Operating instructions

4.2 Record and Play Modes

If there are any unusual sounds, mechanical malfunctions or strange odors

during the following procedures or if anything seems to be abnormal,

immediately turn off the POWER switch, unplug the AC cord and inspect the

machine to determine the cause. If in doubt as to the cause or severity of the

problem after consulting the appropriate section of this manual, contact the

nearest OTARI representative or the OTARI technical service department for

assistance.

NOTE: If the MTR-90III is set up with a 16 channel (8-channel) head

assembly, disregard all Remote Control Unit switches for channels 17-24 (9-

24).

4.2.1 Threading the Tape on the Machine

1. Unlock the reel tables so they will accommodate a reel hub by lifting up

the clamp levers on top.

2. Place a reel on the Reel Table and lower the clamp levers to secure the

reel to the Reel Table.

NOTE: There is a locating pin near the bottom of each reel table. In order for

the reel to seat firmly against the reel table, be sure one of the slots in the

reel hub is aligned with the locating pin. To lock reel to reel table, push down

on clamp level until it is seated. Failure to observe this precaution will cause

the reel to "float" and may damage the reel and/or the tape.

3. Turn on the power (the POWER switch is behind the front door of the

MTR-90III at the left side near the bottom). The adjacent 8 pilot lights

(Light Emitting Diodes-LEDs) illuminate indicating the different sections

of the power supply are operating. The meter lamps and the lamps in

the transport buttons glow dimly except the TAPE UNLOAD button which

should be brightly illuminated. The Tape Time counter on top of the

head assembly should indicate "0.00.0" in red numerals. This indication

appears several seconds after the power is turned on.

UNLOAD SPOT ERASE CUE SHIELD

TAPE SPEED RESET

LOW

Figure 4-1

Tape Threading Path

MTR-90III Operation and Maintenance Manual

October 1990

Section 4 Operation

4 - 3