Rosen RVP-9800 User manual

SERVICE MANUAL
VIDEO CASSETTE PLAYER
RVP-9800
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE "SAFETY
PRECAUTIONS", IN THIS MANUAL.
VIDEO CASSETTE PLAYER RVP-9800
Rosen Products, Inc.
4678 Isabelle Street
P.O. Box 21636
Eugene, OR 97402
[phone]
Fax : [phone]

1
TABLE OF CONTENTS
SAFETY&PRECAUTIONS................................................................................................ 2
SPECIFICATIONS ......................................................................................................... 3
IDENTIFICATION AND OPERATION OF CONTROLS ........................................................ 4
CABINET DISASSEMBLY ................................................................................................ 6
COVER TOP.......................................................................................................................................6
COVER BOTTOM................................................................................................................................6
PANEL FRONT AS................................................................................................................................7
CIRCUIT BOARD DISASSEMBLY..................................................................................... 8
PCB MAIN AS.....................................................................................................................................8
ELECTRICAL ADJUSTMENT...................................................................................................................12
CIRCUIT DIAGRAMS .................................................................................................... 13
CONNECTION DIAGRAM...................................................................................................................13
POWER CIRCUIT DIAGRAM.................................................................................................................14
SERVO SYSCON CIRCUIT DIAGRAM....................................................................................................16
VIDEO/NOR & AUDIO CIRCUIT DIAGRAM............................................................................................18
Hi-Fi/PRE-AMP CIRCUIT DIAGRAM.......................................................................................................20
A/V IN/OUT CIRCUIT DIAGRAM............................................................................................................21
COMPONENTS LOCATION GUIDE ON PCB .................................................................. 22
ELECTRICAL PARTS LIST................................................................................................ 24
DESCRIPTION OF THE MECHANISM.............................................................................. 33
MAINTENANCE AND CHECKING OF MAJOR SYSTEM.................................................... 42
DISASSEMBLY AND REPLACEMENT ............................................................................... 48
MECHANICAL ADJUSTMENT......................................................................................... 56
ADJUSTMENT OF TAPE TRANSPORTING SYSTEM............................................................. 59
EXPLODED VIEW OF DECK AREA AND PARTS LIST ......................................................... 67

2
SAFETY&PRECAUTIONS
SAFETY CHECK AFTER SERVING
Examine the area surrounding the repaired location for damage or deterioration. Observe that screw, parts and wires
have been returned to original positions. Afterwards, perform the following tests and conform the specified values in order
to verify compliance whit safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance between power cord plug prong and externally exposed parts of the set
(RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.)
isgreater than values given in table 1 below.
2. Dielectric strengthen test
Confirm specified dielectric strengthen between power cord plug prongs and exposed accessible parts of the set
(RF terminals, antenna terminals, video and audio input output terminals, microphone jack, ear phone jacks, etc.)
is greater than values given table 1.
3. Clearance distance
When replacing primary circuit component, confirm specified
clearance distance (d), (d’) between soldered terminals,
and between terminals and surrounding metallic parts. See
table below.
Rating for selected areas
* : Class II model only
NOTE : This table is unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality
4. Leakage current test
Confirm specified or lower leakage current between B(earth ground, power cord plug prongs) and externally exposed acces-
sibleparts(RFterminals,antennaterminals,videoandaudioinputoutputterminals,microphonejacks,earphonejacks,etc.)
Measuring method:(Power ON) Insert load Z between B(earth
ground, power cord plug prongs) and exposed accessible parts.
UseonAC voltmeter to measure across bothterminalsofload Z.
See figure2 and following table.
Leakage current ratings for selected are as
NOTE : This table is unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
AC Line Voltage Region Insulation
Resistance Dielectric Strength Clearance Distance(d),(d)
100V Japan P 1 MΩ /500V DC 1
§Ç AC 1min.
P 3
110 to 130V USA &
Canada -900V AC 1min.
P 3.2
* 110 to 130V
200 to 240V
Europe
Australia
Latin America
P 10 MΩ /500V DC 4
§Ç AC 1min.
P 6(d)
P 8(d’)
(a :Power cord)
AC Line Voltage Region Load Z Leakage Current(!)Clearance Distance(d),(d’)
100V Japan !O 1mA rms Exposed accessible parts
110 to 130V USA &Canada !O 0.5mA rms Exposed accessible parts
110 to 130V
200 to 240V Europe Australia
!O 0.7mA peak
!O 2mA dc Antenna earth terminals
!O 0.7mA peak
!O 2mA dc Other terminals
1k Ω
1.5k Ω
1.5k µ F
2k Ω
50k Ω

