Zenith ABV341 Schematic
DECK MECHANISM PARTS
LOCATIONS
• Top View..................................................5-1
• Top View(without Disc Tray) .................5-1
• Bottom View ...........................................5-1
DECK MECHANISM
DISASSEMBLY
1. Clamp Holder....................................5-2
1-1. Disc Clamp Assembly.......................5-2
1-1-1. Plate Clamp ..................................5-2
1-1-2. Magnet Clamp ..............................5-2
1-1-3. Clamp Upper.................................5-2
2. Tray Disc ...........................................5-2
3. Sled Base Assembly ........................5-3
3-1. Feed Gear Assembly........................5-3
3-2. Middle Gear Assembly......................5-3
3-3. Rack Gear Assembly........................5-3
4. Rear Rubber......................................5-3
5. Up/Down Frame Assembly..............5-4
6. Loading Belt......................................5-4
7. Pulley Gear .......................................5-4
8. Loading Gear ....................................5-4
9. Up/Down Guide.................................5-4
10. PWB Loading Assembly................5-4
11. Main Base........................................5-4
EXPLODED VIEW
1. Deck Mechanism Exploded View....5-5
CONTENTS
SECTION 5 MECHANISM OF DVD PART(NS MODEL)
5-1
DECK MECHANISM PARTS LOCATION
Starting No.
1
1, 2
1, 2, 3
1, 2, 3, 4
1
1, 6
1, 2, 6
1, 2, 6, 8
1, 2, 6, 8,
9
1, 2, 7
1, 2, 7
1, 2
1, 2 ,13
1, 2, 13, 14
1, 2, 7, 12, 13, 14
1, 2, 13
1, 2, 7, 12, 13,
14, 15, 16, 17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Holder
Clamp
Disc Clamp
Assembly
Plate Clamp
Magnet Clamp
Upper Clamp
Disc Tray
Sled Base Assembly
Feed Gear
Assembly
Middle
Gear
Gear Rack
Assembly
Rear Rubber
Up/Down
Faram Assembly
Loading Belt
Pulley Gear
Loading Gear
Up/Down Guide
PWB Loading
Assembly
Main Base
2 Screws,
2 Locking Tabs
4 Screws,
1 Connector
1 Locking Tabs
1 Screw
1 Screw
1 Locking Tab
1 Locking Tab
1 Locking Tab
1 Hook
2Screw
2 Locking Tabs
5-1
5-1
5-1
5-1
5-1
5-2
5-3
5-3
5-3
5-3
5-3
5-4
5-4
5-4
5-4
5-4
5-4
5-4
Bottom
Bottom
Procedure
Parts Fixing Type
Figure
Disass
embly
Note
When reassembling, perform the procedure in
reverse order.
The “Bottom” on Disassembly column of above
Table indicates the part should be disassembled
at the Bottom side.
• Top View (Without Tray)
• Bottom View
• Top View (With Tray)
5-2
DECK MECHANISM DISASSEMBLY
1.Holder Clamp (Fig. 5-1)
1) Release 1 Screws(S1).
2) Unhook 2 Locking Tabs(L1).
3) Lift up the Clamp Holder and then separate it from the
Base Main.
1-1. Disc Clamp Assembly
1) Place the Disc Clamp Assembly as Fig. (A)
2) Lift up the Disc Clamp Assembly in direction of
arrow(A).
3) Separate the Disc Clamp Assembly from the Clamp
Holder.
1-1-1. Clamp Plate
1) Turn the Clamp Plate to counterclockwise direction and
then lift up the Clamp Plate.
1-1-2. Magnet Clamp
1-1-3. Upper Clamp
2. Tray Disc (Fig. 5-2)
1) Insert and push a Driver in the emergency eject
hole(A) at the right side, or put the Driver on the
Lever(B) of the Gear Emergency and pull the Lever(B)
in direction of arrow so that the Disc Tray is ejected
about 15~20mm.
2) Pull the Disc Tray until it is separated from the Base
Main completely.
(S1)
(L1)
(L1)
(Fig. A)
(A)
CLAMP HOLDER
DISC CLAMP ASSEMBLY
CLAMP HOLDER
MAIN BASE
CLAMP HOLDER
PLATE CLAMP
MAGNET CLAMP
UPPER CLAMP
Fig. 5-1 Fig. 5-2
DISC TRAY
EMERGENCY EJECT HOLE
BOTTOM SIDE VIEW
MAIN BASE
(A)
LEVER
(B)
MAIN BASE
5-3
DECK MECHANISM DISASSEMBLY
3.Sled Base Assembly (Fig. 5-3)
1) Release 4 Screw(S2).
