Commodore 1403 Monitor Service Manual

r

Commodore

Monitor 1403

Service Manual

10/88

Commodore

J

V.

Table of Contents'

General Information

1.1. Technical Specifications

1.2. Prices

1.3. Ordering Procedures

1.4. Handling Charges

1.5. Lead Time

1.6. Warranty

Engineering Specifications

2.1. Cathode Ray Tube

2.2. Power Requirements

2.3. Deflection Characteristics

2.4. Video Response

2.5. Display Format

2.6. Input Signal

2.7. Display Performance

2.8. Geometry Distortion

2.9. Video Cable Input Signals

2.10. External Controls

Troubleshooting Procedures

3.1. Notice for Service Personnels

3.2. Important Service Safety Information

3.3. Safety Checks and Inspections

3.4. Quick Reference for Repair

3.5. Troubleshooting Flowchart

3.6. Adjustments and Tests

3.7. Theory of Operation

Block Diagrams

4.1. DM-3014 Block Diagram

Table of Contents (cont'd.)

5. Schematic Diagrams

5.1. DM-3014 Deflection Unit

5.2. DM-3014 Video and Power Unit

6. Component Layout

7. Disassembly and Assembly

8. Sub-assembly List

9. Spare Parts List

Appendix

1. List of Major ICs

a. TDA1170N b. TDA1180P

c. 74LS86 d. LM317 e. M51392

f. HA17815

2. Spare Parts Ordering Form

3. Readers' Comment Form

This manual provides the technician useful references when servicing or maintaining the DM-3014/3015. Also included in this

manual are listings of field assembly units and spare parts needed for the maintenance of the equipment. To order the spare

parts or additional service manuals, simply fill up and mail the Spare Parts Ordering Form found at the end of this manual.

DISCLAIMERS

1. ADI Corp. expressly disclaims any and all liability arising from use and/or operation of its products, and shall not be liable for any consequential or incidental or collateral damages or injury to persons or property.

2. This manual serves as a reference only. Although utmost care has been taken in preparing this manual, ADI Corp. disclaims

responsibility for any omissions and errors contained herein.

3. Some DM-3014/3015 specifications may be modified after publication of this manual. ADI Corp. reserves the right to make any changes and improvements on the equipment without

prior notice, and disclaims responsibility for them.

4. Versions - of DM-3014/3015 released earlier than the publication of this manual may have some specifications other

than those stated within this manual. Please contact your

dealers for verification.

stored in a retreival system, or transmitted and distributed, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from

the publisher.

Please direct all inquiries and communications regarding this manual to :

ADI Corporation

Sales and Marketing Department

14F, No. 1, Sec. 4, Nan-King East Road Taipei, Taiwan Republic of China

Tel. : 886-2-713-3337 Fax : 886-2-713-6555

i

Federal Communication Commission Requirements

(Radio Frequency Interference)

This equipment generates and uses radio frequency. Interference in radio and television reception might result if the equipment is not installed in strict accordance with the manufacturer's instructions•

The DM-3014/3015 has been tested to comply with the limits of a FCC Class B computing device in accordance with the

specifications in Subpart J of Part 15 of FCC Rules, which are

designed to provide reasonable protection against such

interference when installed in a residential area.

However, there is no guarantee that interference will not occur

in any particular installation. If this equipment does interfere

with radio or television reception, which can be determined by

turning the equipment off and on in the vicinity of the receiver device, the user may use the following methods to rectify the problem:

- Re-orient the receiving antenna.

- Relocate the equipment with respect to the receiver.

- Move the equipment away from the receiver.

- Plug the equipment into a different power source so that the receiver and the equipment are on different circuits.

If the above methods fail to achieve the desired results, the user should consult a qualified dealer or an experienced radio/television technician for advice.

The user may also find the following booklet#prepared by the Federal Communications Commission (USA) useful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available through the U.S. Government Printing Office, Washington D.C., 20402, stock no. 004-000-00345-4.

ii

=== Section 1 ========================-

General Information

This service manual provides qualified technicians with the information necessary to troubleshoot and order spare parts in maintaining the equipment. The manual only contains information on the products described on the cover sheet.

As the need develops, regular updates will be provided. These updates can then be inserted into the sections affected.

1.1. Technical Specifications

The technical specifications contained in this manual reflect the current applicable specifications. They are subject to change at any time without prior notice. Updated supplements contained in an Engineering Change Notice will be provided as major revisions are made.

1.2. Prices

All prices contained in this manual are current prices. The prices are subject to change without prior notice.

New price lists will be made available each time prices are changed.

1.3. Ordering Procedures

Spare parts or sub-assembly orders should contain the part number and the model number while service manual orders should indicate the particular model number. Failure to quote any of these numbers could delay filling of the orders received.

1.4. Handling Charges

The following handling charges are to be added to the cost

of all orders received:

1.4.1. Orders below US$100

These orders are not accepted and no services will be provided.

1-1

1.4.2. Orders between US$100 and US$500

These orders can be shipped either through regular freight or through parcel post. In each case the handling charges are as follows:

A. Regular freight

Handling charges : US$50

Freight charges : Collect

B. Air parcel post

The package weight is limited to two (2) kilograms maximum. Handling charges : US$50

Tax : 10% of the ordering

price

1.4.3. Orders above US$500

All handling charges are free. Freight charges : Collect

1.5. Lead Time

Please allow ninety (90) days from date the spare part orders are received for delivery.

1.6. Warranty

ADI warrants all monitors shipped to be free from defects in workmanship and material for six (6) months from date

of shipment. This warranty does not cover shipping damage, or damages due to neglect, normal wear and tear, improper installation, usage or operation. ADI's obligation shall be limited to replacement of defective

components only.

ADI warrants all spare parts ordered for a period of ninety (90) days from date of shipment. Any spare parts

found defective within this warranty period may be shipped back to ADI to get a full replacement. However, this

warranty does not cover shipping damage, or damages due to

neglect, improper installation, usage or operation.

1-2

Engineering Specifications

Models :

DM-3014/3015

Date : June 4, 1987

Description : IBM Personal System/2 models 30, 50, 60

compatible monochrome monitor

1. Cathode Ray Tube (CRT)

Size :

Deflection Angle Neck Diameter Face Treatment Phosphor

2. Power Requirements

14 inch diagonal (DM-3014)

15 inch diagonal (DM-3015) 90 degrees 20 0

dark glass, non-glare HI92 or equivalent

Power source Power consumption

: 110 / 220 volts AC, 0.55 Amp. : 50 watts

. Deflection Characteristics

Horizontal

Frequency : Blanking time :

Vertical

31.468 KHz

5.72 usee

Frequency :

50 / 60 / 70 Hz

IBM Personal System/2 is a registered trade mark of International Business Machines Corp.

