nice completed SERVICE MANUAL as the description THANK YOU !!!-
Text excerpt from page 18 (click to view)
B Connect two units using the SB-62 cable as shown by the item 3. DATA COMMUNICATIONS (page 9) in this manual.
C Press 2 button on any unit (A). This unit�s LCD display ROM TEST ROM OK RAM TEST XXX K OK KEY TEST XXX 2 ECHO D Then press 1 button on another unit (B). Another unit�s LCD display ROM TEST ROM OK RAM TEST XXX K OK KEY TEST XXX 1 COMM 2 ECHO OK
In the case of NG, LCD displays a letter �FAIL�. If �OK� was displayed, another unit (B) transmitted data to any unit (A). E Pressing ESC buttons on the both units, return to the condition described in the item 12 . LCD displays on the both units are the same as display shown in the item 11 . F Next, try to transmit data from the unit (A) to the unit (B). G Return to the condition described in the item B using ESC button. H Pressing ON/OFF button twice, turn these units off.