Tension Sensor Voltage Adjustment (1); Tension Sensor Voltage Adjustment (2) - Panasonic DVCPRO AJ-D455P Service Manual

2-4. Tension Sensor Voltage
Adjustment (1)
BOARD
SERVO (F7)
TP TP201
ADJ. VR1 (OFFSET) on the Mech. I/F board
TAPE -----
INPUT -----
MODE EJECT
M. EQ Digital voltmeter
SPEC. 2.5V ± 0.05V
1. Connect the Digital voltmeter to TP201.
2. Adjust the VR1 on the Mech. I/F board so that the
DC voltage is in the specification.
Mech. I/F
Board
S Brake
Solenoid
VR2
GAIN
Mechanical
VR1 Chassis
OFFSET
2-5. Tension Sensor Voltage
Adjustment (2)
BOARD SERVO (F7)
TP TP201
ADJ. VR2 (GAIN)
TAPE
-----
INPUT -----
MODE EJECT
M. EQ
Digital voltmeter,
VFK1208
(Neutral Position Tool, Black with hole)
VFK1156 (PLAY Position Tool, Black)
SPEC. 2.5V ± 0.05V
NOTE:
Do not use magnetized
screwdriver.
Do not touch the magnetize screwdriver to S-Reel
FG magnet portion, while adjusting the lever (D)
portion.
1. Remove the Front Loading Unit. (Refer to SEC2
Disassembly Procedures)
S Reel
tweezers and
ELE-3
2. Connect the Carriage tool (see the following
figure) to connector P1 which is coming from the
MECH. I/F board to Carriage board of the front
loading unit.
3. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
4. Select the A00: SERVO ADJUST and press the
"SET" button to open the SERVO ADJUST
MENU.
5. Select the A08 TENSION.
6. Install the VFK1208 (black with hole) as shown in
figure.
7. Connect the Digital voltmeter to TP201.
Press the "4 4 4 4 " button, then display the ON sign at
8.
the right side of A08 TENSION. At the same time
the loading is started.
9. Confirm the DC voltage at TP201 is in the
specification. If it is not, adjust the sensor position
as follows.
Loosen the screw (A) and move the lever (D) with
tweezers. After adjusting, press the "3 3 3 3 " button to
set the unloading position.
10. Remove the VFK1208 (black with hole), and
install the VFK1156 (Black) as same way as
VFK1208.
11. Press the "4 4 4 4 " button to set the loading position.
12. Adjust the VR2 (GAIN) on the Mech. I/F board so
that the DC voltage at TP201 is in the
specification.
VFK1156 (Black)
Play Position Tool
VFK1208 (Black with hole)
Neutral Position Tool
A
Attach to surface
TENSION
POST
TENSION
REGURATOR
P.C.BOARD
D