Midi Loopback Check; Lcd Contrast Check; Ch A/B Function (Sw) Check; Tap Function2 (Sw) Check / Wah/Efx1 (Sw) Check - Zoom g9.2tt Service Manual

14. MIDI LOOPBACK check

Connect MIDI cable to [MIDI IN] and [MIDI OUT] (J401)
PUSH [HOLD MANUAL BANK↓] FOOT SW (SW22).
[HOLD MANUAL BANK↓] LED lights red.
LCD displays [MIDI LOOPBACK]. Confirmation of data transmission will be done.
If transmission is OK, LCD displays [MIDI LOOPBACK Success], 7 segment LED displays [ok].
Otherwise, LCD displays [MIDI LOOPBACK 00 timeouted], 7 segment LED displays [nG].

15. LCD CONTRAST check

Push [HOLD BYPASS/TUNER] FOOT SW (SW24).
[HOLD BYPASS/TUNER] LED lights red.
LCD displays [LCD CONTRAST 0123456789ABCDEF].
Check deepness of LCD contrast.
7 segment LED displays [01]-[04]. [01] presents most pale, [04] presents most deep, respectively.
16. CH A/B FUNCTION1 (SW) check
Press the [CH A/B FUNCTION1] FOOT SW (SW26).
Make sure that the [CH A/B FUNCTION1] LED lights green, and LCD is displayed [CH A/B
FUNCTION1].
The [CH A/B FUNCTION1] LED repeats [green -> red -> orange -> light off -> green -> red ...]
by pressing the [CH A/B FUNCTION1] FOOT SW.
*Make sure that there is no defect on the sound (abnormal noise .etc)
17. TAP FUNCTION2 (SW) check
Press the [TAP FUNCTION2] FOOT SW (SW 628).
Make sure that the [TAP FUNCTION2] LED lights green, and LCD is displayed [TAP
FUNCTION2].
The [TAP FUNCTION2] LED repeats [green -> red -> orange -> light off -> green -> red ...] by
pressing the [TAP FUNCTION2] FOOT SW.
*Make sure that there is no defect on the sound (abnormal noise .etc)
18. WAH/EFX1 (SW) check
Press the [WAH/EFX1] FOOT SW (SW21).
Make sure that the [WAH/EFX1] FOOT SW lights red, and LCD is displayed [TUBE
ENERGIZER].
The 7segment LED turns [on] and [oF] by pressing the [WAH/EFX1] FOOT SW.
*Make sure that there is no defect on the sound (abnormal noise .etc)
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