3
SPECIFICATIONS
* Design and specifications are subject to change without notice.
FORMAT VHS standard
PlaybackSystem
Video: 2 rotary heads helical scanning system
Luminance: FM azimuth Playback
Chroma: converted sub-carrier phase shifted playback
Audio: 2 rotary heads helical scanning system
Luminance: FM azimuth Playback
Chroma: converted sub-carrier phase shifted playback
Video Signal System NTSC type color signal
Tape width 12.65mm (1/2 inch)
Tape Speed SP : 33.35 mm/s LP : 16.67 mm/s
SLP : 11.12 mm/s
Maximum Playback Time 480min. with T-160 Video cassette tape (SLP mode)
FF/REWTime Less than 5 min
Power Input DC 12V 12W
Out level Video : VIDEO OUT jack 1.0Vp-p 75
Ω unbalanced
Audio : AUDIO OUT jack 10K Ω unbalanced
Video Horizontal Resolution More than 230 Lines
Signal-to-NoiseRatio Video:better than 43dB Audio:better than 40dB
HiFi Audio:better than 60dB
Operating Temperature 5
° C ~ 40 ° C (41 ° F ~ 104 ° F)
Weight 3.4kg : Net ( - -kg : Gross)
Dimensions 265 X 91X295 (WHD) mm

4
IDENTIFICATION AND OPERATION OF CONTROLS
1Casette compartment
2 Power key
When the power is supplied for the set, the power indi-
cator lamp will always light up in red.
The Power ON and Power OFF mode will be toggled by
pressing this key.
When the POWER is switched on, the power lamp will
light up in red and the other keys will light up in green.
3Stop/Eject key
Press this key to stop tape and once more to eject tape.
4Rewind/Review key
If this key is pressed in the PLAYBACK mode, the VCP
enters the reverse picture search mode. If pressed in
STOP mode, then the tape will rewind at high speed.
The REW indicator lamp will light up in orange.
5PLAY key
Pressthis keytoplaybackarecordedtape,ortorelease
special operations such as the search modes.
Intheplaybackmodethe playbackindicatorlamp willbe
lightin orange,andinAuto Trackingmode,thisindicator
lamp will blink.
6Fast Forward/ Cue key
If this key is pressed in the PLAYBACK mode, the VCP
enters the forward picture search mode. If pressed in
STOP mode, then the tape will fast forward at high
speed.
The FF indicator lamp will light up in orange.
7Cassette-In lamp
Whenthecassette is inserted, the CST-INlampwilllight
up in red.
8DEW lamp
This indicator will flash (if power is on) to indicate exces-
sive moisture has been inside of VCP. This unit will not
operate until it dries out sufficiently (the tape can be
ejected from the unit). When DEW mode has been acti-
vated, leave the unit on to allow it to dry out completely.
9Hi-Fi Lamps
In the Hi-Fi output mode, these lamps will light up in
green.
1 782
9 3 4 5 6

5
EXTERNAL VIEWS
1FUSE HOLDER
This main line fuse is accessible with the external fuse
holder simply by unscrewing the cap. If the main line
fuse should blow then replace the fuse with a proper
rated fuse (125V, 2A).
2DIN JACK
3VIDEO OUT
Connect this terminal to VIDEO IN terminal of your tele-
vision, using the RCA cord provided.
4AUDIO OUT L/R
Connect this terminal to AUDIO IN terminal of your tele-
vision, using the RCA cord provided.
5 6 DC JACK IN
Connect this jack to DC Source (DC 12V).
1PIN S.STATUS DATA OUT 6 PIN GND RIGHT RETURN
2PIN GND 7PIN VIDEO OUT
3PIN EXT. REMOTE DATA IN 8PIN AUDIO LEFT
4PIN GND 9PIN AUDIO RIGHT
5PIN GND LEFT RETURN
1 2 3
5 6
4

