MIDI Check(Internal check item 7)
Just before start checking, connect "MIDI IN" and "MIDI OUT".
Hold down AMP/LINE Switch and WRITE Switch and turn on(?).
If there is no problem, the display shows "b1"(BANK LED).
Testing Cable
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(Testing Cable 1) PHONES Jack -> INPUTJack
[PHONES] (mini stereo) [INPUT](mono phone)
PHONE R --(100Ω)--+
|
PHONE L --(100Ω)--+-----> IN (TIP)
GND --------------------> GND (RING)
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(Testing Cable2) SEND Jack -> RETURN Jack
Attenuate to half the Voltage(Peak-Peak)
[SEND](phone) [RETURN](phone)
TIP ----(420(+-90)kΩ)----> TIP
GND ----------------------> RING
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End of TEST MODE instructions.