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Page 6
The Troubleshooting Information on the following pages has been divided
into three sections with subsections in order to make it easier for the techni-
cian to find the particular section of interest. It is recommended that the fol-
lowing outline be used for troubleshooting:
1.
Try out the unit, preferably with the customer's tape, until the malfunc-
tion occurs.
2.
3.
leshooting a problem with Audio Record means that Audio Playback
must first be verified.
4.
The Sections are as follows:
I.
Power Supply and Motor
Directions: Follow
each test in order. The correct voltage or
waveform will lead you to the next step; an in correct rneasure-
ment will lead you to the defective component(s). From Step
2 on, the ground connectiin is taken from the negative battery
1. POWER SUPPLY AND MOTOR
TROUBLESHOOTING THE 5275
TROUBLESHOOTING SECTIONS
If the motor works, skip Section I, Power Supply, and go directly to the
relevant section.
Note that the subsections are in functional order; for instance troub-
IIA. Audio Playback
IIB. Audio Record
IIIA.
Sync Tone Generator
111B. Sync Record
IIIC. Sync Playback
IIID. Sync and Audio Record
terminal, which is located on
black wire connected to It.
All voltages given are nominal, and may be 10% above or
below the stated voltages.
the left side of the unit and has a
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