Sony DCR-TRV130 / DCR-TRV130E / DCR-TRV230 / DCR-TRV230E / DCR-TRV235E / DCR-TRV325E / DCR-TRV330 / DCR-TRV330E / DCR-TRV430E / DCR-TRV530 / DCR-TRV530E / DCR-TRV725E / DCR-TRV730 / DCR-TRV730E / DCR-TRV828 / DCR-TRV828E / DCR-TRV830 / DCR-TRV830E Service Manual ▷ View online
— 33 —
Fig. 4-20
4-20. M Slide Plate Assembly, LS Arm Assembly, Cam Gear 2, GL Arm Assembly
1. Removal procedure
Note: Identify which method of type is used by referring to the description
on page 4.
1)
Remove the LS chassis block assembly. (Refer to 4-11.)
2)
Remove the guide lock plate (S) (Refer to 4-18.)
3)
Remove the relay gear 1.
4)
Remove the M slide plate assembly 2 in the direction of the
arrow A.
arrow A.
5)
Remove the LS arm assembly 3 and LS arm roller 4.
Note: There are two types of the mechanism chassis shaft A. The
type B is the mechanism chassis shaft to which the LS guide A
roller is installed. Replace the LS guide A roller so as not to
drop it.
roller is installed. Replace the LS guide A roller so as not to
drop it.
6)
Remove the cam gear (2) 5.
7)
Remove the GL arm assembly 6 from the lower side of the
cam relay gear (1) in the direction of the arrow B.
cam relay gear (1) in the direction of the arrow B.
Note: After removing the GL arm assembly, fix the guide gear (S/T)
assembly.
2. Attachment procedure
1)
Attach the GL arm assembly 6 to the shaft so that the GL arm
assembly 6 is positioned under the cam relay gear (1) .
assembly 6 is positioned under the cam relay gear (1) .
Note: The in-phase markings of the guide gear (S/T) assembly and
GL arm assembly 6 must be aligned.
2)
While aligning the cam gear (2) 5 with the dowel of the GL
arm assembly, attach the cam gear (2) 5.
arm assembly, attach the cam gear (2) 5.
Note: The in-phase markings of the cam relay gear (1), cam gear (1)
and cam gear (2) 5 must be aligned.
3)
Attach the LS arm roller 4 to the LS arm assembly 3. While
aligning them with the cam groove on the cam gear (2) 5,
attach them.
aligning them with the cam groove on the cam gear (2) 5,
attach them.
Note: There are two types of the mechanism chassis shaft A. The
type B is the mechanism chassis shaft to which the LS guide A
roller is installed. When replacing it, apply 3 to 4 drops of
grease and then install the LS guide A roller.
roller is installed. When replacing it, apply 3 to 4 drops of
grease and then install the LS guide A roller.
4)
Attach the M slide plate assembly 2.
5)
Attach the relay gear 1.
6)
Attach the guide lock plate (S). (Refer to 4-18.)
7)
Attach the LS chassis block assembly to the mechaical chassis.
(Refer to 4-11.)
(Refer to 4-11.)
Note; Check that the in-phase marking of each gear is aligned.
Apply grease.
Apply 3-4 drops
grease.
grease.
Apply
grease.
grease.
3
LS arm
assembly
1
Relay gear
4
LS arm roller
Be careful not
to drop.
5
Cam gear
(2)
Cam relay gear (1)
Guide gear
(T) assembly
(T) assembly
Guide gear
(S) assembly
(S) assembly
Cam gear (1)
A
B
2
Remove the M slide
plate assembly in the
direction of the arrow
direction of the arrow
A
.
6
Remove the GL arm
assembly in the
direction of the
arrow
direction of the
arrow
B
.
Cam relay
gear (2)
gear (2)
Cam relay
gear (1)
gear (1)
Guide gear
(T) assembly
(T) assembly
Guide gear
(S) assembly
(S) assembly
GL arm
assembly
assembly
Cam gear (1)
M slide plate
assembly
assembly
Cam gear (2)
LS arm assembly
Hole of mechanism
chassis
chassis
SETTING THE GEAR POSITION
Rotary switch
Coat the cam groove
with grease.
with grease.
There are two types
of the mechanism
chassis shaft A.
of the mechanism
chassis shaft A.
