Teac MT-20D-IO Maintenance Manual page 116

"SCSI"
4-2-7 Initialization of SOD
The SOD (Simulator aD) is a simulator to test the overall }ITU including the
PCBA Interface Control
This simulator permits the error rate, etc. to be checked with HTU set to
online status.
The PCBA Interface Control can also be adjusted and tested by connecting
SOD.
Prior to the use of SOD, perform the following initialization.
(1) Preset the output voltages of the DC power supply to +12 V and +5 V.
(2) Turn off the DC power supply, and connect the power cable to the PWR
connector of SOD.
(3)
Connect the power cable to the POWER connector J2 of HTU.
(4)
Connect the interface cable between the MT2-ST
IfF
connector of SOD
and J1 of MTU, so that the triangular mark of the connector is set to
the terminals 1 and 2 side.
(5) Turn on the DC power supply.
(6) Check if the power voltage supplied to MTU is within the range of -5%
to +5% of the rated voltage, using a digital voltmeter (DCV).
Between TP1S and TP18 of PCBA Drive Control: +12 V power voltage
(11.
4 to 12.6 V)
Between TP16 and TP18 of PCBA Drive Control: +5 V power voltage
( 4 . 75 to 5. 25 V)
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