Service Instructions; Service Test Program; Service Position; Manual Unloading Of Vcr - Philips VR6491 Service Manual

1-4
3. SERVICE INSTRUCTIONS
3.1 SERVICE TEST PROGRAM
A. Continuous test
a. This test may be used to check if the VCR with loaded
cassette is working correctly.
Start procedure:
when connecting the VCR to the mains voltage.
Two different tests are available:
a) continuous PLAY.
The VCR is brought into the continuous play/rewind
mode when, prior to the start procedure, a recorded
cassette is loaded into the VCR. The recorder will play
the tape till its end, rewind till the beginning of the
tape, go back to play and so on.
b) continuous RECORD/PLAY
When the cassette is loaded into the VCR before the
start procedure is executed and after the start
procedure RECORD is pressed, the VCR will enter the
record mode till the end of the tape and then go into
the continuous play/rewind mode.
disconnecting the VCR from the mains supply.
B. Display test
This test may be used to confirm that all elements and
symbols of the multifunction display are working
correctly.
Start procedure:
Keep the STILL and FF buttons pressed in
simultaneously when connecting the VCR to the mains
supply. All indication leds must be ignited.
C. initialisation of the microprocessor
This function is used to initialize (to reset) the
microprocessor, all the data that is stored in the RAM
memory is lost.
Start procedure:
D. Microprocessor program indication
Start procedure:
Keep STOP and DOWN buttons pressed in
simultaneously when connecting the VCR to the mains
supply. The "hours" indication (2 digits) of the muitifuction
display will show the stroke number of the VCR e.g. 75
for Australia.
(5 + Stereo, black + Mono)
3.2 Service position
Disassembly procedure item 4.6
CS 27 434
POWER SUPPLY
(PSOL)
@
45 165 AN1
®
Fig. 1
3.3 Manual unloading of the VCR a
When, due to some electrical or mechanical failure of the
VCR a cassette is stuck in the recorder, it is possible to
remove the cassette by hand.
- Remove the bottom plate.
- Rotate the center pulley (Fig. 2) counterclockwise
while pushing the change lever on the bottom side of
the tapedeck (Fig. 3) as indicated by the arrow to
release the lock. See also the relevant chapter in
tapedeck manual DM 4/0.
Warning: Removal of the loader from the tapedeck
requires vast readjustments of the deck after
remounting of the loader.
Bottom View
Center Pulley
Unit
Cu or CCw
Fig. 2
Bottom View
Change Lever
Fig. 3