2-1

Vertical

Blanking time :

d •

50 Hz

480 lines 400

lines

350

lines

b.

60 Hz

480

lines 400 lines 350 lines

c. 70 Hz

400

lines 350 lines

4. Video Response

Bandwidth Rise time

Fall time Characters

Horizontal resolution Vertical resolution

: 4.236 msec : 6.844 msec : 8.496 msec

: 0.905 msec : 3.511 msec : 5.163 msec

: 1.130 msec

: 2.728 msec

30 MHz (-3dB)

15 nsec max. 15 nsec max.

Up to 64 gray shades 640 / 720 pixels 350 / 400 / 480 lines

5. Display Format

Character format : 8 x 14 matrix

8 x 16 9 x 16

Capacity : 80 characters x 25 rows

80 characters x 30 rows

6. Input Signal

Video signal- Horizontal drive Vertical drive

7. Display Performance

0 - 0.7 Vpp

3.5 Vpp

Picture size

Horizontal Vertical

DM-3014

240 mm + 3 mm

180 mm + 3 mm

DM-3015

250 mm + 3 mm

190 mm + 3 mm

Linearity : Character height or width will not vary for

more than 10 % from the average character

size.

2-2

8. Geometric Distortion

DM-3014 :

Horizontal : +2 mm

Vertical :

+2 nun

DM-3015 :

Horizontal : +3 mm

Vertical : +3 mm

Video Cable Input

Signals

DM-3014 / DM-3015 Pin 2 - Video

Pin 5 - Self test Pin 7 - Ground

Pin 10 - Ground Pin 13 - H-sync Pin 14 — V-sync

10. External Controls

2-3

PS/2 Timing Chart

Vertical resolution : 480 lines

Video

Vertical frequency

(50 Hz) (60 Hz) (70 Hz)

15.762 ms 15.762 ms 496H 496H

Polarity

Hor. Vert,

Front porch 1.716 ms

54H

0.032 ms 1H

Back porch

Sync

2.446 ms 77H

0.794 ms 25H

0.063 ms 0.064 ms 2H 2H

Vertical resolution : 400 lines

Vertical frequency

Polarity

(50 Hz)

(60 Hz)

(70 Hz)

Hor.

Vert.

Video

13.156 ms 414H

-

+

Front porch

3.019 ms 95H

1.335 ms 42H

0.159 ms 5H

-

+

Back porch

3.749 ms 118H

2.097 ms 66H

0.890 ms 28H

-

+

Sync

0.064 ms 2H

-

+

2-4

PS/2 Timing Chart

(continued)

Vertical resolution : 350 lines

Vertical frequency Polarity

(50 Hz)

(60 Hz) (70 Hz) Hor. Vert.

Video 11*504 ms

362H

11.504 ms 362H

+

-

Front porch 3.845 ms

121H

2.160 ms 68H

0.985 ms 31H

+

-

Back porch

4.576 ms 144H

2.924 ms 92H

1.716 ms 54H

+

Sync

0.064 ms 2H

+

-

Horizontal frequency Video

Back porch

Front porch Sync

31.468 KHz

26.058 us

1.589 us

0.318 us

3.813 us

2-5

Troubleshooting Procedures

3.1. Notice for Service Personnels

3.2. Important Service Safety Information

3.3. Safety Checks and Inspections

3.4. Quick Reference for Repair

3.5. Troubleshooting Flowchart

3.6. Adjustments and Tests

3.7. Theory of Operation

3-1

3.1. Notice for Service Personnels before Servicing

Please read before attempting service.

1. Line voltage must be kept within +10% of rated voltage.

2. When operating at line voltage, confirm that B+ voltage is 32V DC + 0.2 V. Adjust VR901 if necessary.

3. Observe proper line voltages when adjusting the horizontal oscillator or the horizontal deflection unit.

4. Do not discharge, arc, or measure high voltage when the high voltage lead is connected to the CRT. Discharge the second anode of the CRT only after the high voltage lead has been disconnected.

.Do not discharge the high voltage lead at any time, or

else damage to the transistors will occur.

5. While the monitor is in operation, do not attempt to connect or disconnect any wirings.

6. Make sure that the power cord is disconnected before replacing any parts in the monitor.

7. When the power is on, do not attempt to short any portion of the circuit. This shorting may cause damage

to the transistors in the circuit.

8. When servicing the high-voltage area, be sure that the CRT anode is safely discharged to ground before removing the anode cap.

9. VR901 (B+ adjust) and VR809 (H-hold) controls were

sealed at the factory after their optimum values were set. Do not attempt to alter these controls during servicing.

When replacement is needed, replace only with the same

type and rating of controls. Be sure to reseal them

after replacement and readjustment.

Recommended sealing epoxy is NANPO 906, HYSOL ES4281

or their equivalents.

3-2

3.2. Important service safety Information for models DM-3014/3015

Operating the monitor outside of the cabinet or with the back removed involves a shock hazard. Work on these models should only be performed by

those who are thoroughly familiar with

precautions necessary when working with high voltage equipments.

Exercise care when servicing this chassis with

the power applied. Many B+ and high voltage RF terminals are exposed which, when carelessly contacted, can cause serious shock and damage the chassis.

Maintain interconnecting ground lead connections

between the chassis and the picture tube dag cluster when operating chassis. The B+ adjust

control in this monitor is sealed to protect the

user from X-ray radiation, and is not to be

readjusted. If adjustment becomes necessary or if the control is replaced due to damage, check the B+ reading to ensure that it is within specifications after servicing. Then seal this control according to the manufacturer's specifications.

Certain high voltage failures can increase X-ray

radiation. The monitor should not be operated

with the HV levels exceeding the specified level

for their chassis type. High line voltages will increase the possibility of HV circuit failures.

It is important to maintain all specified values of all components in the horizontal and high voltage circuit or anywhere else in the monitor

that could cause a rise to the high voltage or

to the operating power supply.

3-3

Important service safety information

( continued )

No changes should be made to the original design

of the monitor. Components shown in the shaded

areas of the schematic diagram and/or identified

by an (*) in the replacement parts list should

be replaced only with the exact factory

recommended parts.

The use of unauthorized substitute parts may

create shock, fire, radiation, or other hazards.

The picture tube used in this monitor employs an

integral implosion protection. Replace only

with a tube of the same type number for

continued safety. Handle the picture tube only

when wearing shatter-proof goggles and after

discharging the high voltage completely. Keep others without shatter-proof goggles away.

When removing springs and/or spring mountings

from the chassis, shatter-proof goggles should also be worn. Keep others without shatter-proof

goggles away.

