Philips MatchLine VR 1200/39 User manual

Contents
Chapter
1 Disassembly
2 Mechanism adjustments
3 Electrical adjustments
4 Charts and diagrams
5 Parts lists
Specification:
Video recording system: Rotary 6-head helical scan system
Antenna input Signal: PAL B/G, SECAM L
Antenna: UVF/UHF 75Ωexternal antenna terminal
Video Output Channel: UHF E21-E69 (adjustable between 21-69)
75Ωunbalanced
Power requirement: AC 220V – 240V ~(AUTO) 50/60Hz
Power consumption: ON - 25 watts
OFF - 4.8 watts
SAVE MODE - 3 watts
Operating temperature: + 5°C to + 40°C
Relativehumidity: 10% to 80%
Weight: 4.7kg
Dimensions: 435(W) x 102(H) x 342(D)mm
OC120039.pm5
VR1200/39
Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified be
used.
Video Cassette Recorder VR1200/39
Published by CFC2001PJVM Videq Service Department Printed in the Netherlands © Copyright reserved Subject to modification 3103 785 20950
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T120039
TABLE OF CONTENTS
Section Title Page
1. DISASSEMBLY
1.1 DISASSEMBLY FLOW CHART.............................................................................................................. 1-1
1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY ....................................................................... 1-1
1.3 DISASSEMBLY/ASSEMBLY METHOD ................................................................................................. 1-1
1.4 SERVICE POSITION .............................................................................................................................. 1-4
1.5 MECHANISM SERVICE MODE ............................................................................................................. 1-4
1.6 JIG RCU MODE ..................................................................................................................................... 1-5
1.7 SERVICING ITEMS RELATED TO VIDEO NAVIGATION ........................................................................ 1-5
1.7 EMERGENCY DISPLAY FUNCTION ...................................................................................................... 1-6
2. MECHANISM ADJUSTMENT
2.1 BEFORE STARTING REPAIR AND ADJUSTMENT ................................................................................ 2-1
2.2 REPLACEMENT OF MAJOR PARTS ..................................................................................................... 2-6
2.3 COMPATIBILITY ADJUSTMENT .................................................................................................................... 2-16
3. ELECTRICAL ADJUSTMENT
3.1 PRECAUTION ........................................................................................................................................ 3-1
3.2 SERVO CIRCUIT ................................................................................................................................... 3-2
3.3 VIDEO CIRCUIT ..................................................................................................................................... 3-2
3.4 AUDIO CIRCUIT ..................................................................................................................................... 3-4
3.5 SYSCON CIRCUIT ................................................................................................................................. 3-4
3.6 PAL/SECAM CONVERTER CIRCUIT .................................................................................................... 3-5
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM .............................................................................................................. 4-1
CIRCUIT BOARD NOTES ............................................................................................................................... 4-2
4.1 BOARD INTERCONNECTIONS .............................................................................................................. 4-3
4.2 MAIN (VIDEO/AUDIO) AND AUDIO ERASE SCHEMATIC DIAGRAMS .................................................. 4-5
4.3 MAIN (SYSCON) SCHEMATIC DIAGRAM ............................................................................................. 4-8
4.4 MAIN (SW.REG) SCHEMATIC DIAGRAM ............................................................................................. 4-11
4.5 MAIN (TUNER) SCHEMATIC DIAGRAM ................................................................................................ 4-13
4.6 MAIN (CONNECTION) SCHEMATIC DIAGRAM ..................................................................................... 4-15
4.7 2D DIGITAL SCHEMATIC DIAGRAM ..................................................................................................... 4-17
4.8 TERMINAL SCHEMATIC DIAGRAM ...................................................................................................... 4-19
4.9 DEMODULATOR SCHEMATIC DIAGRAM ............................................................................................. 4-21
