Roadstar DVR-9100 User 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
shock fire or other hazards

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 Temperature 41~95
Operating Humidity 5%~85%
OperatingAltitude -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
ADVANTAGESOFTHISPRODUCT
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)
 WMAAudio 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
Navigation Functions
 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
TROUBLESHOOTING
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
Yes
Yes
Yes
Yes
N
o
N
o
N
o
N
o

5
TROUBLESHOOTING
B. Power LED or VFD panel 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
TROUBLESHOOTING
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
OK
N
o
Yes
Yes

7
TROUBLESHOOTING
B. Remote Control Not Working Properly
C. System hangs when power on or during playback
Remote Control
erro
r
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 chan
g
e F/B
OK
System unstable
Check all cables are
in correct position.
Change M/B IC U25
else chan
g
e M/B
OK
N
o
Yes
N
o
Yes

8
TROUBLESHOOTING
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
loade
r
Change loader
Change M/B OK
The loader
can’t wor
k
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