Caution : No modification of any part of the circuit

should be attempted. Service should be done only after you are thoroughly familiar with all of the following safety checks.

3-4

3.3. Safety Checks and Inspections

Before returning the monitor to the user, perform the following safety checks first:

1. Inspect all lead dresses to make sure that the leads are not pinched and no hardware is logged between the chassis and other metal parts of the monitor.

2. Never release a repair unless all covers, clips, cans, screws, bolts, ground straps, shields, and other hardware have been installed as in the original design.

3. Critical components that are shaded on the schematic diagram and marked with an asteriskon the parts list

are used to prevent shock, fire hazard, and excessive X-radiation. All these special components must be

replaced only with the same type identical to those in the schematic diagram and parts list.

4. A check for the presence of any leakage current should be made at each exposed metal part having a return path to the chassis (jacks, cabinet metal, screw heads,

knobs, etc.) to be sure that no shock hazard exists.

Do not use a line isolation transformer during this

test.

Use an AC voltmeter having 5000 ohm per volt

sensitivity in the following manner:

a. Connect a 1500-ohm, 10-watt resistor, parallel with

a 0.15 mF, 150V AC capacitor, between a known good earth ground (water pipes, conduits, etc.) and the

exposed metallic parts one at a time. Measure the AC voltage across the resistor-capacitor network.

b. The voltage measured should not exceed 0.3V rms,

corresponding to 0.2 mA AC. Any value exceeding this limit constitutes a potential shock hazard and should be corrected before returning the monitor to

the user.

3-5

AC Voltmeter

(5000 ohms per volt or more sensitivity)

Place this probe on each

exposed metallic part.

Voltmeter hookup for leakage current test.

3-6

3.4. Quick Reference for Repair

Turn the power source on and connect the input signal

-• No raster appears.

- The source voltage is abnormal. (Check the B+ line and the horizontal

output circuit.)

- The source voltage is normal. (Check the horizontal circuit, CRT circuit

and the video circuit.) o Horizontal stripe on screen.

(Vertical circuit.)

o Vertical stripe on screen.

(DY circuit.)

- Raster appears, faulty or no picture.

No picture.

(Check the B+ line and the video circuits.)

Faulty Picture.

o The horizontal amplitude is short.

(Horizontal circuit.)

o The vertical amplitude is abnormal.

(Vertical circuit.)

o Dark screen.

(CRT and its peripheral circuit.)

o No horizontal sync.

(H-osc circuit.)

o No vertical sync.

(Vertical circuit.)

o Brightness differs between the vertical

and horizontal character dots.

(Video circuit.)

o Poor focus.

(CRT and its peripheral circuits.)

3-7

3.5. Troubleshooting Flowcharts

No display image

~T~

Raster appears when Contrast & Brightness

set to maximum?

No

Yes

Adjust brightness, contrast controls

pi\

Adjust Sub-bright control (VR806)

V

if necessary

Power circuit, H-deflection ckt may

be faulty.

+32, +15V DC bias

voltage normal?

i

Yes

H-sync pre-processor

normal?

i

Yes

Horizontal oscillator

normal?

i

Yes

vNo .

Check power

r— K

F901,

supply circuit

S/

U901, U902

No

Check H-sync pre-processor (U631,

31.468KHz) and related circuits

Jo »

Check horizontal 11 | U8Q11 TP3 oscillator ckt I |/

Check horizontal

, _ J \

Q801, T801

driver and output

Q802, T802

circuit.

V

C811, D802

3-8

I No raster

!

Raster appears when Contrast & Brightness set to maximum?

No

Yes

Adjust external Brightness, Contrast

controls

Power ckt, horizontal

deflection circuit

may be faulty

B+ voltage normal?

(+32V, +15V DC)

I

Yes

Horizontal drive

circuit output OK?

I

Yes

Ha-

Check power regulator circuit

U901, U902 F901, D901-D904 W02M

v No

Check horizontal

driver circuit

ld\ [ u631

1— y U801 Pin 8

Check horizontal

Q801, T801

driver and output

Q802, T802

circuit•

V

C811, D802

3-9

High voltage circuit and CRT circuit may

be defective.

Is high voltage

present in anode?

i

Yes

Is heater voltage

normal?

I

Yes

Is CRT electrode

voltages normal?

(G2 - +460V)

I

Yes

<

Is the CRT anode

voltgae (14KV) OK?

C

I

No

Check the CRT

]

Is pulse supplied to the H-out TR (Q802) collector?

No

Yes I

r '

Check FBT

{

Check the heater

circuit

______

j______

Check H-output circuit

No Check the voltage

>

----------

»

supplying circuits

Yes '

Check the video

circuit

3-10

No picture

i

Set Brightness,

Contrast controls to

maximum.

Input signal OK?

[

I

Yes

Check Video circuit

I

]

Video processor (U701)

output OK?

i

Yes

Contrast ckt input /

output voltages

normal?

i

Yes

Blanking circuit

input output voltages

normal?

Yes

Continued

next page ....

. No

Check signal source and signal cable

No

■X B+ (15V) normal?

Yes

Check Q701, Q702, Q703, Q704

No

Check power supply

No

Check Contrast

>

----------

►

peripheral ckts

No

Check blanking

>

----------

-

circuits

3-11

3-12

[

Faulty horizontal

circuit

[

I

No 14 KV present at

CRT anode

/ WaIWaveform present at

\ H-out TR collector?

No

I

<

H-out TR collector

bias voltage normal'

Horizontal output

transistor OK?

I

Yes

H-out transistor

input OK?

i

No

H-processor (U801)

output (pin 8) OK?

I

No

H-processor (U801)

input (pin 9) OK?

[

Check H

and H-s;

I

No

V Yes

High voltage circuit abnormal

]

No

Power supply abnormal

y NO

Replace horizontal output transistor

y Yes r

High voltage circuit

abnormal

Yes

Check H-processor peripheral circuits

Yes

-sync pre-processor

sync input

3-13

Continued from

previous page ...

No

H-drive transistor

OK?

I

Yes

<

H-processor (U801)

output (pin 8) OK?

I

No

/ H-processor (U801)

input (pin 9) OK?

No

, No

Check H-driver

transistor

]

v Yes

Check H-processor

/ *

peripheral circuits

Yes Replace H-processor

]

Check H-sync pre-processor and H-sync input

3-14

Trouble : Picture rolls diagonally.

[

Faulty

horizontal sync

~ r

H-sync present at

U631 pin 9?

I

Yes

+5 V DC present at

U631 pin 14?

