
TABLE OF CONTENTS
REMOVING CASSETTE MANUALLY ............................. 3
DECK MECHANISM PARTS LOCATIONS
Top View............................................................................ 4
Bottom View ...................................................................... 4
DECK MECHANISM DISASSEMBLY
1. Drum Assembly........................................................... 5
2. Plate Assembly Top..................................................... 7
3. Holder Assembly CST................................................. 7
4. Guide CST .................................................................. 7
5. Bracket Side (L)/Bracket Assembly Door.................... 7
6. Arm Assembly F/L ....................................................... 7
7. Lever Assembly S/W................................................... 7
8. Arm Assembly Cleaner................................................ 8
9. Head F/E ..................................................................... 8
10. Base Assembly A/C Head ........................................... 8
11. Brake Assembly S ....................................................... 9
12. Brake Assembly T ....................................................... 9
DECK MECHANISM ADJUSTMENT
Tools and Fixtures for service ......................................... 16
1. Mechanism Alignment Position Check........................ 17
2. Preparation for Adjustment ......................................... 18
3. Checking Torque ......................................................... 18
4. Guide Roller Height Adjustment.................................. 19
4-1. Preliminary Adjustment .......................................... 19
4-2. Precise Adjustment ................................................ 19
5. Audio/Control (A/C) Head Adjustment......................... 20
5-1. Preliminary Adjustment .......................................... 20
5-2. Confirm that the Tape Path smoothly between
the Take-up Guide and Pinch Roller ..................... 21
5-3. Precise Adjustment (Azimuth Adjustment)............. 21
6. X-Value Adjustment..................................................... 21
7. Adjustment after Replacing Drum Assembly
(Video Heads) ............................................................. 22
8. Check the Tape Travel after Reassembling
13. Arm Assembly Tension................................................ 9
14. Reel S & Reel T .......................................................... 9
15. Support CST ............................................................. 10
16. Base Assembly P4 .................................................... 10
17. Opener Lid ................................................................ 10
18. Arm Assembly T/up ................................................... 10
19. Arm Assembly Pinch ................................................. 10
20. Belt Capstan/Motor Capstan ..................................... 11
21.Clutch Assembly D33 ................................................. 11
22. Lever F/R .................................................................. 11
23. Gear Assembly H-Up/D or Gear Assembly Up/D...... 11
24. Bracket Assembly Jog............................................... 12
25. Guide Rack F/L, Gear Rack F/L................................ 12
26. Brake Assembly Capstan.......................................... 12
27. Gear Drive/Gear Cam/Gear Connector .................... 13
28. Bracket Assembly L/D motor..................................... 13
29. Gear Sector............................................................... 14
Deck Mechanism......................................................... 22
8-1. Checking Audio and RF Locking Time
during Playback and after CUE or REV ................ 22
8-2. Check for Tape Curling or Jamming....................... 22
MAINTENANCE/INSPECTION PROCEDURE
1. Check before starting Repairs .................................... 23
2. Required Maintenance ................................................ 24
3. Scheduled Maintenance ............................................. 24
4. Supplies Required for Inspection and Maintenance ... 24
5. Maintenance Procedure.............................................. 24
5-1. Cleaning................................................................. 24
5-2. Greasing ................................................................ 25
MECHANISM TROUBLESHOOTING GUIDE
1. Deck Mechanism ........................................................ 26
2. Front Loading Mechanism .......................................... 29
MECHANISM EXPLODED VIEW 1/3 ............................. 32
MECHANISM MAIN PARTS LIST 1/3 ............................ 33
30. Base Tension/Plate Slider/Lever Tension .................. 14
31. Gear Assembly P3/Gear Assembly P2 ..................... 15
32. Base Assembly P3/Base Assembly P2 ..................... 15
33. Arm Assembly Idler Jog or Arm assembly Idler......... 15
MECHANISM EXPLODED VIEW 2/3 ............................. 34
MECHANISM MAIN PARTS LIST 2/3 ............................ 35
MECHANISM EXPLODED VIEW 3/3 ............................. 36
MECHANISM MAIN PARTS LIST 3/3 ............................ 37
2

