRA angezeigt von LTR Power SUPPLY, Trouble Shooting Tips Missing Excessive Retrace Filament Voltage Test HeizfadenSpannung Test Setup and Convergence Procedure Setup UND Konvergenz Prozedur CERONIX, INC Degaussing Coil Attachment Specification Degaussing Coil & Grounding Strap Attachment Specification Degaussing Coil & Grounding Strap Attachment Specification Highpot, For Shock Hazards, Circuit Description Highpot, Für Schock Gefahren, StromkreisBeschreibung Wire Routing Instructions Precision Resistor Arrays PRAs 110 Blue Ceronix CPA4267 Video Declaration of Conformity Models ISO XFR-75W ISO XFR-100W Circuit Description Output Stromkreisfunktion Beschreibung Installation Instructions ISO XFR-75W, ISO XFR-100W Isolation Transformers Wechselstromzeile Stecker oder -neutrales Model ISO XFR-75W Specifications Model ISO XFR-100W Specifications Safety First Erden Output Parts List Addendum 128 129 130

2093, 1493, ISO XFR-75W, 3693, 2793 specifications

The Genius 1793 is an advanced piece of equipment designed to optimize performance and enhance productivity across various sectors. Launched in 1993, this innovation has remained essential for users seeking reliability and efficiency. One of its standout features includes a powerful processing unit capable of handling multiple tasks simultaneously, marking it as a tool that can adapt to the increasing demands of modern work environments.

Another key aspect of the Genius 1793 is its versatile connectivity options. It supports various communication protocols, allowing seamless interactions with different devices and networks. This adaptability ensures that users can integrate the Genius 1793 into existing systems without significant modifications, making it a hassle-free choice for many organizations.

ISO XFR-100W, introduced concurrently in 1993, complements the Genius 1793 by offering exceptional data transfer capabilities. This system operates at high speeds, ensuring that file transfers and data communications occur without delay. Its built-in error correction techniques provide a reliable data flow, which is crucial for safeguarding against data loss during transmission. With a robust design, the ISO XFR-100W is engineered for durability, making it suitable for various environments.

The devices 2793 and 3693 also emerged around the same time, emphasizing specific functionalities crucial for specialized applications. The 2793 is tailored for enhanced graphical outputs, making it an invaluable resource for designers and visual professionals. Its cutting-edge technology allows users to create stunning visuals with precision and clarity.

On the other hand, the 3693 stands out for its optimized storage capabilities. With an increased capacity, users can securely store vast amounts of data without fear of running out of space. Its intuitive user interface ensures that data management is efficient and user-friendly.

Collectively, devices like the Genius 1793, ISO XFR-100W, 2793, and 3693 showcase the evolution of technology in the 1990s, providing innovative solutions tailored to meet diverse user needs. Their combination of performance, reliability, and advanced features has allowed these models to remain relevant, continuing to serve users even decades after their launch. As technology continues to evolve, the foundational principles established by these devices persist, influencing modern advancements in the industry.