^ No _

Check

H-sync

c - K

U631, K2A

input circuit

y NO ,

Check D631, power supply circuit

Yes

Check U631 and

peripheral circuits

Trouble : Only one horizontal line appears on screen.

Picture displayed only on the upper or lower part of the screen.

Faulty vertical deflection ckt

r

□

V-sync pre-processor

circuit normal?

I

Yes

Vertical oscillator

circuit normal?

[

I

Yes

Check deflection

yoke

. No .

Check vertical pre-processor

(U631, pin 1) and its 5V B+

No Check vertical processor (U601)

circuit and its B+ at pin 2

3-15

3.6. Adjustments and Tests

I. Test equipments and special tools

a. Volt-ohm-A meter (Sanwa FD-750C or equivalent) b. 30KV high voltage probe (HP34111A high voltage probe)

c. Oscilloscope (TEK2235 or equivalent) d. Signal generator (IBM PC with EGA card and ADI's

logical board)

e. Screwdriver (ADI special tool)

II. Adjustments

A. Picture size adjustment

1. Adjust H-Width (L801) so that the horizontal picture width may be :

DM-3014 : 240 mm + 3 mm DM-3015 : 250 mm + 3 mm

2. Adjust V-Size (VR602) so that the vertical picture height becomes :

DM-3014 : 180 mm + 3 mm DM-3015 : 190 mm + 3 mm

B. Focus adjustment

Adjust the focus VR (VR805 & VR803) so that the best

focus may be obtained over the entire display area.

C. Deflection yoke and centering rings

Loosen the deflection yoke clamp and carefully move the

yoke on the neck of picture tube as forward as possible. Rotate the yoke until the top and bottom edges of the raster are straight. Tighten the clamp center of the raster and eliminate the shaded corners by rotating the centering rings until the best effect is obtained.

D. Vertical Height and Linearity

Adjust the V-Linearity control (VR605) to obtain the

best linearity. Adjust the V-Size control (VR602, VR603 & VR604) to gain the most preferred picture. Rotate V-Hold control (VR601) completely clockwise or

counterclockwise to confirm that the picture rolls up or down at either extreme positions.

3-16

E. Sub-bright

Adjust the Brightness control (VR804) to maximum, then properly adjust the Sub-bright (VR806) until the back ground raster slightly appears.

3-17

3.7. Theory of Operation

I. Some DM-3014/3015 features are as follows:

A. IBM Personal System/2 compatible. B. Horizontal frequency : 35.468 KHz

Vertical frequency : 50'/ 60 / 70 Hz

Resolution : 350/400/480 lines

C. Video signal : Analog, 0 - 0.7 Vpp

monochrome signal

D. The external sync is provided through a D-sub connector

connected to the PS/2. The cable pin assignments are

as follows:

D-sub

5-P connector

(internal)

3-P connector

(internal)

Pin 2

#2 Analog video

Pin 5

#1 Control

Pin 7

#3 Shield gnd

Pin 12

#3 Ground

Pin 13

#5 H-sync

Pin 14 #4 V-sync

Shield

#2 Shield gnd #1 Double-shield gnd

E. The polarity of the H-sync and V-sync input determines

whether the resolution will be 350, 400 or 480 lines, according to the following table:

H-sync

V-sync

480 lines 400

lines

-

+

350

lines

+

—

* IBM Personal System/2 is a registered trademark

of International Business Machines Corp.

3-18

F. The H-sync pre-processor (U631) outputs a positive

polarity H-sync to the horizontal processor IC (U801). U801 output at pin 3 drives Q801 (driver circuit) and Q802 (output stage).

G. The V-sync pre-processor (U631) outputs a positive

polarity V-sync to trigger TDA1170N (U601), which in

turn directly drives the vertical yoke.

H. The video analog signal, after being processed by

M51392, is sent to the CRT cathode via the video output

stage.

I. The FBT in the horizontal output stage also controls

the focus, brightness, B2, Gl, G2 and the white pattern circuits.

J. The AC supply voltage is 110V/60Hz or 220V/50Hz

selectable through internal jumper settings. The power supply DC output supplies 15V and 32V to the main board and the CRT board.

II. H-sync Pre-processor

The H-sync input, both positive and negative, passes

through this circuit and produces a positive H-sync at the

circuit output.

3-19

A

B & C

D

Hi

III. Horizontal Processor IC (TDA1180)

A. The TDA1180 pin 1 connects to a positive supply of

approximately 12 volts.

B. Pin 3 outputs a pulse of less than 50% duty cycle to

drive the horizontal driver circuit and horizontal output stage.

C. Pin 5 is the phase shift filter. The TDA1180 compares

the flyback pulse at pin 6 with its internal oscillator waveform to regulate the output pulse phase with the aid of a control current input at pin 5.

D. Pin 6 takes the flyback pulse, limited to suitable

values by an external resistor, to perform phase shift

control.

E. Pin 8 is the sync separator for the H-sync input.

F. Pins 13, 14 and.15 make up the oscillator control

circuit with pin 14 connected to the oscillator capacitor and pin 13 acting as the control current output. Pin 15 is the control current input.

Adjusting VR809 limits pin 15 input current to control

the H-hold.

3-20

IV. Horizontal Output Stage

The horizontal output stage is made up of Q802, FBT, C811

and D802. The yoke, L801, L802 and C810 are the loading elements. L801 controls the horizontal width. The

linearity coil (L802), together with C810 and Cs, is used to control horizontal linearity. The 32V B+ at FBT pin 6 passes through L803 and C814 while FBT pin 7 produces an output of about 300V.

V . V-sync Pre-processor

The V-sync input may either be positive or negative. Operating in the same manner as the H-sync pre-processor,

the V-sync pre-processor produces a positive polarity sync at its output. A 15 Vpp V-sync is produced after Q621 and

Q622.

3-21

VI. Vertical Processor IC

A. Input sync and oscillator

TDA1170N pin 6 and 9 control the free-running

oscillator frequency when connected to VR and Cose. Pin 8 is the normal input used to trigger the output

frequency. However, the monitor utilizes a vertical

frequency of 50-70 Hz and can not be fully controlled

by using pin 8 as triggering. The solution is to use

pin 9 to force trigger the oscillator frequency. The timing chart is as follows:

3-22

B. V-size control

The external VR connected to pin 7 controls V-size. As the VR is adjusted to minimum, the ramp wave generator

output at pin 12 also decreases. Adjusting VR to maximum reverses the above conditions.

