Switches; Reel Motor; Tension - Panasonic AG-DV2500P Service Manual

4.2.4 Switches

This is a description of how the various switches equipped on the mechanism operate, as shown in table 4.2.2.
Switch name
S1 (Mecha board)
S2 (Mecha board)
S3 (Mecha board)
* Condition of SUP reel lock release switch operation :
After cassette intake, tape is pulled out of the take-up side for loading, but when a virgin tape is inserted it switches over to
pull out from the supply side since it is not possible to pull out from the take-up side.
Immediately following tape intake completion, when the Begin sensor detects tape leader the cassette housing motor
moves further to the loading side and, after the switches lever release the SUP brake, S2 is turned ON and brake release is
detected.

4.2.5 Reel motor

The AG-DV2500 has adoped an independent one-reel motor, besides a capstan motor. As a result, quicker response when switching
from Play to Reverse Search or Forward Search modes has been attained, greatly improving operability and the durability.
And as shown in table 4.2.3 the speeds of capstan search and FF/REW are also accelerated.
CAPSTAN Search SPEED
FF/REW TIME

4.2.6 Tension

The AG-DV2500 have double tension control for supply/take-up.
The AG-DV2500 uses double tension control to regulate the tension differential caused by winding and modes used, obtaining a
uniform tape tension for stable tape transport.
4-4
HW Cassette intake detection switch
HW2 Cassette eject detection switch
Standard cassette detection switch
SUP reel lock release switch*
Cassette intake completion detection switch
Sup Reel Lock
S1 1
S2 2
S3 3
HW
HW2
Switch lever
Fig. 4.2.7 Switch Location
Mini (DVM60)
Standerd (DV270)
Operation
Table 4.2.2 Switches
AG-DV2500
Approx. 20X speed
Under 75 sec.
Under 200 sec.
Table 4.2.3
Location
Fig. 4.2.6
Fig. 4.2.6
Fig. 4.2.7 1
Fig. 4.2.7
2
Fig. 4.2.7
3