Sony DNW-A22 Maintenance Manual page 89

Digital videocassette player
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C000 : CASSETTE SW
This submenu checks the functions of cassette tab sensors.
Checking
Be sure to check each sensor (switch).
(1) Push a sensor (switch) with a finger, and hold it.
. Check the superimposed display to see that a character below the correspond-
ing SW number changes from "0" to "1".
(2) Release the sensor (switch).
. Check the superimposed display to see that above-mentioned "1" returns to "0".
(3) To finish the check, press the MENU button once.
In case of NG
Check the corresponding sensor on the PTC-59 board.
Check the sensor input port of MPU (IC1 on the MS-50 board).
DNW-A22/A22P
Locations of Sensors (Switches)
4-2. TAPE Maintenance Mode (M0)
4-2-2. SERVO CHECK Mode (C0)
SERVO CHECK
INPUT CHECK
C000:CASSETTE SW
1:REEL HUB
3:THICKNESS 4:SPARE
5:SPARE
7:N.A.
9:N.A.
SW 987654321
000000000
(Ex.: When pushing the switch 6)
SERVO CHECK
INPUT CHECK
C000:CASSETTE SW
1:REEL HUB
3:THICKNESS 4:SPARE
5:SPARE
7:N.A.
9:N.A.
SW 987654321
000100000
Cassette tab sensors
123
4 5
6
1 Reel hub sensor
2 Metal/oxide tape sensor
3 Tape thickness sensor
4 Spare sensor 2
5 Spare sensor 1
6 Digital/analog tape sensor
2:METAL/OX
6:DGTL/ANLG
8:N.A.
123
4 5
6
2:METAL/OX
6:DGTL/ANLG
8:N.A.
123
4 5
6
4-13

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