General

The MZ-1T01 data recorder is inbuilt in MZ-731 and MZ-721 only, but you can easily add one to your MZ-711 subsequently.

The MZ-1T01 can be operated like a common audio recorder.

Write down the tape counter value after saving for later use. This will enable you to easily find the point for a new SAVE or a LOAD. The reset key sets the tape counter to 000. Use it when you start a cassette from its beginning.

For best results use normal tapes ( Fe ) with capacities up to a maximum of 60 minutes ( C30 - C 60 ). Tapes with capacities more than 60 minutes are thin and can result in read errors by deforming during the age.

RECORD / FAST FORWARD / REWIND torque measurements

1. Set the torque instrument on the cassette tape recorder.
2. Torque value under each mode must be as follows:
   
   

   Position	Torque measuring cassette	Value
   PLAYBACK	TW-2111	30~   70gram / cm
   FAST FORWARD	TW-2231	60~ 160gram / cm
   REWIND	TW-2231	60~ 160gram / cm

Cleaning of head

RECORD pushbutton can not be pushed in

Tape speed adjustment

1. Connect the wow-flutter measuring instrument to #8 pin of the CNW3001 connector.
2. Playback the testtape ( UKOG-0119CSZZ, MTT-113 recorded with 8KHz signals ). Use the middle part of the tape for test.
3. Adjust the semi-fixed resistor located on the Motor Board so that the playback frequency should become 8000 ± 250Hz.

You can use each other audio recorder or data recorder if no MZ-1T01 is available ( e.g. MZ-711 ). To this you need a known stereo audio cable with cinch connectors mounted at the ends of the cable. Connect the following plugs:

You'll find the plugs of the MZ-700 at his reverse side, the plugs are labeled with READ and WRITE.

Please take note of the following items:

1. The message " RECORD. PLAY" will never appear on the screen if you execute the save process. Please press this button before you execute the save command. Some recorders will have pressed the RECORD button and the PLAY button coincidentally. The motor can't be controlled by the MZ-700, so you have to press the STOP button at the end of the save process.

2. The message " PLAY" will never appear on the screen if you execute the load process. Please press this button before executing the load command. The motor can't be controlled by the MZ-700, so you have to press the STOP button at the end of the load process.

3. Adjust the volume control and the record control to high signals. Set it to a little bit higher signals as you do for audio signals. May be, audio recorder with an automatic control will not work properly.

4. Try to set the switch for the polarity of the audio recorder's head to the alternate position of the switch if it is not possible to load data / programs from the audio recorder. To this, you must remove the MZ-1T01 by removing his two screws at the backside of the MZ-700.

5. Use the audio recorder that saved your data / programs to load the data / programs.  To prevent problems don't use different audio recorders.

6. The programs saved by an audio recorder cannot be loaded by the MZ-1T01.

The data recorder MZ-1T04 of the MZ-821 can be used too like the MZ-1T01 without any restrictions.

External recorder playback circuit

When the external recorder is used, connection is made with the 8255 by shorting P-12. In this condition, the write data ( 8255 PC output ) is differentiated and sent to the recorder.

In the case of read, the signal peak is chopped by D1 and D2 ( about 0.6V ), amplified in the 1.2V limiter ( about 1.2V ), then amplified to 5V in the next stage amplifier. The phase of the read signal may be inverted with the tape switch after this is to compensate for phase difference owing to the head of the recorder.

When proper operation is not attained with an external recorder, adjust the volume control and the tone control knobs to optimum positions. Those which incorporate treble and base for tone control should preferable be set to a flat condition, and those with only a tone control knob, should be set to a high condition.

Additional technical information

Data transfer with the recorder is carried out via the 8255. The read data is sent out through port C1 and the write data is received through the port C5.

The motor on / off control is carried out via the port C3 and that activation of the motor is confirmed through the port C4. The signal SENSE goes low when FF, REW, or PLAY pushbutton is pushed on the MZ-1T01.

For more details about the format of the data written to tape go to the next page now.