Korg AX3000G Service Manual

How to start. Turn the power􀀁 on by pressing following switches for each operation as follows. LCD shows AX3000G (or AX3000B) and software version number. Each checking mode starts when you release from those switches. Before the power on, please connect the testing cable into both PHONE and INPUT jack. Also, put another testing cable into SEND and RETURN jack. Then rotate the LEVEL knob (next to PHONE jack) into maximum. The following inspection items are run automatically. During the procedure, item number and step are shown on BANK LED. If any item is NG (no good), item name with NG is shown on LCD and BANK LED (item number and step number) stops with blinking. This is to check the connection between CODEC’s PD (pin14) and DSP (Pin52-CPU contolled). Check Input level with the same setting as Step 1 of LEVEL check and confirm if it is 0 data output (in “mute”state). Output 1kHz sine wave from DSP to examine the a level returning to Input. “PHONE-> INPUT” and “SEND -> RETURN” are supposed to be connected by testing cables. The following is Routing, output level and input level (within an allowance) of each step.

Korg AX3000G Service Manual

INTERNAL CHECK - 6.TUNER Output sine wave from AX1L of DSP2 Internal Check 6. TUNER ( PHONE-->INPUT is needed to be connected by the testing cable. When the error occured, "TUNER HI", "TUNERLO"(LCD) will be shown. CUR_UP/CUR_DOWN Switch--Selection of Test Item CUR_LEFT Switch. Return to the initial display of Item.(Except testing the switch) WRITE Switch. From NG Step, restart the checking. Operation Check 1. Pedal half-fixed resistance adjustment "PDL_CLB"(LCD) 1_1. Put the EXP Pedal MAX, then adjust the pedal's half fixed resistance and make the amount of LCD be around 110. 1_2. Check that all 2-color LEDs are blinking Green<->Red simultaneously. 1_5. Check the rest of RED LED are all lighting. 1_6. Press the CUR_RIGHT Switch. Operation Check 2. Switch, LED "SW&LED"(LCD) 2_1. Check all BANK LED Segments can be lighting and press CUR_RIGHT Switch. 2_2. Check BANK display and LED display and press set SW.

Operation Check. Binary Encoder "BIN ENC"(LCD). DRIVE/AMP TYPE Select Knob Adjust the knob to the top position and rotate the knob in clockwise direction. Operation Check. Volume with 11 Click "CLL KNOB". Turn the knob to MAX(most right). If the knob is initially MAX, rotate back more than 1 Click then turn it to MAX. After the Dot of LED start lighting, repeat the decrement. Same as above, on MODULATION SELECT Knob(The initial display is BANK LED "C2"), Same as above, on DELAY SELECT Knob(The initial display is BANK LED "C3"), Same as above, on REVERB SELECT Knob(THe initial display is BANK LED "C4"), When hold down #AMP/LINE Switch and press WRITE, EXIT/TUNE, it is possible to move the step.

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