5.When [RET RMVE] is displayed in the LCD, disconnect the plug from RETURN.
6. RET2 , RETURN SW On (internally RETURN is selected)
SO[1]R (0.5001(=1/2*16)) ---> DSP SI[1]R (0.338713 +-30%)
(OPEN) A/D D/A
SEND--->RETURN AK5381VTPA AK4384VTP
| +-------+ +-------+
| | Ain L | | AoutL |- - - -> PHONE L
IN ---+--------------->| Ain R | | AoutR |-------> PHONE R
| | | |
+----| DoutL | | Din L |<---+
+-|----| DoutR | | Din R |<-+ |
| | +-------+ +-------+ | |
| | | |
| | DSP(FXD03) | |
| | +---------------+ | |
| +-->| SI[1]L SO[1]L |-----|-+
+---->| SI[1]R SO[1]R |-----+
+---------------+
Internal Check 6. TUNER
The DSP outputs the sine wave signal and this item inspects the returned signal level to the INPUT
by CPU. The test cable1 is needed for the connection of PHONE-->INPUT.
1. 2217.461047Hz
2. 25.9565436Hz
Operation Check
In this Check, use the CUR_UP/CUR_DOWN to select the item, use the CUR_LEFT to return to the initial
display of the item (without during the switch Check).
When an error occurred you can start from the NG step using the WRITE switch.
Item Initial Display LED Initial Display LCD
1. Pedal trimmer adjusting All LEDs light, BANK LED meter display PDL_CLB
2. PEDAL Lower Switch BANK LED "PS" PDL_SW
3. Switch, LED All LEDs light, BANK LED rounding SW & LED
4. Binary Encoder BANK LED "E1" BIN ENC
5. Volume with 11 clicks BANK LED "C1" C11 KNOB
6. Volume without click BANK LED "A1" VOL KNOB
7. Pedal calibration BANK LED "P " PEDAL
8. LCD BANK LED "Lc" All light
9. Vacuum tube output adjusting
Check of the symmetricness
BANK LED meter TUBE TRM
10. Load Preset BANK LED 'P', all CH LEDs blinking RELOAD ?
After the last item’s check finished, TONELAB LE goes to normal mode. When “Er” is displayed
in the LED, some error has occurred.
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