Torque Measuring - Philips DVP3350V Service Manual

DECK MECHANISM ADJUSTMENT
2. Previous Preparation for Deck Adjustment
(Preparation to load the VCR (VCP) with cassette tape not inserted)
1) Take the power cord from the consent.
2) Separate the top cover and the plate assembly top.
3) Insert the power cord into again.
4) Turn the VCR (VCP) on and load the cassette while push-
ing the lever stopper of the holder assembly CST back-
ward. In this case, clog both holes on the housing
rail part of chassis to prevent detection of the end sensor.

3. Torque Measuring

Purpose of Measuring : To measure and check the reel torque on the take-up part and the
Fixtures and tools used
• Torque Gauge
(600 g.cm ATG)
• Torque Gauge Adaptor
• Cassette Torque Meter
SRK-VHT-303
Item
Fast forward Torque
Rewind Torque
Play Take-Up Torque
Review Torque
NOTE
Adhere the torque gauge adaptor to the torque gauge for measuring the value.
• Torque Gauge (600g.cm ATG)
supply part that performs basic operation of the VCR (VCP) for
smoothly forwarding the tape.
Measure and check followings when the tape is not smoothly
wound or the tape velocity is abnormally proceeded:
VCR (VCP) status
• Play (FF) or Review
(REW) Mode
Mode
Fast Forward
Rewind
Play
Review
Torque Gauge
Torque Gauge
Adaptor
Reel Table
Fig. C-3-1
If doing so, proceeding to the stop mode is done. In this
status, input signals of all modes can be received.
However, operation of the Rewind and the Review is
impossible since the take-up reel remains at stop status
and so cannot detect the reel pulse (however, possible for
several seconds).
• Try to operate the VCR (VCP) per mode with the
tape not inserted (See '2. Prior Preparation for
Deck Adjustment).
• Measure after adhering and fixing the torque
gauge adaptor to the torque gauge (Fig. C-3-1)
• Read scale of the supply or take-up part of the
cassette torque meter (Fig. C-3-2).
Instruments
Torque Gauge
Torque Gauge
VHT-303
VHT-303
• Cassette Torque Meter (SRK-VHT-303)
Measuring method
Reel Measured
Take-Up Reel
Supply Reel
Take-Up Reel
Supply Reel
Fig. C-3-2
Measuring Value
More than 400g°cm
More than 400g°cm
40~100g°cm
120~210g°cm
4-14