When operating under the same frequency with the VR

fixed, the monitor would have its smallest display size- occuring at 350 line resolution and the largest display size at 480 line resolution. To have uniform display size for all 350/400/480 line resolutions, three VRs with different values are used to control the V-size. The VR controlling the 350 line resolution has the smallest value while that controlling the 480 line resolution has the largest value. The control is achieved as follows:

3-23

Resolution H-sync

V-sync

A/B C/D D632

D633

VR (tot)

480

-

Hi

Hi Off Off

VR602 + VR604 max

400

+

Hi

Lo

Off On

VR602 +

VR604||VR603

350 +

-

Lo

Hi On Off

VR602 min

Adjustment procedures:

1. 350 lines - adjust VR602

2. 480 lines - adjust VR604

3. 400 lines - adjust VR603

C. V-linearity

Pin 12 is the ramp generator with output at pin 1. The output connects to VR605, R609, C608 and C609 to

control vertical linearity.

D. Vertical output

Pin 10 inputs the ramp output waveform to the IC's internal pre-amplifier and power amplifier, whose

output appears at pin 4 in turn. Pin 11 is used for compensation.

E. Pin 2 and 5 connects a DC supply voltage of about 14V.

VII. Video Circuit

A. White pattern control

With no sync signal applied, the monitor should display

an all-white pattern. The operation is as follows:

3-24

Test points

A

Q832 S2 B

Sync cable connected to PS/2

Lo Off

floating

video sync

Sync cable

not connected to PS/2

n n

active

n n

white pattern

sync

3-25

B. Clamp pulse circuit

from FBT pin 8

WWV-

R719

. Blanking circuit

SI, taken from TDA1170N pin 3, passes through D702, C716 to prolong the input pulse. The blanking signal is then sent to Q707 which produces a 50 Vpp blanking signal after amplification.

3-26

D. The M51392 input signal may be taken from either S2 or

VA (video analog). VR701 limits the signal Vpp as C701 and C702 couples it to pin 1. Pin 4 provides contrast control using an external DC. Pin 9 is the clamp level input clamped at around 10V.

E. The M51392 output at pin 8, passing through Q701, is

sent to Q703, Q704 for amplification. Q702 provides negative feedback to pin 11.

VIII. Power Supply

A. The input supply voltage is 110V/220V selectable.

B. The power board is divided into two sections. The

circuit formed by LM317 is capable of supplying 20-35V DC, and is normally set at +32V. The other is the circuit associated with 7815, which supplies a regulated 15V DC.

C. The +30V is supplied only to the FBT in the horizontal

oputput stage while the remaining circuits are

supplied with +15V.

3-27

Section 4

Block Diagram

1. DM-3014 block diagram

4-1

I

ro

I

-P*

CO

Section 5

Schematic Diagram

1. DM-3014 deflection unit

2. DM-3014 video and power unit

5-1

z

A

rtev

_

AO Z CO R P .

B 1 4 - 0 8 8 - 0 0 1

13. 1 9 0 7 IShaot 1 o f

O ocu m a nt Nua ib a r

DM-3014 deflection unit

0

T l t l •

S ize

G U JL

cniN)

5-3

i

cn

Section 6 ===============

Component Layout

March,1988

REP LACE O N U WITH SA ME TYPE ANO RATING OF

F U S E

BLACK 220V TP I MOV TP2

V R80 4 ®

6-2

Disassembly and Assembly

This section intentionally left blank

7-2

Section 8 ===============

Sub-assembly List

Spare parts List

=== Section 9 =========================

The following parts are not available for ordering:

1. Alloys, resins, adhesives, tapes

2* Carbon resistors less than 1/4 watt

3. Ceramic capacitors less than 50V

4. Electrolytic capacitors less than 50V, lOOuF

5. Jumpers, tie wirings, screws, labels, and bare PCB

6. Housing and mechanical parts

9-1

PAGE : 00002

DATE : 03/24 /88

Q703 Q8 0 1

Q702

Q705

Q706

Q707

D702

D701

R717

R732

VR701

C713

C 7 19

C713

C712

C720

D708

D70 5 D 706

COST

STAND AR D HATER IAt

*****

.4

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1.6

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ADI CORP.

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MODEL : DM -3 O1 4/ S0 O MODULE : PW R+ MO NI TO R BOARD

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TR. POWER * BD139 2.0000

TR. S- SIGH AL* 23C 13 15 Y 1.0000

47

43

46

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RES. M-O XID E-S * 3W* 320 OHM J 1.0000

CAP. ELECT* 1 00U F 100V 1.0000

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SVR. H-M*-S* IK* V20 34 S L3 1.0000

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CONT INUE D

TO

62

61

60

PAGE : 00001

DATE : 03 / 24 /3 8

D 904

C 904

Q832

D83 1

VR 806

D 903

U902

U90 1

D 90 1 D 902

BR901

D 906

VR901

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C908

C 9 0 1 C 902

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1.6

1.2

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D 805

0302

Q 8 3 1

Q621 Q62 2

D602 D 804

0803

1.6

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1.6

1.2

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1 .2

1 .6

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1.6

2.4

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D 633

L801

L802

L803

T802

D63 1

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D802

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D832

D 8 01

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2.0

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1.6

9.9

1 .6

9.9

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1.2

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1.2

VR604

VR 803

VR 605 VR801

C602

C816

C310

C809

VR 802

VR 602 V R603

VR 805

C817

.8

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1.2

1.6

1.2

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1 .2

C823

C821

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1 .6

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C822

C811

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CAP. PPN/ K/ 0.004 7UF 630V

CAP. C ERA MIC / B K/ 0. 01UF 1KV

CAP. ELECT/ BP/ 3.3UF 50V,

CAP. CE RAM IC / B K/ 390P 500V

40

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37

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IC LINE AR/ M 51 39 2P

RES. M- OXI DE -S, 2W/ 100 OHM J

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44

45

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03/ 24/ 38

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SYNC

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VR 702

1.2

9.1

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12.00

11.00

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2.50

AC

3.00 AC

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AC

2.50

ADI CORP. DATE

* * * * * ST ANDARD M AT ER IAL COST ***** PAGE

0 TV

1.0000

SUBASS 'NO : E20 11

MODULE : ELEC TR IC AL PA RTS

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63 CRT, 14" P/W, M32 EAA12 WD

65 YOKE, 1-225-0 41

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66 SW. SEESA W, D.P.S.T.

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67 LED, GREEN , 2.0x 7.0

71 SL.VR. PCB.-C , 5K, V J20 13 PVN 5B

68 .4

68.2

64.2

64.1 POWER TRANS., UL/CSA USE

68.3

68. 1

Appendix

1. List of major ICs

a. TDA1170N b. TDA1180P c. 7ALS86 d. LM317

e. M51392

f. HA17815

2. Spare Parts Ordering Form

3. Readers' Comment Form

The TDA1170N is a monolithic integrated circuit packaged in a

12-lead quad in-line plastic package. It is intended for use in black and white and color TV receivers and its low noise characteristics make it particularly suitable for monitor applications.