2) Disconnect the FFC Connector(C1)
3-1. Feed Gear Assembly
1) Unhook the Locking Tab(L2) in direction of arrow.
3-2. Middle Gear
3-3. Gear Assembly Rack
1) Release the Scerw(S3)
4. Rear Rubber (Fig. 5-3)
(L2)
(S2)
(S2)
(C1)
(S2)
(S2)
(BLACK)
(GREEN)
(S3)
(BLACK)
(GREEN)
MIDDLE GEAR
GEAR RACK ASSEMBLY
GENERAL
PICK UP
ASSEMBLY
FEED GEAR ASSEMBLY
MIDDLE GEAR
GEAR RACK ASSEMBLY
SPINDLE MOTOR ASSEMBLY
REAR RUBBER
SPINDLE MOTOR ASSEMBLY
GENERAL PICK UP ASSEMBLY
BASE PU(OUTSERT)
FEED GEAR ASSEMBLY
Fig. 5-3
5-4
DECK MECHANISM DISASSEMBLY
5. Up/Down Frame Assembly (Fig. 5-4)
Put the Main Base face down(Bottom Side)
1) Release the Screw(S4)
2) Unlock the Locking Tab(L3) in direction of arrow and
then lift up the Up/Down Frame Assembly to separate
it from the Base Main.
• When reassembling move the Up/Down Guide in direction
of arrow(C) until it is positioned as Fig.(C).
• When reassembling insert (A) portion of the Frame
Assembly Up/Down in the (B) portion of theUp/Down
Guide as Fig.(B)
6. Loading Belt (Fig. 5-4)
Put the Base Main on original position(Top Side)
7. pulley Gear (Fig. 5-4)
1) Unlock the Locking Tab(L4) in direction of arrow(B) and
then separate the Pulley Gear from the Base Main.
8. Loading Gear (Fig. 5-4)
9. Up/Down Guide (Fig. 5-4)
1) Move the Up/Down Guide in direction of arrow(A) as
Fig.(A)
2) Push the Locking Tab(L5) down and then lift up the
Up/Down Guide to separate it from the Base Main.
When reassembling place the Up/Down Guide as Fig.(C)
and move it in direction arrow(B) until it is locked by the
Locking Tab(L5). And confirm the Up/Down Guide as Fig.(A)
10. PWB Assembly Loading (Fig. 5-4)
Put the Main Base face down(Bottom Side)
1) Release 2 Screws(S5)
2) Unkool the Loading Motor Connector (C2) from the
Hook (H1) on the Base Main.
3) Unlock 2 Locking Tabs(L6) and separate the PWB
Loading Assembly from the Base Main.
11. Base Main(Fig. 5-4)
Note
Note
Note
Note
Note
(L4)
(L6)
(L5)
(A)
(B)
(B)
(A)
(A)
(B)
(C)
(S5)
(C2)
(S4)
FIG. (A)
FIG. (C)
FIG. (B)
(H1)
(L6)
(L6)
(L3)
LOADING GEAR
PULLEY GEAR
PWB LOADING ASSEMBLY
LOADING BELT
MAIN BASE
UP/DOWN GUIDE
UP/DOWN GUIDE
UP/DOWN FRAME ASSEMBLY
MAIN BASE
UP/DOWN GUIDE
UP/DOWN GUIDE
Fig. 5-4
EXPLODED VIEWS
1. Deck Mechanism Exploded View
A01
A26
008
009
016
A03
010
A02
014
017
015
431
431
011
011A
430
013
432
026
430
430
012A
430
012
430
012
429
004
001
003
002
012A
018
020
429
5-5 5-6
EXPLODED VIEW
1. Deck Mechanism Exploded View .................................................................................5-1
CONTENTS
SECTION 5 MECHANISM OF DVD PART(MTK MODEL)
EXPLODED VIEWS
5-1
429
429
026
010
018
013
014
017
015
015A
011
430
431
011A
012
004
001
002
003
A01
A26
A02
020
430
430
430
430
012
021
433
433
012
012
028
022
432
024
A03
025
030
015B
015C
435
029
031
431
431
431
024A
024A
024B
1. DECK Mechanism Exploded View
DECK MECHANISM PARTS
LOCATIONS
• Top View . . . . . . . . . . . . . . . . . . . . . . . . .4-1
• Bottom View . . . . . . . . . . . . . . . . . . . . . . .4-1
DECK MECHANISM DISASSEMBLY
1. Drum Assembly . . . . . . . . . . . . . . . . . . .4-2
2. Top Plate Assembly . . . . . . . . . . . . . . . .4-4
3. CST Holder Assembly . . . . . . . . . . . . . .4-4
4. Door Opener . . . . . . . . . . . . . . . . . . . . .4-4
5. L/D Motor Bracket Assembly . . . . . . . . .4-4
6. F/L Gear Rack . . . . . . . . . . . . . . . . . . . .4-4
7. F/L Arm Assembly . . . . . . . . . . . . . . . . .4-4
8. S/W Lever Assembly . . . . . . . . . . . . . . .4-4
9. Cleaner Arm Assembly . . . . . . . . . . . . . .4-5
