Test Mode - Roland BOSS KATANA-50 Mk II Service Notes

Oct. 2019

Test Mode

Items Required
• Computer
• Oscillator
• Oscilloscope
• Noise meter
• FS-5U (x 2) or FS-6 (x 1)
• Y cable (having one 1/4-inch stereo phone plug and two 1/4-inch
monaural phone plugs) or 1/4-inch stereo phone cable
• 1/4-inch stereo phone cable
• 1/4-inch stereo phone cable with 33 Ω load resistors (connected 33 Ω load
resistors to each location between L-GND and between R-GND)
• USB cable
• 1/4-inch monaural phone short plug
• Stereo miniature phone open plug
• Load resistor (4 Ω, 300 W)
• Driver for KATANA
* Obtain this from the following web page, and install it on the computer just
described.
https://www.boss.info/global/support/
* Set the POLARITY switch and the MODE switch on the foot switch as shown
below.
fig.FS-5U.eps
fig.FS-6.eps
* If possible, do not connect the measuring devices such as oscilloscope and noise
meter to the earth.
* When using a measuring device with multiple inputs, use only one input and do
not feed any signals to the other jacks. Or else, the internal circuit of this product
may be damaged.
22
FS-5U
FS-6
Entering the Test Mode
1.
Turn all knobs all the way counterclockwise.
2.
Hold down CH1 and CH2 and turn on the power.
3.
Continue to hold down CH1 and CH2 until all LEDs light up, then release
your fingers.
After all of 5 EFFECTS buttons, TAP, CH1, CH2, and PANEL flash twice,
you will enter the first test item (1. Model Check (p. 23)).
* If you are proceeding to 9. Signal Level Check (p. 26), 10. Noise Check (p.
27), then disconnect the speaker cable from the speaker, and attach a load resistor
(4 Ω, 300 W) to the speaker terminals (between red and black), before going into
the Test Mode.
* Be very careful so that the speaker terminals never touch to the other conductive
portion.
Quitting the Test Mode
Switch off the power.
Test Items
1. Model Check (p. 23)
2. Version Check (p. 23)
3. Switch/LED Check (p. 23)
4. Selector Check (p. 24)
5. Volume Check (p. 24)
6. Jack Sense & Foot Switch Check (p. 25)
7. USB Check (p. 25)
8. Device Check (p. 25)
9. Signal Level Check (p. 26)
10. Noise Check (p. 27)
Skipping the Test Items
While the unit is in 1. Model Check (p. 23) or 2. Version Check (p. 23),
you can skip to each test item with the following operation.
• Press PANEL:
The unit skips to 3. Switch/LED Check (p. 23).
• Hold down PANEL and press BOOSTER:
This unit skips to 5. Volume Check (p. 24).
• Hold down PANEL and press MOD:
The unit skips to 6. Jack Sense & Foot Switch Check (p. 25).
• Hold down PANEL and press FX:
The unit skips to 8. Device Check (p. 25).
• Hold down PANEL and press DELAY:
The unit skips to 9. Signal Level Check (p. 26).
KTN-50_2