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Korg Volca Bass Service Manual page 20

Analogue bass machine
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Appendix error list
The common subject matter about the error display
If an error occurs during the inspection, all LED flashes, waiting to be entered.
At this time, you can check the error content by simultaneously pressing the [MEMORY] button the
[STEP] button.
Each time it is pressed, appears inspection number "*. *", 1 error information "10 **", error information 2
"20 **" is visited at the same time the [VCO1] key + [VCOP] key.
Content of the information will vary depending on the inspection number, please refer to the error table of
another inspection.
For operations other than those described here, please refer to "Operation in the standby state" and "test
mode operation".
Error Display list of internal inspection
(A) If "10F*" is displayed on the seven-segment
(A-1) If "10Fd" is displayed on the seven-segment, the main ROM checksum error.
(A-2) If "10FE" is displayed on the seven-segment, the panel ROM checksum error.
(A-3) If "10FF" is displayed on the seven-segment, self tuning error.
Please check the (PIN 38,39,40,42,48,49,52,53,58 etc. CPU) where relevant.
(B) Case except (A)
7-segment "10 **" display indicates the pin that detected the anomaly.
7-segment "20 **" display indicates the abnormal cause.
(B-1) If "20FF" is displayed on the seven-segment
State of the pin that detected the abnormality is invalid.
(B-2) If the "FF" other messages of "20 **" is displayed in "**" the 7-segment.
The status is invalid between pin that was adjacent to the "**".
Correspondence table of Pin number displayed as "**" is shown below.
Display
Pin
Display
00
55
14
01
56
15
02
64
16
03
65
17
04
66
37
Pin
Display
Pin
37
50
33
41
51
34
43
52
35
47
53
61
2
54
44
Display
Pin
Display
65
16
80
66
17
81
67
11
82
70
30
83
71
31
85
Pin
Display
Pin
38
94
88
40
95
8
42
97
58
48
A0
50
53
A1
51

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