4.10 S-SUB SCHEMATIC DIAGRAM ............................................................................................................ 4-23
4.11 DISPLAY, REC SAFETY, S-JACK AND JOG SCHEMATIC DIAGRAMS ................................................ 4-25
4.12 S-P CONVERTER SCHEMATIC DIAGRAM ........................................................................................... 4-27
4.13 SECAM SCHEMATIC DIAGRAM .......................................................................................................... 4-29
4.14 2D DIGITAL AND S-SUB CIRCUIT BOARDS ......................................................................................... 4-31
4.15 TERMINAL CIRCUIT BOARD ................................................................................................................ 4-32
4.16 MAIN CIRCUIT BOARD ......................................................................................................................... 4-33
4.17 S-P CONVERTER CIRCUIT BOARDS ................................................................................................... 4-36
4.18 DISPLAY, REC SAFETY, JACK, JOG, DEMODULATOR AND SECAM CIRCUIT BOARDS ...................4-37
4.19 REMOTE CONTROLLER SCHEMATIC DIAGRAM ................................................................................ 4-39
4.20 FDP GRID ASSIGNMENT AND ANODE CONNECTION ........................................................................ 4-40
4.21 WAVEFORMS ...................................................................................................................................... 4-41
4.22 VOLTAGE CHARTS .............................................................................................................................. 4-43
4.23 CPU PIN FUNCTION ............................................................................................................................. 4-45
4.24 SYSTEM CONTROL BLOCK DIAGRAM ............................................................................................... 4-47
4.25 VIDEO BLOCK DIAGRAM .................................................................................................................... 4-49
4.26 AUDIO BLOCK DIAGRAM .................................................................................................................... 4-53
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY ........................................................................................... 5-1
5.2 CABINET AND CHASSIS ASSEMBLY................................................................................................... 5-2
5.3 MECHANISM ASSEMBLY .................................................................................................................... 5-3
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1-1
[1] Top cover, D1 4(S1a),(S1b)
Bracket 2(S1c)
[2] Bottom cover D2 <Note 2a>
(Foot(rear)) 4(L2a)
(Foot assy) 4(L2b)
(S2a),2(S2b),4(L2c),
3(L2d)
[3] Front panel assembly D3 7(L3a), <Note 3a>
CN901(WR3a), <Note 3b>
CN3012(WR3b)
Jack board assembly 2(S3a)
Jog board assembly 2(S3b) <Note 3c>
[4] Drum assembly D4 CON1(WR4a), <Note 3a>
CN1(WR4b),
(S3a),(S3b),(S3c)
(Inertia plate) 4(L4a)
(Roller arm assy) (L4b),(P4)
(Cleaner assy) (L4c)
[5] Mechanism assembly D5 CN2001(WR5a), <Note 3a>
(S5a),(S5b),2(S5c) <Note 5a>
[6] Rec safety board D6 (L6a) <Note 6a>
assembly
Display board assembly CN7001(WR6a), <Note 3a>
CN7191(WR6b),
2(L6b),5(L6c)
[7] S/P Conv circuit D7 CN1601(WR7b) <Note 3a>
assembly CN1602(WR7a)
2(S7c)
Main board assembly 2(S7a), (S7b)
SECTION 1
DISASSEMBLY
1.3 Disassembly/assembly method
1.1 Disassembly flow chart
This flowchart lists the disassembling steps for the cabinet
parts and P.C. boards in order to gain access to item(s) to
be serviced. When reassembling, perform the step(s) in re-
verse order. Bend, route and dress the flat cables as they
were originally laid.
1.2
How to read the disassembly and assembly
Note:
• The bracketed ( ) WR of the connector symbol are as-
signed nos. in priority order and do not correspond to
those on the spare parts list.
(5) Adjustment information for installation
Top cover, Bracket
Bottom cover
Front panel assembly,
Jack board assembly,
Jog board assembly
Drum assembly
Mechanism assembly
Rec safety board assembly,
Display board assembly
Main board assembly
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Step/
Loc No.
Part Name Fig.
No. Point Note
-----------------
(1) (2) (3) (4) (5)
Step/
Loc No.
Part Name Fig.
No. Point Note
[1] Top cover, D1 4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
Bracket 2(S1c)
<Example>
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse order.
These numbers are also used as the identification (location) No.
of parts Figures.
(2) Part name to be removed or installed.
(3) Fig. No. showing procedure or part location.
(4) Identification of part to be removed, unhooked, unlocked,
released, unplugged, unclamped or unsoldered.
P= Spring, W= Washer, S= Screw, L= Locking tab, SD= Solder,
CN**(WR**)= Remove the wire (WR**) from the connector
(CN**).