4
DECK MECHANISM PARTS LOCATIONS
Bracket Side 'L' 5
Plate Assembly 2
Top
Lever Assembly 8
S/W
4 Guide CST
3 Holder Assembly CST
Opener Door
6 Bracket
Assembly Door
7 Arm Assembly F/L
Motor Capstan 23
Gear Connector 33
Gear Cam 32
Brake Assembly 30
Capstan
Belt Capstan 22
Gear Drive 31
Guide Rack F/L 28
Gear Rack F/L 29
Clutch Assembly D33 24
Lever F/R 25
26 Gear Assembly H-Up/D
39 Gear Assembly P3
40 Gear Assembly P2
36 Base Tension
35 Gear Sector
38 Lever Tension
37 Plate Slider
27 Bracket Assembly
Jog
NOTE : When reassembly perform the
procedure in the reverse order.
1) When reassembling, confirm Mechanism and Mode
Switch Alignment Position (Pefer to Page 17)
2) When disassembling, the Parts for Starting No. Should
be removed first.
1 Drum Assembly 3 Screws , Cap FPC A-1
2 Plate Assembly Top Two Hooks A-2
2 3 Holder Assembly CST Chassis Hole A-2
4 Guide CST 2 Hooks A-2
2,3,4 5 Bracket Side (L) 1 Screw A-2
2,3,4 6 Bracket Assembly Door 1 Screw A-2
2,3,4,5,6 7 Arm Assembly F/L Chassis Hole A-2
2,3,4,5 8 Lever Assembly S/W Chassis Hole A-2
9 Arm Assembly Cleaner Chassis Embossing A-3
10 Head F/E 2 Hooks A-3
11 Base Assembly A/C Head 1 Screw A-3
12 Brake Assembly S Chassis Hole A-4
2,3 13 Brake Assembly T Chassis Hole A-4
2,3,12, 14 Arm Assembly T ension Chassis Hole A-4
2,3,12,14 15 Reel S Chassis Shaft A-4
2,3,13 16 Reel T Chassis Shaft A-4
17 Support CST Chassis Embossing A-5
18 Base Assembly P4 Chassis Embossing A-5
19 Opener Lid Chassis Embossing A-5
19 20 Arm Assembly T/Up Chassis Embossing A-5
19 21 Arm Assembly Pinch Chassis Shaft A-5
Starting
No.
Pracedure
Part
Fixing Type
Fig-
ure
22 Belt Capstan A-6
22 23 Motor Capstan 3 Screws A-6
24 Clutch Assembly D33 1 Washer A-6
22,24 25 Lever F/R 1 Hook A-6
22,24 26 Gear Assembly H-Up/D 2 W ashers A-6
27 Bracket Assembly Jog 1 Screw A-7
28 Guide Rack F/L 1Screw A-7
28 29 Gear Rack F/L A-7
28, 29 30 Brake Assembly Capstan Chassis Shaft A-7
28, 29 31 Gear Drive 1 Washer A-8
28, 29, 30 32 Gear Cam Chassis Shaft A-8
28, 29, 30, 31
33 Gear Connector Chassis Shaft A-8
34 Bracket Assembly L/D Motor 3 Hooks A-8
35 Gear Sector 3 Washers A-9
36 BaseT ension 1 Screw A-9
22, 24, 25, 27
37 Plate Slider Chassis Shaft A-9
28, 29, 31, 35
36
22, 24, 25, 27
28, 29, 31, 35
38 Lever T ension Chassis Hole A-9
36
35 39 Gear Assembly P3 2 Hooks A-10
35, 39 40 Gear Assembly P2 2 Hooks A-10
35, 39, 40 41 Base Assembly P3 Chassis Hole A-10
35, 39, 40, 41
42 Base Assembly P2 Chassis Hole A-10
1, 2 43 Arm Assembly Idler Jog 1 Hook A-10
Starting
No.
Pracedure
Part
Fixing Type
Fig-
ure
Head F/E 10
Drum Assembly 1
Support CST 17
Base Assembly P2 42
Brake Spring S
Brake Assembly S 12
Arm Assembly 14
Tension
Band Assembly
Tension
Reel S 15
Lever
Assembly S/W 8
9 Arm Assembly Cleaner
34 Bracket Assembly
L/D Motor
11 Base Assembly
21 Arm Assembly Pinch
20 Arm Assembly T/Up
A/C Head
19 Opener Lid
18 Base Assembly P4
41 Base Assembly P3
43 Arm Assembly
ldler Jog
16 Reel T
13 Brake Assembly T
Brake Spring T

7
DECK MECHANISM DISASSEMBLY
2. Plate Assembly Top (Fig. A-2-1)
1) Unhook the (H1) and separate the Left Side.
2) Unhook the (H2) and lift up the Plate Assembly Top.
(1) When reassembling, confirm (A),(B) Part of the Plate
Assembly Top is inserted to the (L),(R) Grooves of the
Bracket Side(L) and Bracket Assembly Door.
3. Holder Assembly CST (Fig.A-2-2)
1) Push the Lever Stopper(L),(R) in the direction of the
arrows (A), (B), and move the Holder Assembly CST.
2) Push the Bracket Assembly Door to the right and lift up
the Holder Assembly CSTalong the Guide Groove of the
Bracket Assembly Door.
4. Guide CST (Fig.A-2-3)
1) Push two Hooks(H3),(H4) in the direction of the arrow
and separate the left side.
2) Unhook (H5),(H6) as above No.1) and disassemble the
Guide CST in the direction of the arrow.
5. Bracket Side(L) (Fig. A-2-4)/
Bracket Assembly Door (Fig.A-2-5)
1) Remove the Screw (S1) and disassemble the Bracket
Side(L) in the front.
2) Remove the Screw (S2) and disassemble the Bracket
Assembly Door in the front.
6. Arm Assembly F/L (Fig. A-2-6)
1) Push the Arm Assembly F/L to the left and lift up it.
(1) When reassembling, confirm that the Gear(A) of the Arm
F/L and the Gear(B) of the Gear Rack F/L are assembled
as below.
7. Lever Assembly S/W (Fig. A-2-7)
1) Hook the Spring Lever S/W on (H5).
2) Lift up the left side of the Lever S/W from the Groove(A)
of the Chassis.
(1) Place the Spring Lever S/W of the above (No.1) as
original position.
NOTE
Plate Assembly Top
Bracket Side (L)
Bracket Assembly Door
Lever Stopper (L)
Lever Stopper (R)
Holder Assembly CST
(A)
(B)
Bracket Side (L)
Bracket Assembly Door
(H3)
(H4)
NOTE
Gear (B)
Gear (A)
NOTE
(H5)
Spring
Lever S/W
(H5)
Spring
Lever S/W
(H5)
(H5)

