Panasonic AG-DV2500P, Service Manual

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4-4
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.
Fig. 4.2.7 Switch Location
Table 4.2.3
AG-DV2500
CAPSTAN Search SPEED Approx. 20X speed
FF/REW TIME Mini (DVM60) Under 75 sec.
Standerd (DV270) Under 200 sec.
4.2.6 Tension
The AG-DV2500 have double tension control for supply/take-up.
Switch lever
HW
HW2
Sup Reel Lock
S1
S2
S3
Table 4.2.2 Switches
Switch name Operation Location
HW Cassette intake detection switch Fig. 4.2.6
HW2 Cassette eject detection switch Fig. 4.2.6
S1 (Mecha board) Standard cassette detection switch Fig. 4.2.7
S2 (Mecha board) SUP reel lock release switch* Fig. 4.2.7
S3 (Mecha board) Cassette intake completion detection switch Fig. 4.2.7
* 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.
4.2.4 Switches
This is a description of how the various switches equipped on the mechanism operate, as shown in table 4.2.2.
1
2
3
1
2
3
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.