10-5 Moisture

Condensation

When the unit is suddenly moved from a cold to a warm location, or used in a very humid place, moisture from the air can condense on the head-drum. This is called moisture condensation. If the tape is run in this state, it can adhere to the drum. To prevent such a condition from occurring, the unit is provided with a moisture detecting function.

If moisture condenses on the head-drum while the unit is in use, the ALARM indicator lights and ERR-10 is displayed in time data display area 1.

If this happens, the drum and capstan motors stop and the cassette is automatically ejected. Then, the drum starts to rotate again to dry its surface. In this state, the unit is not operable. When the moisture has evaporated, the error message disappears and the ALARM indicator goes off.

If ERR-10 appears and the ALARM indicator lights immediately after powering the unit on

Leave the unit powered on and wait until the error message disappears and the indicator goes off.

While the indicator is lit, you cannot insert a cassette. When the indicator goes off and the error message disappears, you can use the unit.

If you move the unit from a cold to a warm location

Leave the unit powered off for about 10 minutes, in order to give the unit time to detect moisture condensation.

10-6 Regular Checks

10-6-1 Digital Hours Meter

The digital hours meter can display seven items of information, in corresponding display modes, about the operational history of the unit. Use it as a guide in scheduling periodic maintenance.

Display modes of the hours meter

H01: OPERATION mode

Displays the total number of hours the unit has been powered on in units of 1 hour.

H02: DRUM RUNNING mode

Displays the total number of hours the drum has run with tape threaded in units of 1 hour.

H03: TAPE RUNNING mode

Displays the total number of hours the unit has been in fast forward, rewind, playback, search, recording or editing (except for stop and still) mode in units of 1 hour.

H04: THREADING mode

Displays the total number of times tape has been threaded in the unit.

H12: DRUM RUNNING mode (resettable) Same as H02 except that the count is resettable.

This can be used as a guide in determining when to replace the drum.

H13: TAPE RUNNING mode (resettable) Same as H03 except that the count is resettable.

This can be used as a guide in determining when to replace such components as fixed heads and pinch rollers.

H14: THREADING mode (resettable) Same as H04 except that the count is resettable.

This can be used as a guide in determining when to replace, for example, the threading motor.

Inspection and Maintenance 10 Chapter

Moisture Condensation / Regular Checks

83