DECK MECHANISM DISASSEMBLY
Reel T
Reel S
Arm Assembly
Tension
Spring T Brake
Brake Assembly T
Band
Assembly
Tension
Brake Assembly S
Spring S Brake
Spring Tension
B
(A)
(C)
Fig. A-4
9
11. Brake Assembly S (Fig. A-4-1)
1) Remove the Spring S Brake.
2) Hold the (A) part shown above Fig. A-4-1 and turn to the
clockwise direction, and then lift up the Brake Assembly S.
(1) When reassembling, be careful not to change the Spring
with below No.12.(Refer to Fig. B-2).
12. Brake Assembly T (Fig. A-4-2)
1) Remove the Spring T Brake.
2) Hold the (B) part shown above Fig. A-4-2 and turn to the
counterclockwise direction, and then lift up the Brake
Assembly T.
(1) When reassembling, be careful not to change the Spring
with above No.11.(Refer to Fig. B-2).
13. Arm Assembly Tension (Fig. A-4-3)
1) Remove the Spring Tension.
2) Hold the (C) part shown above Fig. A-4-3 and turn to the clockwise direction, and then lift up the Arm Assembly Tension.
(1) When reassembling, be careful not to change the Spring
with above No.11,12.(Refer to Fig. B-2).
14. Reel S (Fig. A-4-4) & Reel T (Fig. A-4-5)
1) Lift up the Reel S and Reel T.
(1) When reassembling, be careful not to change the Reel S
and Reel T each other.
(2) Confirm two Slide Washers under the Reel S and Reel T.
NOTE
Spring T Brake
Spring S Brake
Spring Tension
NOTE
(Difference for Springs)
Color (Black)
Three Holes
Reel S
Reel T
(Fig. B-2)
NOTE
NOTE
(Fig. A-4-1)
(Fig. A-4-5)
(Fig. A-4-3)
(Fig. A-4-4)
(Fig. A-4-2)

DECK MECHANISM DISASSEMBLY
Arm
Assembly
Pinch
Opener Lid
Base Assembly P4
Support CST
Arm Assembly T/up
(A)
(B)
(C)
(D)
Spring
Arm T/Up
Fig. A-5
10
15. Support CST (Fig. A-5-1)
1) Break away the (A) part shown above Fig. A-5-1 from the
Embossing of the Chassis in the clockwise direction, and
lift up the Support CST.
16. Base Assembly P4 (Fig. A-5-2)
1) Break away the (B) part shown above Fig. A-5-2 from the
Embossing of the Chassis in the counterclockwise direction and lift up the Base Assembly P4.
17. Opener Lid (Fig. A-5-3)
1) Hook the Spring Arm T/up on the Split digged under the
Arm Assembly T/up.(Refer to Fig.A-5-4(D)).
2) Break away the (C) Part of the Opener Lid from the
Embossing of the Chassis in the Clockwise direction and
lift up the Opener Lid.
18. Arm Assembly T/up (Fig. A-5-4)
1) Confirm that the Spring Arm T/up is placed as above
(No.17.1).
2) Lift up the Arm Assembly T/up.
(1) When reassembling, unhook the Spring Arm T/up Shown
above (No.17.1) to the original position.
19. Arm Assembly Pinch (Fig. A-5-5)
1) Lift up the Arm Assembly Pinch.
NOTE
Opener Lid
Spring Arm T/up
Arm Assembly T/up
(Fig. A-5-3)
(Fig. A-5-4)
(Fig. A-5-1)
(Fig. A-5-2)
(Fig. A-5-5)

DECK MECHANISM DISASSEMBLY
Belt Capstan
Motor Capstan
Clutch Assembly D33
Washer(W1)
Washer(W2)
Spring Up/D
Slide Washer
Gear Assembly H-Up/D or
Lever F/R
(S1)
Hook(H1)
(A)
(C)
(A')
(B')
(B)
Gear Assembly Up/D
(For Normal Models)(For Hi-Rewind Models)
Optional Parts
Fig. A-6
11
20. Belt Capstan (Fig. A-6-1)/
Motor Capstan (Fig. A-6-2)
1) Remove the Belt Capstan.
2) Remove three Screws(S1) on the back side of the
Chassis and lift up the Motor Capstan.
(1) When reassembling, Confirm the (A), (B) parts of Motor
Capstan is located to the (A'), (B') of the Chassis.
21. Clutch Assembly D33 (Fig. A-6-3)
1) Remove the Washer(W1) and lift up the Clutch Assembly
D33.
22. Lever F/R (Fig. A-6-4)
1) Unhook the (H1) shown above Fig. A-6-4 and lift up the
Lever F/R.
(1) When reassembling, move the (C) part of the Lever F/R up
and down, then confirm if it is returned to original position.
23. Gear Assembly H-Up/D or Gear
Assembly Up/D (Fig. A-6-5)
1) Remove the Washer(W2) and lift up the Gear Assembly
H-up/D.
2) Remove the Spring Up/D.
3) Remove the Slide Washer.
(1) Gear Assembly H-Up/D is for Hi-Rewind Models.
(2) Gear Assembly Up/D is for Normal Models except Hi-Rewind
Models.
NOTE
NOTE
(Fig. A-6-1)
(Fig. A-6-2)
(Fig. A-6-3)
(Fig. A-6-5)
(Fig. A-6-4)
NOTE

