Teac A-5500 - Page 13

7. SERVICING AND MAINTENANCE
. Power supply:
Make sure that the power supply is stable at the rated voltage.
Fluctuations will result in uneven tape speed, and wow and flutter
in the recorded signal.
. Cleaning the tape path:
TEAC TZ-261A for Head and metal cleaning, TZ-261B for Pinch Roller
(Rubber) cleaning must be used.
. Demagnetization of the head:
If the record or playback head become magnetized, noise will in-
crease and fidelity will deteriorate. For this reason, it is ad-
visable to use brass or other such non-magnetic tools when working
near the heads.
Similarly, the use of a tester or vacuum tube ohm-meter should be
avoided in checking the heads, as these instruments operate by
applying a DC current, and will thus induce magnetism. If the heads
have had any contact with DC currents or magnetic tools, demagnetize
them with a TEAC Model E-1 Head Demagnetizer.
. Major cleaning and lubrication:
Under normal operating conditions, lubrication is required only once
‘each year. Before lubricating, clean the reel assembly drive belts
and drive pulleys and the tape guide rollers.
Approximately once each year or after 2,000 hours of use, apply TEAC
TZ-255 Lubricating Oil to the following places only;
Pinch roller shaft bearings -++- 1 drop
Guide Rollers (LEFT/RIGHT) -++++ 2 drops
NOTE
Motors: The three DC motors of 5500/5300 are made with sealed,
oil-less-metal bearings. Do not attempt to lubricate as it is
required.
WARNING
Excessive oiling will scatter oil inside the deck. This oil will
cause reel assembly drive belt slippage and other difficulties.
Check for slippage and clean all parts inside the deck before ope-
rating after lubrication.