10. F/E Head . . . . . . . . . . . . . . . . . . . . . . . .4-5
11. A/C Head Base Assembly . . . . . . . . . . .4-5
12. T Brake Assembly . . . . . . . . . . . . . . . . .4-6
13. RS Brake Assembly . . . . . . . . . . . . . . . .4-6
14. Tension Arm Assembly . . . . . . . . . . . . . .4-6
15. S Reel / T Reel . . . . . . . . . . . . . . . . . . .4-6
16. P4 Base Assembly . . . . . . . . . . . . . . . . .4-7
17. Lid Opener . . . . . . . . . . . . . . . . . . . . . . .4-7
18. Pinch Arm Assembly . . . . . . . . . . . . . . .4-7
19. T/up / Arm T/up Lever . . . . . . . . . . . . . .4-7
20. Capstan Belt /Capstan Motor . . . . . . . . .4-8
21. F/R Lever . . . . . . . . . . . . . . . . . . . . . . . .4-8
22. D35 Clutch Assembly . . . . . . . . . . . . . . .4-8
23. Capstan Brake Assembly . . . . . . . . . . . .4-8
24. Drive Gear / Cam Gear . . . . . . . . . . . . .4-9
25. Sector Gear . . . . . . . . . . . . . . . . . . . . . .4-9
26. Slider Plate . . . . . . . . . . . . . . . . . . . . . .4-9
27. Tension Lever . . . . . . . . . . . . . . . . . . . .4-9
28. Spring Lever . . . . . . . . . . . . . . . . . . . . .4-9
29. P2 Gear Assembly/
P3 Gear Assembly . . . . . . . . . . . . . . . .4-10
30. P2 Base Assembly/
P3 Base Assembly . . . . . . . . . . . . . . . .4-10
31. Loading Base . . . . . . . . . . . . . . . . . . . .4-11
32. Tension Base . . . . . . . . . . . . . . . . . . . .4-11
33. Idler Arm Jog Assembly . . . . . . . . . . . .4-11
DECK MECHANISM ADJUSTMENT
• Tools and Fixtures for Service . . . . . . .4-12
1. Mechanism Alignment Position Check .4-13
2. Preparation for Adjustment . . . . . . . . . .4-14
3. Checking Torque . . . . . . . . . . . . . . . . .4-14
4. Guide Roller Height Adjustment . . . . . .4-15
4-1. Preliminary Adjustment . . . . . . . . .4-15
4-2. Precise Adjustment . . . . . . . . . . . .4-15
5. Audio/Control (A/C) Head Adjustment . .4-16
5-1. Preliminary Adjustment . . . . . . . . .4-16
5-2. Confirmation of Tape Path between
Pinch Roller and Take-up Guide . .4-17
5-3. Precise Adjustment
(Azimuth Adjustment) . . . . . . . . . .4-17
6. X-Value Adjustment . . . . . . . . . . . . . . .4-17
7. Adjustment after Replacing Drum Assembly
(Video Heads) . . . . . . . . . . . . . . . . . . .4-18
8. Check the Tape Travel after Reassembling
Deck Mechanism . . . . . . . . . . . . . . . . .4-18
8-1. Check Audio and RF Locking Time
during Playback after CUE or REV
. . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
8-2. Check Tape Curling or Jamming . .4-18
MAINTENANCE/INSPECTION
PROCEDURE
1. Check before starting Repairs . . . . . . .4-19
2. Required Maintenance . . . . . . . . . . . . .4-20
3. Scheduled Maintenance . . . . . . . . . . . .4-20
4. Supplies Required for Inspection and
Maintenance . . . . . . . . . . . . . . . . . . . .4-20
5. Maintenance Procedure . . . . . . . . . . . .4-20
5-1. Cleaning . . . . . . . . . . . . . . . . . . . .4-20
5-2. Greasing . . . . . . . . . . . . . . . . . . . .4-21
MECHANISM TROUBLESHOOTING
GUIDE
1. Deck Mechanism . . . . . . . . . . . . . . . . .4-23
2. Front Loading Mechanism . . . . . . . . . .4-26
EXPLODED VIEWS
1. Front Loading Mechanism Section . . . .4-28
2. Moving Mechanism Section (1) . . . . . . .4-29
3. Moving Mechanism Section (2) . . . . . . .4-30
CONTENTS
SECTION 4 MECHANISM OF VCR PART
DECK MECHANISM PARTS LOCATIONS
4-1
• Top View
• Bottom View
20
24
23
20
24
22
21
29
30
29
30
25
32
27
26
28
NOTE: When reassembly perform the
procedure in the reverse order.