DECK MECHANISM DISASSEMBLY
H1
H2
Gear Drive
Gear Cam
Gear Connector
Bracket Assembly
L/D Motor
Washer (W1)
Gear Connector
Hole(A')+(A)
Hole(B')+(B)
Chassis
Gear Cam
Hole(B)
Hole(B')
Hole(A)
Hole(A')
Fig. A-8
13
27. Gear Drive (Fig. A-8-1)/
Gear Cam (Fig. A-8-2)/
Gear Connector (Fig. A-8-3)
1) Remove the Washer(W1) and lift up the Gear Drive.
2) Lift up the Gear Cam.
3) Lift up the Gear Connector.
(1) When reassembling, confirm that the Hole (A) of the
Gear Connector is aligned to the Hole (A') of the Chassis
(Fig. A-8-3).
(2) When reassembling, confirm that the Hole (B) of the
Gear Cam is aligned to the Hole (B') of the Chassis (Fig.
A-8-2).
(3) When reassembling, confirm that the (C) part of the Gear
Cam is aligned to the (D) part of the Gear Drive as shown
Fig. B-3
28. Bracket Assembly L/D Motor (Fig. A-8-4)
1) Unhook the three Hooks(H1),(H2) and push down the
Bracket Assembly L/D Motor.
NOTE
Gear Cam (C)
Gear Drive (D)
Hook (H1), (H2)
Chassis
(Fig. B-3)
(Fig. A-8-1)
(Fig. A-8-2)
(Fig. A-8-3)
(Fig. A-8-4)

DECK MECHANISM DISASSEMBLY
Gear Assembly P3
Gear Assembly P2
Arm Assembly Idler Jog Arm Assembly Idler or
(For 2HD Models) (For 4HD Models)
Base Assembly P3
Base Assembly P2
Chassis
H1
H2
(A)
(B)
(H3)
Gear Assembly P3
Gear Assembly P2
(A)
(B)
Optional Parts
Fig. A-10
15
31. Gear Assembly P3 (Fig. A-10-1)/
Gear Assembly P2 (Fig. A-10-2)
1) Unhook the two Hooks(H1) and lift up the Gear Assembly P3.
2) Unhook the two Hooks(H2) and lift up the Gear Assembly P2.
32. Base Assembly P3 (Fig. A-10-3)/
Base Assembly P2 (Fig. A-10-4)
1) Move the Base Assembly P3 in the direction of the arrow of the
Chassis Hole(A) and push down the Base Assembly P3.
2) Move the Base Assembly P2 in the direction of the arrow of the
Chassis Hole(B) and push down the Base Assembly P2.
33. Arm Assembly Idler Jog or Arm Assembly
Idler (Fig. A-10-5)
1) Unhook the Hook(H3) and push down the Arm Assembly Idler
Jog.
1) Arm Assembly Idler Jog is for 4HD Models.
2) Arm Assembly Idler is for 2HD Models.
1) When reassembling, confirm that the (A) Part of the Gear
Assembly P3 is aligned to the (B) Part of the Gear Assembly P2
as shown below.
NOTE
NOTE
Gear Assembly P3
Gear Assembly P2
(A)
(B)
(Fig. A-10-1)
(Fig. A-10-2)
(Fig. A-10-4)
(Fig. A-10-3)
(Fig. A-10-5)
(Unloading Condition)

Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected.
DECK MECHANISM ADJUSTMENT
17
1.Mechanism Alignment Position Check
1) Turn the Power S/W on and eject the Cassette by pressing the Eject Button.
2) Remove the Top Cover and Plate Assembly Top, visually check if the Gear Cam Hole is aligned with the
Chassis Hole as below Fig. C-2.
3) IF not, rotate the Shaft of the Loading Motor to either
Clockwise or Counterclockwise until the Alignment is
as below Fig. C-2.
4) Remove the Screw which fixes the Deck Mechanism
and Main Frame and confirm if the Gear Cam is aligned
with the Gear Drive as below Fig. C-1(A).
5) Confirm if the Mode S/W on the Main P.C.Board is
aligned as below Fig. C-1(B).
6) Remount the Deck Mechanism on the Main P.C.Board
and check each operation.
Mode S/W
Gear Cam
Gear Drive
(A)
(B)
Test Equipment/ Fixture
• Blank tape
Test Conditions (Mechanism
Condition)
• Eject Mode (with Cassette ejected)
Check Point
• Mechanism and Mode Switch Position
Fig. C-1
Fig. C-2
CHECK DIAGRAM
BOTTOM VIEW
TOP VIEW
Gear Cam (o) and Gear Drive (o) groove alignment
L/D Motor Assembly
Gear Cam
Gear Cam Hole
Chassis Hole