LS guide roller A
Stop ring
(E type)
groove
(E type)
groove
Dowel
When attaching it, coat the hatched
portion with grease.
portion with grease.
Mechanism type B
— 34 —
5. Adjustment
5-1. Check and Adjustment of TG1 Back-tension Position
1. Check Procedure
1)
Assemble the mechanism deck into the main unit.
2)
Thread a normal tape and let the machine enter the PB (or REC)
mode.
mode.
3)
Check that the distance between the upper flange of the TG1
guide and the side surface of the LS chassis block is 12.0
guide and the side surface of the LS chassis block is 12.0
±
0.4
mm (range of fluctuation: 0.5 mm or less).
2. Adjustment Procedure
1)
Remove the cassette compartment and the blind plate.
2)
Adjust the position of the TG1 guide by changing the tilt of the
rising metal sheet of the LS chassis block assembly.
rising metal sheet of the LS chassis block assembly.
Fig. 5-1
Loading motor
Drum
S reel
TG1
BT band
Right
Left
Left
Right
12.0
±
0.4 mm
(range of fluctuation:
0.5 mm or less).
Rising metal sheet
— 35 —
5-2. Check and Adjustment of FWD/RVS Back-tension
1. Check Procedure
1)
1)
Install the mechanism deck in the main unit and set the take-up
torque cassette (Ref. No. J-6).
torque cassette (Ref. No. J-6).
2)
Enter the PLAY mode.
3)
Check the FWD torque as follows.
• Check the FWD torque of the T reel side in the PLAY mode.
• Check the FWD torque of the T reel side in the PLAY mode.
Specified value: 5 gf•cm or higher.
4)
Check the FWD back tension as follows.
• Check the FWD back tension by measuring the torque of
• Check the FWD back tension by measuring the torque of
the S reel side.
Specified value: 7.5 to 9.5 gf•cm
Specified value: 7.5 to 9.5 gf•cm
• Adjustment procedure
If the value of the FWD back tension does not satisfy the
specifications, change the position where the TG1 arm spring
is hooked.
If the value is larger than the specifications:
Change the spring hook position in the direction of the arrow
A
specifications, change the position where the TG1 arm spring
is hooked.
If the value is larger than the specifications:
Change the spring hook position in the direction of the arrow
A
.
If the value is smaller than the specifications:
Change the spring hook position in the direction of the arrow
B
Change the spring hook position in the direction of the arrow
B
.
Fig. 5-2
BT band
assembly
assembly
RVS arm
spring
spring
TG1 arm
spring
spring
TG1 arm
Reel table
(T) assembly
(T) assembly
A
B
5)
Enter the RVS mode.
6)
Check the RVS torque as follows.
• Check the RVS torque of the S reel side in the RVS mode.
• Check the RVS torque of the S reel side in the RVS mode.
Specified value: 17 to 35 gf•cm
7)
Check the RVS brake torque as follows.
• Check the RVS brake torque by measuring the torque of the
• Check the RVS brake torque by measuring the torque of the
T reel side.
Specified value: 8 to 16 gf•cm
Specified value: 8 to 16 gf•cm
— 36 —
Fig. 5-3
5-3. Capstan Motor Azimuth Position Adjustment
1. Check Procedure
1)
Insert the thickness gauge (Ref. No. J-14) of 0.75 mm between
the protrusion of the mechanism chassis and the capstan motor,
and check the azimuth position.
the protrusion of the mechanism chassis and the capstan motor,
and check the azimuth position.
2. Adjustment Procedure
1)
Loosen the capstan azimuth adjustment screw (SANG camera
pan 2 M1.4
pan 2 M1.4
×
4.5) 1, and insert the thickness gauge (0.75
mm)(Ref. No. J-14) between the protrusion of the mechanism
chassis and the capstan motor.
chassis and the capstan motor.
2)
Slowly tighten the capstan azimuth adjustment screw until it
slightly contacts the thickness gauge, and remove the thickness
gauge.
slightly contacts the thickness gauge, and remove the thickness
gauge.
Capstan
motor
motor
1
Capstan azimuth adjustment screw
(SANG camera pan 2 M1.4
×
4.5)
2
Thickness gauge
t = 0.75 mm
FP-300 flexible
board
board
Mechanism
chassis
chassis
Protrusion of the mechanism chassis
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