1 Drum Assembly 3 Screw A-1 T
2 Top Plate Assembly 2 Hook A-2 T
2 3 CST Holder Assembly Chassis Hole A-2 T
2 4 Door Opener Chassis Hole A-2 T
5 L/D Motor Bracket 3 Hook A-2 T
Assembly
2,3,4 6 F/L Gear Rack 1 Hook, Chassis Hole A-2 T
2,3,4,6 7 F/L Arm Assembly Chassis Hole A-2 T
8 S/W Lever Assembly 1 Hook A-2 T
9 Cleaner Arm Assembly Chassis Embossing A-3 T
10 F/E Head Chassis Embossing A-3 T
11 A/C Head Base Assembly 1 Screw A-3 T
2,3 12 T Brake Assembly 1 Hook A-4 T
2,3 13 RS Brake Assembly 1 Hook A-4 T
2,3 14 Tension Arm Assembly 2 Hook A-4 T
2,3,12,13, 15 S Reel / T Reel A-4 T
14
16 P4 Base Assembly Chassis Embossing A-5 T
17 Lid Opener Chassis Embossing A-5 T
17 18 Pinch Arm Assembly Shaft A-5 T
17 19 T/up / Arm T/up Lever 1 Hook A-5 T
17,18 20
Capstan Belt /Capstan Motor
3 Screw A-6 B
21 F/R Lever Locking Tab A-6 B
20, 21 22 D35 Clutch Assembly Washer A-6 B
23 Capstan Brake Assembly Locking Tab A-6 B
24 Drive Gear / Cam Gear Washer/Hook A-7 B
25 Sector Gear 1 Hook A-7 B
20,21,23, 26 Slider Plate Shaft Guide A-7 B
24,25
20,21,23, 27 Tension Lever 1 Hook A-7 B
24,25,26
2,3,14,20, 28 Spring Lever Locking Tab A7 B
21,25,23,
24,26
25 29
P2 Gear Assembly/P3 Gear Assembly
Boss A-8 B
2,3,14,25, 30
P2 Base Assembly/P3 Base Assembly
Chassis Slot A-8 B
29
2,3,14,25, 31 Loading Base 1 Screw A-9 T
29
2,3,14 32 Tension Base Chassis Embossing A-9 B
2,3,20,21, 33 Idler Arm Jog Assembly Locking Tab A-9 T
22
Starting
No.
Procedure
Part Fixing Type
Fig-
ure
1) When reassembling, confirm Mechanism and Mode
Switch Alignment Position (Refer to Page 4-14)
2) When disassembling, the Parts in the "Starting No."
colum should be removed first.
R: Top, B:Bottom
2
7
10
1
31
14
15
8
6
3
4
9
5
11
18
16
17
19
19
12
33
13
15
4-2
DECK MECHANISM DISASSEMBLY
(S3)
(S2)
(S2)
(S3)
(A)
Stator
Carbon Brush
Drum Motor
Rotor
Drum Sub Assembly
FPC Drum
(S1)
(S1)
(S1)
FPC Holder
H1
H2
1. Drum Assembly (Fig. A-1-1)
1) Unplug the FPC Drum Connector.
2) Remove three Screws (S1) on the bottom side and separate the Drum assembly.
3) Unhook (H1), (H2) and separate the FPC Holder and
FPC Cap. (See Fig. B-1)
1-1. Drum Motor
1) Remove two Screws (S2) and disassemble the Stator of
the Drum Motor.
(2) Remove two Screws (S3) and separate the Rotor of the
Drum Motor from the Drum Sub assembly.
When reassembling, check to ascertain that the Carbon
Brush is in position.
Fig. A-1
NOTE
(Fig. B-1)
FPC Holder
FPC Drum
FPC Cap
Figure in the opposite direction
(Fig. A-1-1)
DECK MECHANISM DISASSEMBLY
4-3
(B)
(E)
(C1)
(C)
Top Plate
F/L Arm Assembly
S/W Spring Lever
F/L Gear Rack Assembly
Chassis
Door Opener
L/D Motor Bracket Assembly
CST Holder Assembly
(B')
(C')
(D)
(E')
(H6)
(A)
(B)
S/W Lever Assembly
(H8)
Fig. A-2
(Fig. A-2-1)
(Fig. A-2-2)
(Fig. A-2-6)
(Fig. A-2-7)
(Fig. A-2-5)
(Fig. A-2-3)
(Fig. A-2-4)
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