18
Purpose: To insure smooth Transport of the Tape during each Mode of Operation.
If the T ape Transport is abnormal, then check the Torque as indicated by the chart below .
DECK MECHANISM ADJUSTMENT
2. Preparation for Adjustment (To set the
Deck Mechanism to the Loading state
without inserting a Cassette Tape).
1) Unplug the Power Cord from the AC Outlet.
2) Disassemble the Top Cover and Plate Assembly Top.
3) Plug the Power Cord into the AC Outlet.
4) Turn the Power S/W on and push the Lever Stopper (L),(R)
of the Holder Assembly CSTto the back for Loading the
Cassette without Tape.
Cover the Holes of the End Sensors at the both sides of the
Bracket Side(L) and Bracket Assembly Door to prevent a
light leak.
Then The Deck Mechanism drives to the Stop Mode.
In this case, The Deck Mechanism can accept inputs of
each mode, however the Rewind and Review Operation
can not be performed for more than a few seconds
because the Take-up Reel Table is in the Stop State and
can not be detected the Reel Pulses.
3. Checking Torque
The Values are measured by using a Torque Gauge and
Torque Gauge Adaptor with the Torque Gauge affixed.
The Torque reading to measure occurs when the Tape
abruptly changes direction from Fast Forward of Rewind
Mode, when quick bracking is applied to both Reels.
SRK
V
ID
E
O
C
A
S
S
E
T
T
E
T
O
R
Q
U
E
M
E
T
E
R
V
H
T
-3
0
3
S
R
K
-
V
H
T
-
S
S
R
K
-
V
H
T
-
T
300
250
200
150
50
0
300
250
200
150
50
0
100
Test Equipment/ Fixture
• Torque Gauge(600g/cm ATG)
• Torque Gauge Adaptor
• Cassette Torque Meter
SRK-VHT-303
Checking Method
• Perform each Deck Mechanism Mode without
inserting a Cassette Tape(Refer to above No.2
Preparation for Adjustment).
• Read the Measurement of the Take-up or Supply
Reels on the Cassette Torque Meter(Fig. C-3-2).
• Attach the Torque Gauge Adaptor to the Torque
Gauge and then read the Value of it(Fig. C-3-1).
NOTE:
Fig. C-3-2
Fig. C-3-1
Torque Gauge
Torque Gauge
Adaptor
Reel Table
Item
Fast Forward Torque
Rewind Torque
Play Take-Up Torque
Review Torque
Mode
Fast Forward
Rewind
Play
Review
Test Equipment
Cassette Torque Gauge
Cassette Torque Gauge
Cassette Torque Meter
Cassette Torque Meter
Take-Up Reel
Supply Reel
Take-Up Reel
Supply Reel
More than 400g/cm
More than 400g/cm
75~115g/cm
130~200g/m
Measurement Reel
Measurement Values
Test Conditions (Mechanism
Condition)
• Play (FF) or Review (REW) Mode
NOTE:
• Cassette Torque Meter (SRK-VHT-303)
• Torque Gauge (600g.cm ATG)

DECK MECHANISM ADJUSTMENT
19
4.Guide Roller Height Adjustment
Adjustment Procedure
1) Confirm if the Tape runs along the Tape Guide Line of the
Lower Drum.
2) If the Tape runs the Bottom of the Guide Line, turn the Guide
Roller Height Adjustment Screw to Clockwise direction.
3) If it runs the Top, turn to Counterclockwise direction.
4) Adjust the Height of the Guide Roller to be guided to the Guide
Line of the Lower Drum from the Starting and Ending Point of
the Drum.
Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the
Tape Guide Line on the Lower Drum.
Test Equipment/ Fixture
• Post Height Adjusting Driver
Test Conditions (Mechanism Condition)
• Play or Review Mode
Adjustment Point
• Guide Roller Height Adjustment
screws on the Supply and Take-Up
Guide Rollers.
Fig. C-4-1
Upper Flange
Guide Roller
Retaining Screw
Guide Roller Height
Adjustment screw
ADJUSTMENT DIAGRAM
Test Equipment/Fixture
• Oscilloscope
• Alignment T ape
• Post Height Adjusting
Driver
Test Equipment Connection Points
• CH-1:PB RF Envelope
• CH-2:NTSC: SW 30Hz
PAL: SW 25Hz
• Head Switching Output
Point
• RF Envelope Output
Point
Test Conditions VCR(VCP) State
• Play an Alignment Tape
Adjustment Point
• Guide Roller Height
Adjustment Screws
Fig. C-4-2
Fig. C-4-3
P3 POST
ADJUSTMENT
P2 POST
ADJUSTMENT
Turn the Roller Guide Height
Adjustment Screw slightly
to flatten the waveform.
Tracking control at center
RF ENVELOPE OUTPUT TEST POINT
OSCILLOSCOPE
HEAD SWITCHING OUTPUT TEST
POINT
Turn(Move) the tracking
control to both directions
4-1. Preliminary Adjustment
4-2. Precise Adjustment
Adjustment Procedure
1) Play an Alignment Tape after connecting the Probe of the
Oscilloscope to the RF Envelope Output Test Point and
Head Switching Output Test Point.
2) Tracking Control(in PB Mode) : Center Position(When
this Adjustment is performed after the Drum Assembly
has been replaced, set the Tracking Control so that the
RF Output is Maximum).
3) Height Adjustment Screw : Flatten the RF Waveform.
(Fig. C-4-2)
4) Turn(Move) the Tracking Control(in PB Mode)
Clockwise and Counterclockwise.(Fig. C-4-3)
5) Check that any Drop of RF Output is uniform at the
Start and End of the Waveform.
If the adjustment is excessive or insufficient the tape
will jam or fold.
NOTE
Waveform Diagrams
Connection Diagram

20
DECK MECHANISM ADJUSTMENT
5. Audio/Control (A/C) Head Adjustment
Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact
Alignment in both the Record and Playback Modes.
Test Equipment/ Fixture
• Blank Tape
• Screw Driver(+) Type 5mm
• Play the blank tape
Test Conditions (Mechanism Condition)
Adjustment Point
• Tilt Adjustment Screw(C)
• Height Adjustment Screw(B)
• Azimuth Adjustment Screw(A)
Fig. C-5-1
A/C Head Base
Fig. C-5-2
Height Adjustment
Screw(B)
Tilt Adjustment
Screw(C)
Azimuth Adjustment
Screw(A)
X-Value Adjustment
Hole
Fixed Screw
Fig. C-5-3
A/C Head
Tape
Tape
0.2~0.25mm
P4
5-1. Preliminary Adjustment (Height and Tilt Adjustment)
Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.
1) Initially adjust the Base Assembly A/C Head as shown
Fig. C-5-1 by using the Height Adjustment Screw(B).
2) Play a Blank Tape and observe if the Tape passes accurately over the A/C Head without Tape Curling or
Folding.
3) If Folding or Curling is occured then adjust the Tilt
Adjustment Screw(C) while the Tape is running to
resemble Fig. C-5-3.
4) Reconfirm the Tape Path after Playback about 4~5 seconds.
Ideal A/C head height occurs, when the tape runs
between 0.2~0.25mm above the bottom edge of the A/C
head core.
NOTE
Adjustment Procedure/Diagrams
A/C Head Assembly
-0.05
10.9