Functions incorporated in the TDA1170N are:

o synchronization circuit o oscillator and ramp generator o high power gain amplifier

o flyback generator o voltage regulator

1. Absolute Maximum Ratings

A. TDA1170N Low-noise TV Vertical Deflection System

V,

Supply voltage at pin 2

35

V

V4, V5

Flyback peak voltage

60

V

V10

Power amplifier input voltage

f ♦ 10

V

1-0.5

V

*o

Output peak current (non repetitive) at t = 2 msec

2

A

■o

Output peak current at f = 50 Hz t < 10 ptsec

2.5

A

*o

Output peak current at f = 50 Hz t > 10 /ttec 1.5 A

*3

Pin 3 DC current at V4 < V2

100

mA

*3

Pin 3 peak to peak flyback current for f = 50 Hz. tny <1.5 msec

1.8

A

»•

Pin 8 current

± 20

mA

f\ol

Power dissipation: at Ttab = 90°C

5

W

at Lmb* 80~C (free air)

1

W

Storage and junction temperature -40 to 150

°C

2. Connection and Block Diagram

■*mp

OCNCRAfOft

10-1

3. TDA1170N Electrical Characteristics

*2

Pin 2 quiescent current

l3 -0

7 14

mA

1b

•s

Pin 5 quiescent current

l4 -0

8

15 mA

1b

-f9

Oscillator bias current

>

■

at

>

0.1

1

PA

la

-'io

Amplifier input bias current

V10- IV

1

7 pA

lb

12

Ramp generator bias

current

V12* 0 0.02 0.3

PA la

-'12

Ramp generator current

I7 «.20*iA V12-0

19

20

24 pA

1b

a i12

*12

Ramp generator non-linearity

aV 12*0to 12V l7 - 20 jjA

0.2

1

%

1b

v,

Supply voltage range

10 35

V

-

VI

Pin 1 saturation voltage to ground

Ij-lm A

1

1.4

V

-

V3

Pin 3 saturation voltage 10 ground

l3 • 10 mA

. 1.7 2.6

V

la

V4

Quiescent output voltage

V,» 10V R1-10KU R2 - 10 K a

4.17

4.4

4.63

V

la

V,-35V R1-30K U R2 - 10 KI1

8.35

8.8

9.25

V

la

V4L

Output saturation voltage

to ground

-l4- 0.1 A

0.9 1.2

V

1c

-l4» 0.8A

1.9 2.3

V

1c

V4H

Output saturation voltage to supply

l4 » 0.1 A

1.4

2.1

V

1d

l4 - 0.8A

2.8 3.2

V Id

V6

Regulated voltage at pin 6

6.1

6.5

6.9

V

1b

V7 Regulated voltage at pin 7

l7 * 20pA

6.2

6.6

7

V

lb

AV6

A\y m 1H ia ocw

1

mV/V

1b

AV,

AVS with supply voltage

QVj" 1U lO Jj V

V10

Amplifier input reference voltage

2.07

22

2.3

V

-

R8

Pin 8 input resistance V8 < 0.4V

1

MU la

10-2

B. TDA1180 TV Horizontal Processor

The TDA1180P is a horizontal processor circuit for black & white and color television receivers. It is a monolithic

integrated circuit encapsulated in a 16-lead dual-in-line plastic package with the following functions:

o Noise gated horizontal sync separator, o Noise gated vertical sync separator, o Horizontal oscillator with frequency range limiter, o Phase comparator between sync pulses and oscillator pulses

(PLL)•

o Phase comparator between flyback pulses and oscillator

pulses (PLL).

o Loop gain and time constant switching,

o Composite blanking and key pulse generator, o Protection circuits. o Output stages with high current capability.

1. Absolute Maximum Ratings

V,

v 2

V4 V,

V9 Vi,

l2 l3 Is l7 >10

P.O.

Supply voltage (pin 1)

Voltage at pin 2 Voltage at pin 4 v,

Voltage at pin 8 Voltage at pin 9

Voltage at pin 11 Pin 2 peak current Pin 3 peak current Pin 6 current Pin 7 current Pin 10 current

Total power dissipation at Tamb < 70°C

Storage and junction temperature

-40 to 150

15 18

( V* l -6

(+6 l- 6

v,

0.5 30 20 30

V V

A

1

A mA mA mA

W

1

°C

2. Connection Diagram

voltage

OUlPUT • [ OUTPUT • |

PROTECTION f CMCUU INPUT 1

PHASE SHIFTER |

FILTER 1 FUBACK INPUT |

key ano Blank |

PULSE OUl PUT 1

S»NC. SEPARATOR I INPUT 1

1 •

*

S 6

»

16

] GNO 10SC. CONTROL

IS

J CURRENT

U

) OSCLLATOR 1CONT CURRENT

13

(OUTPUT 1 TIME CONSTANT

W

1 SWITCH 1 COINCIDENCE

11

1 OCT ECTOR | VERTICAL

• 0

* Sync OUTPUT 1 vertical Sync.

1 SEPARATOR IN

10-3

3. TDA1180P Block Diagram

4. Application Information

Pin 1 : positive supply

o The operating supply voltage of the device ranges

from 10V to 13.2V.

Pin 2 and 3 : output

o The outputs of TDA1180P are suitable for driving

transistor output stages, delivering positive pulses

at pin 3 and negative pulses at pin 2.

The negative pulse is used to directly drive an

output stage while the positive pulse is used when an additional driver stage is required.

10-4

The rise and fall time of the output pulses are about 150 ns to avoid interference due to radiation and the output stages are internally protected against short circuits.

Pin 4 : protection circuit input

o The IC output pulses at pin 2 and 3 are shut off by

connecting pin 4 to ground, protecting the final stages from overloads.

The output pulses are also shut off when the power

supply voltage falls below 4V.

Pin 5 : phase shift filter

o To compensate the delay introduced by the final

stages, the flyback pulses to pin 6 and the

oscillator waveform are compared in the oscillator-

flyback pulse comparator.

The comparison result is a control current which,

after it has been filtered by the external capacitor connected to pin 5, is sent to a phase shifter

which regulates the phase of the output pulses •

The maximum phase shift allowable is:

td = tp-tf

where tf is the flyback pulse duration.

Pin 5 has high input and output resistance.

Pin 6 : flyback input

o The flyback pulse drives the high impedance input

through a resistor to limit the input current to suitable maximum values.