<Note 2a>
• When attaching the Bottom cover, make sure that the earth plate of
the Bottom cover is passed through the hole of the Bottom chassis
and then touches the GND (Ground) on the Main board assembly.
<Note 3a>
• Be careful not to damage the connector and wire etc. during
connection and disconnection.
When connecting the wire to the connector, be careful with the
wire direction.
<Note 3b>
• When reattaching the Front panel assembly, make sure that
the door opener “a” of the Cassette holder assembly is low-
ered in position prior to the reinstallation.
<Note 3c>
• The Jog board assembly can be removed from the front panel rear
by pulling it gently toward the front after the screw (S3b) is removed.
<Note 5a>
• When it is required to remove the screws (S5a to S5b) retaining
the Mechanism assembly, please refer to the “Procedures for
Lowering the Cassette holder assembly”(See on page 1-2).
• When reattaching the Mechanism assembly to the Main board
assembly, take care not to damage the sensors and switch on
the Main board assembly.
• The wire (WR5a) has excess length that may be loose, as it is
quite long. After inserting the wire and connectors, the loose
portion of the wire should be taken up and accommodated be-
tween the A/C head base and the main deck.
<Note 6a>
• The Rec safety board assembly is attached to the Display board
assembly. It is therefore necessary to remove the Rec safety
board assembly before removing the Display board assembly.
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1-2
Fig. D1 Fig. D3
Fig. D2
Fig. 1
Fig. 2
Fig. 3
(A)
(B)
(S1a)
(S1a)
(S1a)
(S1b)
(S1c)
[1]
Top cover
[1]
Bracket
(L2c)
(L2c)
(L2d)
(L2b)
(L2a)
(L2a)
(L2b)
(S2b) (S2a)
Foot assy
Foot(rear)
Earth plate
<Note 2a>
[2]
Bottom cover
(L3a)
(L3a) CN901
WR3a
<Note 3a>
(L3a)
[3]
Front panel
assembly “a”<Note 3b>
Knob
(Jog/shuttle)
WR3b
<Note 3a>
CN3012
CN7192
Front panel
back side WR3a
(S3a)
(S3b)
WR3b
Jog board
assembly
<Note 3c>
Jack
board
assembly
Procedures for Lowering the Cassette holder assembly
As the mechanism of this unit is integrated with the Housing
assembly, the holder must be lowered and the two screws un-
screwed when removing the Mechanism assembly.
Procedures for Lowering the Cassette holder assembly
Turn the loading motor pulley in the direction as indicated by
Fig.2. As both (A) and (B) levers are lodged twice, push the
levers in the direction as indicated by Fig.3 to release them.
When pushing the levers, do it in the order of (A), (B), (B),
(A). When the holder has been lowered, turn the pulley until
the cassette holder is securely in place without allowing any
up/down movement.
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1-3
Fig. D4 Fig. D6
(S4b)
[4]
Drum
assembly
CN1
CON1
WR4a
<Note 3a>
(L4a)
(L4b)
(P4)
Roller arm
assy
Inertia plate
(L4c)
WR4b
<Note 3a>
Cleaner assy
(S4a)
(S4c)
Fig. D5 Fig. D7
(L5)
Spacer
<Note 5a>
(L5)
Spacer
<Note 5a>
Q3003
End sensor
<Note 5a>
Q3002
Start sensor
<Note 5a>
WR5a
<Note 3a>
<Note 5a>
A/C head base
WR5a
Note:
When installing the
Mechanism assembly,
secure the screws
(S5a to S5b) in the
order of a, b.
D3001
LED
<Note 5a> S3002
S cassette switch
<Note 5a>
(S5b)
<Note 5a>
(S5c)
(S5a) (S5c)
CN2001
[5]
Mechanism
assembly
(L6c)
CN7001
(L6b)
CN7191
(L6a)
[6]
Rec safety
board assembly
<Note 6a>
WR6b
<Note 3a>
WR6a
<Note 3a>
[6]
Display
board
assembly
(S7a)
CN1602
WR7b
<Note 3a>
WR7a
<Note 3a>
CN1601
[7]
Main board
assembly
(S7b)
Note:
When installing the Drum assembly, secure the screws (S4a to
S4c) in the order of a, b, c.
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