Purpose: To obtain compatibility with other VCR(VCP) Models.
DECK MECHANISM ADJUSTMENT
21
5-2. Confirm that the Tape passes smoothly
between the Take-up Guide and Pinch
Roller(using a Mirror or the naked eye).
1) Afetr completing Step 5-1.(Preliminary Adjustment),
check that the Tape passes around the Take-up Guide
and Pinch Roller without Folding or Curling at the Top or
Bottom.
(1) If Folding or Curling is observed at the Bottom of
the Take-up Guide then slowly turn the Tilt
Adjustment Screw(C) in the Clockwise directioin.
(2) If Folding or Curling is observed at the Top of it then
slowly turn the Tilt Adjustment Screw(C) in the
Counterclockwise direction.
Check the RF Envelope after adjusting the A/C Head, if
the RF Waveform differs from Fig. C-5-4, performs
Precise Adjustment to flat the RF Waveform.
Test Equipment/ Fixture
• Oscilloscope
• Alignment Tape(SP)
• Screw Driver(+) Type 5mm
Connection Point
• Audio output jack
Test Conditions
(Mechanism Condition)
• Play an Alignment Tape
1KHz, 7KHz Sections
Adjustment Point
• Azimuth Adjustment Screw(A)
• Height Adjustment Screw(B)
1) Connect the Probe of the Oscilloscope to Audio Output
Jack.
2) Alternately adjust the Azimuth Adjustment Screw(A) and
the Tilt Adjustment Screw(C) for Maximum Output of the
1Khz and 7Khz segments, while maintaining the flattest
Envelope differential between the two Frequencies.
Adjustment Procedure
5-3. Precise Adjustment (Azimuth adjustment)
6. X-Value Adjustment
Fig. C-5-4
1KHZ
• Oscilloscope
• Alignment tape(SP only)
• Screw Driver(+) Type 5mm
• CH-1: PB RF Envelope
• CH-2: NTSC: SW 30Hz
PAL: SW 25Hz
• Head Swithching Output
Test Point
• RF Envelope Output Test
Point
Test Conditions
(Mechanism Condition)
• Play an Alignment Tape
Adjustment PointConnection PointTest Equipment/ Fixture
Adjustment Procedure
1) Insert the alignment tape, and press the + or - manual
tracking (channel) button once while "AUTO TRACKING"
is flashing on the screen to release auto tracking, and then
center the tracking.
2) Run the tape long enough for tracking to complete one
cycle.
3) Loosen the fixing screw, and move the A/C head base
assembly in the direction shown in the diagram, to find the
center of the peak so that the maximum envelope is available.
With this method, the 31-µm head can trace on the centerof 58-µm track.
4) Tighten the A/C head base assembly fixing screw.
7KHZ
A:Maximum
B:Maximum
Left
Right
Groove at the
Base A/C
Height Adjustment Screw(B)
Tilt Adjustment Screw(C)
Azimuth Adjustment
Screw(A)
X-Value Adjustment Hole
Fixed Screw
RF ENVELOPE OUTPUT TEST POINT
OSCILLOSCOPE
HEAD SWITCHING OUTPUT TEST POINT
Connection Diagram
Adjustment Diagram
NOTE:
CH-1
CH-2

Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum.
8-2.Check for tape curling or jamming
Test Equipment/ Fixture
• T-160 Tape
• T-120 Tape
Specification
• Be sure there is no tape jamming or curling
at the begining, middle or end of the tape.
VCR(VCP) State
•
Run the CUE, REV play mode at the
beginning and the end of the tape.
Test Conditions (Mecanism Condition)
1) Confirm that the tape runs smoothly around the roller
guides, drum and A/C head assemblies while abruptly
changing operating modes from Play to CUE or REV.
This is to be checked at the begining, middle and end
sections of the cassette.
2) Confirm that the tape passes over the A/C head assembly as indicated by proper audio reproduction and proper tape counter performance.
Checking Procedure
DECK MECHANISM ADJUSTMENT
22
7. Adjustment after Replacing Drum Assembly (Video Heads)
T est Equipment/ Fixture
• Oscilloscope
• Alignment tapes
• Blank Tape
• Post Height Adjusting Driver
• Screw Driver(+) Type 5mm
Connection Point
• CH-1: PB RF Envelope
• CH-2: NTSC: SW 30Hz
PAL: SW 25Hz
• Head Swithching Output
Test Point
• RF Envelope Output Test Point
Test Conditions
(Mechanism Condition)
• Play the blank tape
• Play an alignment tape
Adjustment Points
• Guide Roller Precise
Adjustment
• Switching Point
• Tracking Preset
• X-Value
Checking/Adjustment Procedure
Play a blank tape and check for tape curling or creasing around
the roller guide. If there is a problem then follow the procedure
4. "Guide Roller Height" and 5. "Audio Control(A/C) Head
Adjustment".
RF ENVELOPE OUTPUT TEST POINT
OSCILLOSCOPE
HEAD SWITCHING OUTPUT TEST
POINT
Connection Diagram
Waveform
V1/V MAX ≤0.7
V2/V MAX ≤0.8
RF ENVELOPE OUTPUT
Fig. C-7
8. Check the Tape Travel after Reassembling Deck Assembly.
8-1.Check Audio and RF Locking Time during playback and after CUE or REV (FF/REW)
Test Equipment/ Fixture
• Oscilloscope
• Alignment tapes(with 6H
3kHz Color Bar Signal)
• Stop Watch
Specification
• RF Locking Time: Less than 5 sec.
• Audio Locking Time:Less than
10sec
Test Equipment
Connection Points
• CH-1: PB RF Envelope
• CH-2: Audio Output
• RF Envelope Output Point
• Audio Ouptut Jack
Test Conditions
(Mecanism Condition)
• Play an alignment tape
(with 6H 3kHz Color Bar
Signal)
Checking Procedure
Play an alignment tape then change the operating mode to
CUE or REV and confirm if the unit meets the above listed
specifications.
1) CUE is fast forward mode (FF)
2) REV is the rewind mode (REW)
3) Referenced to the Play mode
NOTES:
V1
V
V2
CH1 CH2
Connection Points