The flyback input pulses are porocessed by a double

threshold circuit. The circuit generates the blanking pulses by sensing the low level flyback voltage and pulses to drive the phase comparator by

sensing the high level flyback voltage. ~In this

manner, phase jitter normally associated with the

flyback pulse is avoided.

Pin 7 : key and blanking pulse output

o The key pulse for taking out the burst from the

chrominance signal is generated from the oscillator

10-5

ramp and has a fixed position with respect to the sync. This key pulse is then added internally to the blanking pulse obtained by correctly forming the flyback pulse present at pin 6.

The sum of the two signals is a sandcastle pulse available on low impedance at output pin 7.

Pin 8 and 9 : sync separator inputs

o The video signal is applied by two distinct biasing

networks to the vertical and horizontal sync

separators (pins 8 and 9) of the IC.

The horizontal sync separator takes the sync pulses out of the video signal and makes them available to the rest of the circuit for further processing.

An amplitude detector connected to pin 8 blocks operation of the sync separator when interference or noise peak exceeds a certain preset value.

Pin 10 : vertical sync output

o The vertical sync pulse, obtained by internal

integration of the synchronization signal, is available at this output. The output impedacne is normally 10K and its lowest amplitude without load

is 11V.

Pin 11 : coincidence detector

o A gate pulse 7 usee wide, whose phase position is

centered on the horizontal synchronization, is taken form the horizontal oscillator waveform. This gate pulse performs two functions. First, it controls a

logic block which permits the sync to reach the oscillator-sync phase comparator only for as long as its duration. Second, it allows oscillator latching and delatching.

This function is obtained by a coincidence detector which compares the phase of the gate pulses with

that of the sync.

When the two signals are not accurately aligned in

time the oscillator is not synchronized. In this case the oscillator acts on the logic block to eliminate its filtering effect and on the time constant block to establish a high impedance on pin

12.

10-6

The time constant switching block also acts on the oscillator-sync phase detector to increase its

sensitivity and the loop gain of the synchronizing system.

Pin 12 : time constant switch (see pin 11)

Pin 13 : control current output

o The oscillator is synchronized by comparing its

wavefrom phase with that of the sync pulses in the

oscillator-sync phase comparator and sending its output current to pin 15 of the oscillator after it has been filtered properly by an external low-pass

circuit•

Pin 14 : oscillator (see pin 13)

Pin 15 : oscillator control current input (see pin 13)

Pin 16 : ground

5. TDA1180P Mechanical Data

6.4"

04

7.6

10-7

C. 74LS86 Quad 2-input Exclusive OR Gate

SYMBOL

Vcc

Ta

>OH

k)L

1. Operating Ranges

PARAMETER

Supply Voltage Operating Ambient Temperature Range Output Current — High

Output Current — Low

54 74

54,74

54 74

IN A L L H H H

B L L H H L

MIN

4.5 5.0

4.75 5.0

-55 25 0 25

OUT

2

H L

TYP

MAX UNIT

5.5

5.25 125 °c

70

-0.4

4.0

mA

8.0

V

2. DC Characteristics over Operating Temperature Range

SYMBOL PARAMETER

V|H

V|L

VIK VOH

VOL

'IH 'IL

*os

•cc

Input HIGH Voltage

Input LOW Voltage Input Clamp Diode Voltage

Output HIGH Voltage

Output LOW Voltage

Input HIGH Current Input LOW Current -0.8

Short Circuit Current Power Supply Current

LIMITS

MIN

TYP

2.0 V

54 74 0.8

-0.65

54 2.5

3.5

74 2.7 3.5

54.74 74

0.25 0.4

0.35

-20

UNITS

MAX

0.7

-1.5 V

0.5 40

0.2

^A mA mA

10

mA mA

-100

TEST CONDITIONS

Guaranteed Input HIGH Voltage for All Inputs

Guaranteed Input LOW Voltage for

V

All Inputs VCC= min. I|N =-18 mA

V

VCc = MIN, lOH = MAX, V|n = V|H or V|i_ per Truth Table

V V V

lOL = mA

Iql = 8 0 mA

vCC=Vcc MIN,

VIN = V|L or V|H

per Truth Table

VCC = MAX. V|n — 2.7 V

Vcc = max, V|N = 7.0 V

Vcc = MAX, V|N = 0.4 V

Vcc = MAX Vcc = MAX

10-8

3. 74LS86 AC Characteristics

SYMBOL

«PLH »PHL

*PLH

•PHL

PARAMETER

Propagation Delay.

MIN

LIMITS

TYP

12 23

Other Input LOW 10 Propagation Delay.

Other Input HIGH

20 30

13

MAX

UNITS

17 VCC=5.0V 22

ns ns

TEST CONDITIONS

CL= 15 pF

10-9

D. LM317 3-terminal Adjustable Positive Voltage Regulator

The LM317 is an adjustable three-terminal positive voltage

regulator capable of supplying more than 1.5 A over an output

voltage range of 1.2 to 37V. The regulator is easy to use and requires only two, external resistor to set the output voltage. It uses an internal current limiter, thermal

shutdown, and safe area compensation, making it essentially blow-out proof.

The LM317 has wide variety of applications including local and on-card regulation. The device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and the output, the LM317 can be used as a precision current regulator.

1• Standard Application

* : Cin is required if the regulator is located at an

appreciable distance from the power supply filter.

** : Co is not needed for stability even though it does

improve transient response.

10-10

2. LM317 Maximum Ratings

Rating

Input-Output Voltage Differential

Power Dissipation

Operating Junction Temperature Range

LM117 LM2 17 LM3 17

Storage Temperature Range

3. LM317 Schematic Diagram

Sym bol

V ,-V 0

Pd

T j

"^stg

Value

40

Internally

Limited

-55 to +150

-25 to +150 0 to +125

-65 to +150

Unit Vdc

°c

10-11

4. LM317 Electrical Characteristics

LM317

Characteristic

Figure Symbol

Min

Typ

Max

Unit

Line Regulation (Note 3) 1

Re9line

__

0.01

0.04

•;jv

Ta - 25*C, 3.0 V « V,.Vq 40 V

Load Regulation (Note 3) 2

R*9load

Ta * 25*C. 10 mA « Iq * Imax

Vq « 5.0 V

—

5.0 25

mV

Vq > 5.0 V

—

0.1

0.5

*

<

o

Thermal Regulation (TA ■ - 25’C)

—

__

0.03

0.07

%/w

20 ms Pulse

Adjustment Pin Current

3

•Adi

—

50

100

n A

Adjustment Pin Current Change

1.2

■^Adj

—

0.2

5.0

mA

2.5 V < V|-Vq * 40 V

10 mA < l(. < Imax* ^0 * ^max

Reference Voltage (Note 4) 3

Vref

1.20

1.25 1.30

V

3.0 V < Vi-Vq < 40 V 10 mA < io < Imax* ^0 * ^max

Line Regulation (Note 3) 1

R®9line

—

0.02

0.07

w

3.0 V * V|-Vq < 40 V

Load Regulation (Note 3)

