Yamaha DP-U50 Service Manual - Page 14

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Yamaha DP-U50 Service Manual
DP-U50
9. ERROR
(Error history)
1 – 8 E0 –E7 (Error history)
The history of up to 8 errors is stored in memory. The error
codes are used to display it.
Error code
Description
No error
00
USB internal error
11 – 14
USB interrupt error
21 – 2B
USB communication error (*1)
2C – 2E
USB interrupt transmission error
2F
USB stream error (*2)
41 – 46
Checksum error
80
RAM (IC447) Read/Write error
81
AC3D(IC417) Read/Write error
82
EGAV (IC475) Read/Write error
83
Backup RAM initialized at the power ON (*3)
84
RAM for Y-mersion coefficient initialized at the power ON
85
Detection of abnormality in power voltage
90
Auto power OFF (24h)
A0
(*1) : When the AC plug is plugged and unplugged with USB
connected, this error may be recorded but it causes no
problem in actual use.
(*2) : This error is not as fatal at to cause any problem in actual
use.
(*3) : This code is recorded in the error history at least once
because the memory is cleared at the time of shipping from
the factory.
9. CLEAR (Error history clear)
Clears the entire error history in memory and overwrites
with the normal value (00).
10. RETURN
Returns the menu to the main menu (9. ERROR).
13
10. DIT
(Digital input/output control)
1. GENERAL
GENERAL category code output (0x00)
2. CD
CD category code output (0x01)
3. PCM Enc
PCM Encoder/decoder category code output (0x02)
4. DAT
DAT category code output (0x03)
5. BS JPN
BS JAPAN category code output (0x04)
6. Synthe
Synthesizer category code output (0x05)
7. AD
A/D converter category code output (0x06)
8. SD
Solid state memory category code output (0x08)
9. BS Eur
BS Euro category code output (0x0E)
10. MIXER
Digital signal mixer category code output (0x12)
11. SFC
Sampling rate converter category code output (0x1A)
12. DSP
Digital sound processor category code output (0x2A)
13. L Pa:Ch
Ch Change L bit parent $^ child
14. DIR RV
Digital interface receive code display
15. RETURN
Returns the menu to the main menu (10. DIT).
0. EXIT
(DIAG end)
Terminates the DIAG function, executes CPU resetting
and restart operation.
Use the input selector USB for restarting operation.
Executing the memory reset reservation setting will set to
the standby mode.