MAINTENANCE/INSPECTION PROCEDURE
23
(4) F/E Head
(3) P1 Post
(6) Drum Assembly
(Video Head)
(5) Base
Assembly P2
(2) Tension Post
(1) Supply Reel
(7) Base Assembly P3
The following faults can be remedied by cleaning and oiling.
Check the needed lubrication and the conditions of cleanliness in the unit.
Check with the customer to find out how often the unit is
used, and then determine that the unit is ready for inspection
and maintenance. Check the following parts.
1 Check before starting repairs
Phenomenon Inspection
Replacement
Color beats Dirt on full-erase head
o
Poor S/N, no color
Dirt on video head
Vertical or
Horizontal jitter
Dirt on Audio/control head
Dirt on pinch roller
If locations marked with o do not operate normally after cleaning, check for wear and replace.
See the EXPLODED VIEWS at the end of this manual as well
as the above illustrations See the Greasing (Page 25) for the
sections to be lubricated and greased.
NOTE
o
o
o
o
Dirt on video head
Dirt on tape transport system
Low volume,
Sound distorted
Tape does not run.
Tape is slack
o
In Review and
Unloading (off mode),
the Tape is rolled up
loosely.
Clutch Ass’y S27
Torque reduced
Cleaning Drum and
transport system
Fig. C-9-3
(8) A/C Head
(9) P4 Post
(11) Pinch Roller
(12) T ake-up Guide Post
(10) Capstan Shaft
(13) T ake-up Reel
* No. (1)~(13) Indicates the Tape Path to be traveled from Supply Reel to Take-up Reel.
Fig. C-9-1 Top VIEW
Fig. C-9-2 BOTTOM VIEW
F/E Head
Video Head
A/C Head
Pinch Roller
Belt Capston
Clutch
Assembly D33
Fig. C-9-3 Tape Transport System

24
MAINTENANCE/INSPECTION PROCEDURE
The recording density of a VCR(VCP) is much higher than
that of an audio tape recorder. VCR(VCP) components must
be very precise, at tolerances of 1/1000mm, to ensure compatiblity with other VCRs. If any of these components are
worn or dirty, the symptoms will be the same as if the part is
defective. To ensure a good picture, periodic inspection and
maintenance, including replacement of worn out parts and
lubrication, is necessary.
Schedules for maintenance and inspection are not fixed
because they vary greatly according to the way in which the
customer uses the VCR(VCP), and the environment in which
the VCR(VCP) is used.
But, in general home use, a good picture will be maintained
if inspection and maintenance is made every 1,000 hours.
The table below shows the relation between time used and
inspection period.
Table 1
(1) Grease : Kanto G-311G (Blue) or equivalent
(2) Isopropyl Alcohol or equivalent
(3) Cleaning Patches
(4) Grease : Kanto G-381(Yellow) : Used only for Reel S and
Reel T
(1) Cleaning video head
First use a cleaning tape. If the dirt on the head is too
stubborn to remove by tape, use the cleaning patch.
Coat the cleaning patch with Isopropyl Alcohol. Touch
the cleaning patch to the head tip and gently turn the
head(rotating cylinder) right and left.
(Do not move the cleaning patch vertically. Make sure
that only the buckskin on the cleaning patch comes into
contact with the head. Otherwise, the head may be
damaged.)
Thoroughly dry the head. Then run the test tape. If
lsopropyl Alcohol remains on the video head, the
tape may be damaged when it comes into contact
with the head surface.
(2) Clean the tape transport system and drive system, etc,
by wiping with a cleaning patch wetted with Isporopyl
Alcohol.
1 It is the tape transport system which comes into contact
with the running tape. The drive system consists of those
parts which moves the tape.
2 Make sure that during cleaning you do not touch the tape
transport system with the tip of a screw driver and no that
force is that would cause deforming or damage applied to
the system.
2.Required Maintenance
3.Scheduled Maintenance
5) Maintenance Procedure
5-1) Cleaning
NOTES:
About 1
year
One hour
Two hours
Three hours
When
inspection is
necessary
Average
hours used
per day
About 18
months
About 3
years
4.Supplies Required for Inspection and
Maintence
Fig. C-9-4
Drum
(Rotating Cylinder)
Head Tip
Coat With Isopropyl Alcohol
Touch this section of cleaning
patch to the head tip and gently
turn the Drum (Rotating Cylinder)
Cleaning Patch

MAINTENANCE/INSPECTION PROCEDURE
25
(1) Greasing guidelines
Apply grease, with a cleaning patch. Do not use excess
grease. It may come into contact with the tape transport
or drive system. Wipe any excess and clean with clean
ing patch wetted in Isopropyl Alcohol.
(2) Periodic greasing
Grease specified locations every 5,000 hours.
5-2) Greasing
NOTE:Greasing Points
1)Loading Path Inside & Top side
2)Base Tension Boss inside Hole
3)Arm Assembly F/L "U" Groove
4)Arm Take-up Rubbing Section
5)L/D Motor Worm Wheel Part
6)Shaft
7)Arm Assembly F/L of Buming
Inside Hole
8)Reel S, TShaft (G381:Yellow)
9)Brake T Groove
Gear Assembly Up/D
Gear Drive
Gear Sector
Gear Cam
Press
Cam Part
Cam Part
Gear Part
Stopper Part
Bracket Side (L)
Bracket Assembly Door
1) Loading Path Inside & Top side
2) Shaft
3) Gear Rack F/L Moving Section
4) Shaft
5) Lever Tension Groove
6) Clutch Assembly D33 Shaft
7) Brake "S" Rubbing Section
Chassis (Top)
Chassis (Bottom)
Guide Rack F/L Gear Rack F/L
Side
Bottom
inside
Bottom
Cam &
Gear Part
Plate Slider (Top)
Plate Slider (Bottom)
Cam Part
Cam Part
Gear Part
Guide Rail

MECHANISM MAIN PARTS LIST 1/3
REF. NO PART NO. KANRI DESCRIPTION
1 S1-41R-000-2A0 CHASSIS ASSY
2 S2-61R-000-9A0 ARM ASSY IDLER-J<P4>
2 S2-61R-000-8A0 ARM ASSY IDLER-J<P2>
3 S4-08R-000-1A0 REEL S
4 S2-61R-000-4A0 ARM ASSY TENSION
5 S9-70R-005-2A0 SPRING TENSION
6 S7-70R-000-4A0 BAND ASSY TENSION(MECH)
7 S5-238-33B-000 HEAD FE D33
8 S4-21R-000-3A0 BRAKE ASSY S
9 S9-70R-005-4A0 SPRING SB
10 S9-80R-001-0A0 SUPPORTER CST
11 S0-41R-000-7A0 BASE ASSY P4
12 S0-06R-001-4A0 CAP,FPC
13 S9-30R-010-7A0 HOLDER FPC<P4>
13 S9-30R-010-6A0 HOLDER FPC<P2>
14 S7-23R-010-1B0 DRUM ASSY SUB D33 2HD<P2>
14 S7-23R-010-2D0 DRUM ASSY SUB D33 4HD<P4>
15 S6-80R-B00-04A MOTOR(MECH)
16 S0-41R-000-5A0 BASE ASSY A/C HEAD
17 S2-61R-000-3A0 ARM ASSY CLEANER
18 S0-41R-000-4A0 BASE ASSY P3
19 S2-61R-001-1A0 ARM ASSY PINCH
20 S8-10R-005-3A0 BRACKET L/D MOTOR
21 S6-81R-000-7A0 MOTOR ASSY L/D
22 S4-70R-002-5A0 GEAR WHEEL
23 S8-70R-000-1A0 OPENER LID
24 S4-08R-000-2A0 REEL T
25 S9-70R-005-3A0 SPRING TB
26 S4-21R-000-4A0 BRAKE ASSY T
27 S9-70R-004-3A0 SPRING T/UP
28 S2-60R-001-1A0 ARM T/UP
29 S0-41R-000-3A0 BASE ASSY P2
A 87-261-071-410 PAN HEAD SCREW 2.6-4
B 87-261-094-410 PAN HEAD SCREW 3-6
C 87-741-095-410 SCREW,PAN HEAD 3.0-8.0
D S3-540-01B-000 WASHER,P.S 3.1-6-0.5
NO.
33

MECHANISM MAIN PARTS LIST 2/3
REF. NO PART NO. KANRI DESCRIPTION
1 S9-70R-005-1A0 SPRING UP/D
2 S4-70R-004-4A0 GEAR ASSY UP/D
3 S2-65R-000-2A0 CLUTCH ASSY
4 S5-10R-002-5A0 LEVER F/R
5 S4-70R-003-7A0 GEAR RACK F/L
6 S9-74R-001-8A0 GUIDE RACK F/L
7 S4-00R-000-5A0 BELT CAPSTAN
8 S6-80R-A00-03A MOTOR CAPSTAN(MECH)
9 S9-70R-005-9A0 SPRING CAPSTAN
10 S4-70R-003-3A0 GEAR DRIVE
11 S4-70R-003-6B0 GEAR CONNECT
12 S4-70R-003-2A0 GEAR CAM
13 S4-70R-003-4A0 GEAR SECTOR
14 S3-00R-015-7A0 PLATE SLIDER
15 S4-70R-002-8A0 GEAR ASSY P3
16 S4-70R-002-6A0 GEAR ASSY P2
17 S8-11R-001-2A0 BRACKET ASSY JOG<P4>
18 S9-70R-004-9A0 SPRING JOG<P4>
19 S0-40R-001-8A0 BASE TENSION
20 S5-10R-002-2A0 LEVER TENSION
A SA-PF0-262-218 SCREW,PAN HEAD 2.6-6.8
B 87-261-094-410 PAN HEAD SCREW 3-6
C SW-ZZR-000-4B0 WASHER STOPPER
D SW-ZZR-000-4A0 WASHER STOPPER
NO.
35