I found the manual to be clear concise and complete. It was of immense assistance when removing the unit as the unit was over 22 years old and the wiring diagram was unobtainable from the manufacturer. The exploded drawings were clear as were the instructions and labels.
This manual was very good & was very helpful with repairs.
Always great & fast service from Owner's manual.
Text excerpt from page 10 (click to view)
5. To check the 3 Pin I/F After pressing � 7 � button, the following menu appears on the LCD.
PX-653 TEST Program Ver.2.21
7....RS-232C I/F Set the H/T on the I/O box. Select the I/F switch to 3 pin SIF. Press � Enter � key. This test is executed o n c e . In case you want to check this continuously, select aging test at test mode menu.
Set the H/T(DT-9000) , I/O box (DT-9060I/O) and loop back connector as follows;
Loop back connector
6. AGING TEST This test can be check the RS232C I/F and 3 pin I/F. When you select the aging test at test mode menu, you can check the I/F continualy. Each preparation is same for individual test.