6
CABINET DISASSEMBLY
1. COVER TOP
Remove four screws (see Fig 2-1).
Lift the COVER TOP with holding the back of it and remove it.
Fig. 2-1
2. COVER BOTTOM
Remove one screw to remove the COVER BOTTOM (see Fig2-2).
Fig. 2-2

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3. PANEL FRONT AS.
Remove the COVER TOP. (See Fig 2-1)
Remove the COVER BOTTOM. (See Fig 2-2)
Press five stoppers in direction of the arrows to disengage - the top side of the panel front toward - to remove it
(See Fig 2-3).
Fig. 2-3

8
CIRCUIT BOARD DISASSEMBLY
1. PCB MAIN AS.
Remove six screws and disassemble the DECK mechanism.( see Fig 2-5A)
Presstwostoppers in direction ofthearrow (see Fig 2-5B)andseparate the Main Chassisfromthe Main PCB bylifting
the PCB (see Fig 2-5C).
(A) (B) (C)
Fig. 2-5

9
EXPLODED VIEW
1. MAIN CHASSIS ASS’Y

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2. PANEL FRONT ASS’Y

11
PACKING ASSEMBLY

12
ELECTRICAL ADJUSTMENT
1. SERVO-LOGIC CIRCUIT ADJUSTMENT METHOD
VIDEO HEAD SWITCHING POSITION
1Playback the test tape.
2Set the oscilloscope in the CHOP mode connect the CH1 to SW pulse PT01 3PIN the CH2 to VIDEO OUT with CH1
triggering.
3Adjust RV591 for the positive trigger until 6.5H ± 0.5H cycles before the vertical SYNC pulse.
Adj. Location Checking Point Measuring Equipment Mode Test Tape
RV591 PT01 3PIN
VIDEO OUT Oscilloscope Play DN-1
SWITCHING
SW30Hz
PULSE
VIDEO
OUTPUT
V. SYNC
6.5H 0.5H

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CIRCUIT DIAGRAMS
1. CONNECTION DIAGRAM

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2. POWER CIRCUIT DIAGRAM

15
1-1 IC504#1 PLAY MODE:AC
VOLT/DIV 500mV/DIV
TIME/DIV 5ms/DIV
1-4 P502 #3 PLAY MODE:DC
VOLT/DIV 1V/DIV
TIME/DIV 53ms/DIV
1-2 IC601#29 PLAY MODE:DC
VOLT/DIV 1V/DIV
TIME/DIV 5ms/DIV
1-5 IC501#30 PLAY MODE:DC
VOLT/DIV 1V/DIV
TIME/DIV 2m/DIV
1-3 P502 #6 PLAY MODE:DC
VOLT/DIV 1V/DIV
TIME/DIV 2ms/DIV

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3. SERVO SYSCON CIRCUIT DIAGRAM

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2-1 IC301 #29 PLAY MODE:AC
VOLT/DIV 100mV/DIV
TIME/DIV 10ms/DIV
2-4 IC301 #39 PLAY MODE:AC
VOLT/DIV 500mVV/DIV
TIME/DIV 10ms/DIV
2-2 IC302#1 PLAY MODE:AC
VOLT/DIV 100mV/DIV
TIME/DIV 10ms/DIV
2-5 IC301#6 PLAY MODE:AC
VOLT/DIV 50mV/DIV
TIME/DIV 0.5mS/DIV
2-3 IC302 #3 PLAY MODE:AC
VOLT/DIV 100mV/DIV
TIME/DIV 10ms/DIV
2-6 IC301 #59 PLAY MODE:AC
VOLT/DIV 200mV/DIV
TIME/DIV 0.5ms/DIV

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4. VIDEO / NOR & AUDIO CIRCUIT DIAGRAM

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2-1 IC401 #29 PLAY MODE:AC
VOLT/DIV 100mV/DIV
TIME/DIV 2ms/DIV
2-1 IC401#1 PLAY MODE:AC
VOLT/DIV 500mV/DIV
TIME/DIV 2ms/DIV