ADJUSTMENT PROCEDURE

 

Caution:

This product has been thoroughly abjusted at the factory before shipment. Therefore do not abjust anything other than those VRs required for servicing.

BEFORE making any calibration abjustments, Be sure

 

PROGRAM no. 11 (noise level):
 

 

Parameter:

 

17 18 31 32 33 35 37 61 62 63 64 65 66 83 84
 

 

Value:

 

0 1 99 0 0 0,15 0 0 31 0 31, 0 0 0

 

PROGRAM no. 21 {master oscillator):

 

that test data is loaded into POLY-800.

The following setting chart shows the program data used for servece testing. After inputting the data, save it on tape for future time saving convenience.
 

 

Parameter:

 

11 12 13 14 15 16 17 18 31 32 33 35 38 41 42 43 44 45 46 83 84

 

 

Value:

 

2 2 1 0 0 0 30 1 60 0 0 0 0 0 0 31 0 31 0 0 0

 

PROGRAM no. 13 (cut off):
 

 

Parameter:

 

11 12 13 14 15 16 17 18 31 32 33 35 37 41 42 43 44 45 46 83 84

 

 

Value:

 

2 2 1 0 0 0 31 1 12 12 2 0 0 0 0 31 0 31 0 0 0

 

PROGRAM no. 14 (resonance):
 

 

Parameter:

 

11 12 13 14 15 16 17 18 31 32 33 35 37 41 42 43 44 45 46 81 82 83 84

 

 

l/alue:

 

2 2 1 0 0 0 31 1 9915 0 0 0 0 0 31 0 31 0 15 0 0 0

 

PROGRAM no. 15 (delay 1):
 

 

Parameter:

 

11 12 13 14 15 16 17 18 31 32 33 35 37 41 42 43 44 45 46 61 71 72 73 74 75 76 77 81 82 83 84 85 86 81 88

 

 

Value:

 

1 1 1 1 1 1 31 1 99 0 0 1 0 0 0 7 0 0 0 0 5015 0 0 15 0 0 0 0 0 0 2 1 1 0

 

PROGRAM no. 16 (delay 2):
 

 

Parameter:

 

11 12 13 14 15 16 17 18 31 32 33 35 37 41 42 43 44 45 46 61 71 72 73 74 75 76 77 81 82 83 84 85 86 81 88

 

 

Value:

 

1 1 1 1 1 1 31 1 99 0 0 1 0 0 0 7 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 2 1 1 0

1. Power supply circuit (KLM-1032)

Be sure that the specified AC adapter is used: 9V, 300mA,

 

1) + 5V check and adjustment:

Use a DVM (digital voltmeter) to check KLM-596 connector CN6 Pin 6 and confirm +5V (~0.005V). Adjust VR1 if necessary.

 

2) – 5V check:

Use a DYM to check KLM-596 connector CN6 Pin 8 and confirm – 5V (within – 4.7V- – 5.7V)

2. DIA converter check and adjustment (KLM-1032)

With joystick bend control at center position: (BEND INT MAX) connect DVM to KLM-596 IC10 (TL062) Pin 7 and confirm 1.986V +0.005V. Adjust VR4 if necessary.

Reference data:

3.990V for an upward pitch bend and

0.020V for a downward pitch bend.

 

 

Note:

Adjustment is easiest in the joystick circuit although the idea is to obtain a 4V -+0.004V output from IC 38 (TL062) by adjusting the D/A converter when IC 81C55 port A output is all high.

3. Noise level check and adjustment: (KLM-1032)

1) Select program no. 11.

2) Depress C3 key and set to HOLD.

 

3) Connect on oscilloscope to KLM-596 CN6A 3 pin and confirm noise level of 0.3Vp-p (+20%).

 

4) Adjust VR3 if necessary.