2

*«9load

10 nA < Iq c lmax

Vq « 5.0 V

—

20

70

mV

V0 » 5.0 V

—

0.3 . 1.5

if

<

O

Temperature Stability (T|0w * Tj « Thigh)

3

TS

—

0.7

—

o

>

i*

Minimum Load Current to Maintain Regulation (V|-Vo * 40 V)

3

iLmin

—

3.5 10

mA

Maximum Output Current

3

Imax

A

V,-V0 * 15 V. P0 4 Pmax

K and T Packages

1.5

2.2

—

H Package

V,-V0 - 40 V, PD « Pma*. TA « 25-C

0.5 0.8

—

K and T Packages

0.15

0.4

—

H Package

— 0.07 —

RMS Noise, % of Vq

—

N

__

0.003

—

% v0

Ta - 25*C. 10 Hi < f * 10 kHz

Ripple Rejection, Vq * 10 V. f * 120 Hz

4

RR

dB

(Note 51

Without CA<jj

—

65

—

CAdi - 10 mP

66 80

—

Long-Term Stability. Tj ■ Thigh (Note 6) 3 S

—

0.3

1.0

•/VI .0 k

TA ■ 25*C for Endpoint Measurements Hrs.

Thermal Resistance Junction to Case

—

R0JC

•GW

H Package (TO-39)

—

12

15

K Package (TO-3)

—

2.3

3.0

T Package (TO-220)

—

5.0

—

NOTES: (1) T|ow - -55*C for LM117 Thigh - + 150*C for LMl 17

- -25*C for LM217 - + 150*C for LM217

- 0*C for LM317 - + 125*C for LM317

(2) Imax - 15 A for K (TO-3) and T (TO-220) Packages

- 0.5 A for H (TO-39) Package

Pmax - 20 W for K (TO-3) Package

- 20 W for T (TO-220) Package

- 2.0 W for H (TO-39) Package

(3) Load and line regulation are specified at constant

junction temperature. Changes in Vo due to heating

effects must be taken into account separately. Pulse testing with low duty cycle is used.

(4) Selected devices with tightened tolerance reference

voltage available.

(5) Ca DJ* when used, is connected between the

adjustment pin and ground.

(6) Since Long-Term Stability cannot be measured on

each device before shipment, this specification is an engineering estimate of average stability from lot to lot.

10-12

E. M51392P Video Amplifier

1. Pin Connections

Video input -

i

14 - Vcc

Brightness control -

2 13 - Bright pulse input

Ext compensation - 3 12

- Clamp pulse input

Contrast control -

4 11 - Feedback video input

NC -

5 10 - NC

Hold -

6 9 - Clamp level input

Ground - 7 8 - Video output

Absolute Maximum Ratings

iiiiiiniiiiiiiiiiiiiiiiiiiiii

n

iiiiii

iinii

ii

Signal Limits Unit

Supply voltage Vcc

14.4 V

Power dissipation

Pd 1.20 W

Operating temperature Topr

-20 to +75 C

Storage temperature

Tstg

-40 to +125 C

10-13

F. HA17815 Fixed Voltage Regulator

The HA17815 is a three-terminal, fixed voltage regulator providing 15 volts output voltage. When a heat sink is used, output current of up to 1 A will be available.

Three built-in protection circuits are included in the device: a curent limiter, a limiter of temperatures at chip junctions', and the other to limit internal power dissipations.

The TO-220A package enables easy mounting and radiation design like transistors.

1. HA17815 Pin Assignments

l

1- Input 2 - Common 3 - Output

[JT-220AB I

1 2

2. Absolute Maximum Ratings

Item | Symbol |

Ratings

Input voltage |

Vin |

35 Volts

Power dissipation | PT |

15 Watts

Operating ambient Topr

-20 to +75 C

temperature

Operating junction 1

1 Tj

-20 to +125 C

temperature

Storage temperature

1 Tstg

| -55 to +125 C

10-14

3. HA17815 Typical Connecting Circuit

, 1

HA17815

3 # .

in Z“ C

2

__

IC

4. HA17815 Electrical Characteristics

Item || Symbol |

| Test conditions | Min |

L J

l Typ |

L J

Max |

Unit

L. . .

Output voltage

Vout

Tj - 25 C

1 1

14.4

15.0

“— —— i

15.6

r “

V

7V < Vin < 30V 5mA < lout < 1.0A Pt 15 watts

14.25

—

15.75

V

Line regulation

SVo

line

Tj 25 C 17.5V < Vin < 30V

20V < Vin < 26 V

11

3

300 150

mV mV

-+•

Load regulation

Quiescent current

SVo Tj * 25 C I 5 mA < lout < 1.5A

load 250mA <lout <750mA

I iq I

+

------

+-

Quiescent current I fclq

change |

12 300 mV

_ _ - I 4 | 150 I mV

--------+----------------------------------+----------h----------1—------

+----------

25 C | - | 4.A | 8.0 | mA

17.5V < Vin _< 30 V - - 1.0 mA

5 mA < lout < 1.0A - - 0.5 I mA

Tj

Output noise

voltage

Va Ta - 25C, 10Hz < f < lOOKhz 90

uV

-+

---------

+-

I f = 120Hz

-+ ---------------h------------+

I 54 I 70

Ripple rejection Rrej ratio

dB

H

----

+-

I 2.0 |

-+

---

1~

Voltage drop | Vdrop | lout *» 1.0A, Tj * 25 C

---------------+------+---------

h----------

Output resistance | Rout | f

-----------------h

------

+—

lKHz

19

Output short circuit current

Ios

Tj » 25 C

230

mA

Peak output current

Io peak

Tj « 25 C

2.1

Temperature

SVout/

lout - 5mA, 0 C < Tj < 125 C

-1.0

mV/ C coefficient of output voltage

Tj

10-15

5. Application Note

The HA17815 eliminates external compensating circuits and employs easy mounting and radiation design using

transistor-like TO-220AB package.

Output current above 1A is available when using a heat

sink. To protect the device from destruction, these protective circuits — a current limiter, one against

load short circuits, and one to control the operating junction temperatures — are built in.

Block Diagram of HA17815.

10-16

o Commodore

Technical Training

Friedrich-Seele-StraGe 10

3300 Braunschweig

Tel.: (0531) 89 5063 • Fax: (0531) 857 74

V.

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Commodore 1403 Monitor Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual