Roadstar DVR-9100 Service Manual

Service Manual

- DVR-9100

R

DVR-9100

Service Manual

- DVR-9100

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caution

Many electrical and mechanical parts in this chassis have special safety characteristics. These safety characteristics often pass unnoticed and the protection afforded by them can not necessarily be obtained b

y

using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics asspecified in the parts list may create

1

CONTENTS

SPECIFICATIONS ........................................................................................

ADVANTAGES OF THISRODUCT....................................................................

TROUBLE SHOOTING ...................................................................................

WAVEFORMS ...............................................................................................

VOLTAGE CHARTS........................................................................................

CIRCUIT DIAGRAM.......................................................................................

BLOCK DIAGRAM..........................................................................................

PCB CIRCUIT BOARD....................................................................................

INSTRUMENT DISASSEMBLY........................................................................

02 03 04 25 28 32 46 47 72

2

SPECIFICATIONS

Power Supply AC 110V~230V / 50~60Hz Power Consumption 15~40W TV Signal System Standard PAL System Laser Semiconductor Laser,650nm Operating T emperature

41~95 Operating Humidity 5%~85% Operating Altitude -305~3048m Video Output Level

1V±0.2Vpp DVD Record Media DVD+RW,DVD-R DVD Playback DVD+RW , DVD+R , DVD-R Video Mode ,

DVD-RW Video , CD , CD-R , CD-RW , VCD ,

CD-DA(CD-Digital Audio) , SVCD(Super Video CD) Signal Source TV / CVBS / S-Video Chapter Creation Manually / Automatically Audio Format 2 ch Aspect Ratio 4:3 / 16:9 / Full Screen

Luminance Nonlinearity Distortion

≤ 5% Luminance Wave Distortion (Pulse,Bar)

≤ 10% Luminance S/N Ratio

≥ 60 Chrominance S/N Ratio

AM ≥ 60 , PM ≥ 55 Chrom Lum Time Delay (Pulse,Bar)

≤ 60ns DGDP

≤ 5% Video Recording Grade 1.691 / 2.537 / 3.382 / 5.073 / 9.716 Mbs

3

ADVANTAGES OF THIS PRODUCT

Playable Disc Formats

 DVD-Video

(single-sided/single-layer,single-sided/double-layer,double-sided/single-layer,double-sided/double-layer)

 DVD+RW , DVD+R , DVD-RW , DVD-R  Video-CD (1.0,1.1&2.0) SVCD , CD-DA , Mixed CD-DA (which is mixed data and audio)  DTS encoded Audio CD  MP3 Audio CD (generated by CD-R or CD-RW)  WMA Audio CD (generated by CD-R or CD-RW)  JPEG file disc  Kodak Picture disc  DVCD disc

Feature

 Support upgrading mpeg f/w via CD-R/CD-RW

Recordable Disc

 DVD+RW , DVD+R

Playback Functions

 Normal Playback  Pause/Step Forward(VCD,SVCD,DVD)  Slow Forward/Reverse(VCD,SVCD,DVD)

Recording Function

 Real-time recording of live TV input  Recording TV input at a given time and date  Recording audio/video material from camcorder, analog VCR or other A/V source  Simple video editing  Create home-based DVD discs that can be played on existing DVD players

Search Functions

 Scan Forward/Reverse  Skip Forward/Reverse

Navigati on Funct ions

 Title Menu  DVD Menu  Changeable multilingual audio track  Changeable multilingual subtitle and subtitle toggle  Changeable multi-story, multi-angle, parental control

Program Playback Functions

 VCD 1.0, 1.1 &2.0 without PBC, SVCD & CD-DA  Maximum of 99 programmable tracks

4

TROUBLE SHOOTING

1. POWER TEST

A. Power Board Test

N

o Power

Measure if 5V is

correct ?

Change Power Board

Measure if 3.3V

is correct ?

Change Power Board

Measure if AC3.9

is correct ?

Change Power Board

Measure if -27V

is correct ?

Change Power Board

Measure if 12V

is correct ?

Change Power Board

OK

N

o

Yes

NoNoNoN

o

5

TROUBLE SHOOTING

B. Power LED or VFD p anel error

Front board LED

b

roken or contrary

polar ?

No LED display

Change LED

Change

VFD panel

VFD panel broken

or pin shot ?

12 pins cable between

front board and main

board is connected well.

F/B IC U1

#27 is –27v? #17,38 is 5v?

#40 is low voltage?

Are there signals

outputting form IC U1

#15~26,28,29

on F/B?

Are there singles

outputting form IC U34

#195~197

on M/B?

OK

Are there signals

inputting to IC U1

#5,6,8,9 on F/B?

Change F/B IC U1

Change M/B IC U25 else change M/B

Yes

N

o

N

o

Yes

N

o

Yes

N

o

Yes

N

o

Yes

N

o

Yes

6

TROUBLE SHOOTING

2. PLAYBACK TEST

A. Loading Time Too Long

Loading error

40 pins

cable between M/B

and DVD loader is

connected well?

Change M/B

IC U25

Check resisters had contact that near M/B IC U8,U9,U25,U34.

If loading error.

Change M/B IC U25

or

Change M/B

OK

N

o

Yes

7

TROUBLE SHOOTING

B. Remote Control Not Working Properly

C. System hangs when power on or during playback

Remote Control

error

Check batteries of remote control are good.

If M/B IC U34

#4 is 5V

Change M/B IC U34

If

F/B IR receiver

U3 #1 is 5V & #3 is

outputting

signal

Change F/B U3 else change F/B

OK

System unstable

Check all cables are in correct position.

Change M/B IC U25

else change M/B

OK

N

o

Yes

N

o

Yes

8

TROUBLE SHOOTING

D. Power on noise or noisy loader

E. Reading DVD test discs N.G. or loader doesn’t function, scratches disc or bad

readability.

System noise

Check noise source

If noise is from

loader

Change loader

Change M/B

OK

The loader can’t work

Check all cables are in correct position.

If

M/B IC U25’s

firmware is the newest

version

Update M/B’s

firmware

else change M/B

Check resisters had contact that near M/B IC U8,U9,U25,U34 & J29.

If

Loader’s

firmware is the newest

version

Update loader’s

firmware

else change loader

OK

N

o

Yes

N

o

Yes

N

o

Yes

9

TROUBLE SHOOTING

3. VIDEO TEST

A. No signal input

N

o signal input

Check all cables are in correct position.

Check M/B J3 & J29 for proper soldering.

Check M/B IC U34 #151,154,157,160~162,205,208,211 whose 2 parts RLC for proper soldering

nd

If M/B IC U19 #5 is 27MHz

Change U19

Check connectors J4,J7 & J37 on the I/O board or any resistors, capacitors, & filter beat near these connectors for short circuits and bad solderin

g

.

OK

N

o

Yes

10

TROUBLE SHOOTING

B. AV input signal-no video output images or abnormal video output

AV input signal

error

Check all cables are in correct position.

Check

J45 or U2

on the main board or any

resistors for short circuit

Inspect the whole process

again according to procedure

B on Item 3

If the above actions

don’t work

Check pin 76 & pin 78~80 on U101 for short circuits.

OK

N

o

Yes

N

o

Yes

11

TROUBLE SHOOTING

C. TV tuner input-no video output images or abnormal video output

TV input signal

error

Use TV cable or signal generator to input TV signals.

Measure

the voltage on pin5

and pin6 on U103 with a

multimeter if it’s 5v or

32v

There’s a 5v but no a 32v

Check the resistors, capacitors and inductors near U103 for short circuits or bad soldering.

Check positions U3, U2 or U7 on the main board or any resistors near the IC for short circuit or bad soldering

Inspect the whole process again according to procedure B on item 3.

OK

N

o

Yes

12

TROUBLE SHOOTING

D. S-video input-no video output or abnormal video output or black and white video

E. Abnormal VCD/DVD/NF-200 im age or abnorm al displ ay of su btit le or abnorm al menu

selections display.

S-video signal

error

Check the S-video input/output cable to see if it’s in the right position and secured to the socket. Black and white images may

b

e caused be caused to the socket.

Check positions J37 & U2 on the main board or any resistors near the IC for short circuit or bad soldering

Inspect the whole process again according to procedure B on item 3.

OK

Display error

Check

positions U8, U9 &U34

or any resistors & capacitors near

the IC for short circuit or

bad soldering.

Check positions J3 & J29 for bad soldering and short circuits.

OK

Repair

N

o

Yes

13

TROUBLE SHOOTING

4. AUDIO TEST

A. Left and Right channel not functioning normally

Left & Right channel

error

Check positions J3, U12~U15 on the main board or any resistors and capacitors near the IC for short circuits and bad soldering.

If the main

board & I/O board

are properly connected

to

g

ether

Check

positions J1 & J36 on the I/O board or any resistors or capacitors nearby for short

circuit or bad

soldering.

OK

Change main board

Change I/O board

N

o

Yes

N

o

Yes

14

TROUBLE SHOOTING

B. The sound of AC-3 or SPDIF not functionally normally

Sound of AC-3 or SPDIF error

Check positions J3, U12~U15 on the main board or any resistors and capacitors near the IC for short circuits and bad soldering.

Check

positions J1 & J36 on the I/O board or any resistors or capacitors nearby for short

circuit or bad

soldering.

Check

If settings of an

Amplifier are correct? Check line

between amplifier and the

unit are connected

properly.

OK

Change I/O board

Replace the connection or setup the amplifier correctly.

N

o

Yes

N

o

Yes

15

TROUBLE SHOOTING

C. No sound in R/L audio inputs or abnormal sound.

R/L audio error

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Check

positions J3,J45,

U12~U15,U20,U21,U24

on the main board or any resistors

or capacitors nearby for short

circuit or bad

soldering.

Check if the main board and I/O board are

p

roperly connected together (check if the

pin assignments are correctly connected.)

Check

positions J1 & J36 on

the I/O board or any resistors

or capacitors nearby for short

circuit or bad soldering

or damage.

OK

Change I/O board

Change main board

N

o

Yes

N

o

Yes

16

TROUBLE SHOOTING

D. The sound of TV-tuner audio L/R channel not functionally normally

R/L audio error

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Use TV cable or signal generator to input TV signal.

Measure

the voltage on pin5

and pin6 on U103 with a

multimeter if it’s 5v or

32v

Check the resistors, capacitors and inductors near U103 for short circuits or bad soldering.

Check positions U3 and JP1 on the main board or any resistors near the IC for short circuit or bad soldering.

Use the oscilloscope to measure the voltage output on p in6 &pin7 on JP 1. The range o

f

the voltage is between 2~2.3V.(This is the standard value; need to compare the value with the customer’s request. So far, there’s another value about 1V.

Check

positions J3,J45,

U12~U15,U20,U21,U24

the main board or any resistors

or capacitors nearby for short

circuit or bad

soldering.

Change U103

Change the TV-tuner board on JP1

N

o

Yes

17

TROUBLE SHOOTING

Check if the main board and I/O board are properly connected together (check if the pin assignments are correctly connected.)

Check

positions J1 & J36 on the I/O board or any resistors or capacitors nearby for short

circuit or bad

soldering.

Repair

Change I/O board

OK

N

o

Yes

18

TROUBLE SHOOTING

E. TCD-731 or SBC444A or CBS or MP3 not sounding normally

Audio error

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Check

if the frequency

of pin5 on U19 located

on the main board

27 MHz

Change U19

Check

if the frequency

of pin64 on U34 located

on the main board

120MHz

Change U34

Check

if the frequency

of pinA19 & pinc17 on

U90 located on the

main board

108MHz

Change U90

Check

positions J12, J13, U34

and any resistors

or capacitors near the IC

for bad

soldering.

Repair

Check

positions J1 & J36 on the I/O board or any resistors or capacitors nearby for short

circuit or bad soldering

or damage.

OK

Repair

Change main board

Change I/O board

N

o

Yes

N

o

Yes

N

o

Yes

N

o

Yes

N

o

Yes

19

TROUBLE SHOOTING

5. RECORD TEST

A. AV input can’t record

AV input can’t

record

Check AV cord between source unit and DVD-R100 is connected properly or replace AV cord.

Check if the disc is a DVD+R or DVD+RW disc and there’s space available for recording. The data inside a DVD+RW disc can be erased usin

g

the function ke

y

A disc can record only one kind of format of data(NTSC/PAL). Check the format of data that’s already recorded on the disc(this is not necessary if the disc is new). A new disc must be formatted before use. This usually takes 2~3 minutes.

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Make sure the JUMP on J38 is inserted.

Check

positions U29

U70, U90, U99

on the main board or any resistors

or capacitors nearby for short

circuit or bad

soldering.

OK

Repair

Change main board

N

o

Yes

20

TROUBLE SHOOTING

B. S-video input can’t record

S-video input

can’t record

Check S-video cord between source unit and DVD-R100 is connected properly or replace AV cord.

Check if the disc is a DVD+R or DVD+RW disc and there’s space available for recording. The data inside a DVD+RW disc can be erased using the function key

A disc can record only one kind of format of data(NTSC/PAL). Check the format of data that’s already recorded on the disc(this is not necessary if the disc is new). A new disc must be formatted before use. This usually takes 2~3 minutes.

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Make sure the JUMP on J38 is inserted.

Check

positions U29

U70, U90, U99

on the main board or any resistors

or capacitors nearby for short

circuit or bad

soldering.

OK

Repair

Change main board

N

o

Yes

21

TROUBLE SHOOTING

C. TV-tuner input can’t record

TV-tuner input

can’t record

Check coaxial cable between source unit and DVD-R100 is connected properly or replace AV cord.

Check if the disc is a DVD+R or DVD+RW disc and there’s space available for recording. The data inside a DVD+RW disc can be erased using the function key

A disc can record only one kind of format of data(NTSC/PAL). Check the format of data that’s already recorded on the disc(this is not necessary if the disc is new). A new disc must be formatted before use. This usually takes 2~3 minutes.

Check the flat cable connected to the main board to see if it’s secured to the right socket.

Make sure the JUMP on J38 is inserted.

Check

positions U29

U70, U90, U99

on the main board or any resistors

or capacitors nearby for short

circuit or bad

soldering.

OK

Repair

Change main board

N

o

Yes

Roadstar DVR-9100 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual