Adjustment must be performed in the order listed below.
POWER SUPPLY BOARD
ENTERING TEST MODE
CHECKING MIDI FUNCTION
Allow at least 10 minutes for warmup period; mandatory upon VCF adjustments.
1. DC SUPPLY VOLTAGES
(POWER SUPPLY BOARD)
Any slight adjustment on this board must be followed by a complete adjustment of the rest. Do not touch the trimmers inadvertently before checking the test points for voltage.
Test instrument: Digital voltmeter with 10mV resolution.
1-1. Adjust VR1 for 15V+ 10mV at pl. 1-2. Adjust VR2 for +5V + 10mV at Qb. 1-3. Verify +15V + 0.8V at Qc.
1-4. Verify +5V + 0.5V at Qd.
The following adjustments can be performed with the aid of Test Program stored in the CPU on the CPU Board.
To enter the test mode, hold KEY TRANSPOSE down and turn the JUNO-106 ON; the display window will
read _ indicating that the unit is in the test mode. During the test mode, each switch serves as follows: