Yamaha R-N402 Service Manual page 35

P1-6. KEY
Panel key is detected.
When the A/D conversion value of the panel key becomes out of the specified range, normal operation will not
be available.
In that case, check the constant of voltage dividing resistor, solder condition, etc. Refer to table.
* When "P1-6. KEY" menu is selected, keys become inoperable due to detection of the values of all keys.
However, it is possible to advance to the next menu by turning the VOLUME knob.
(Reference voltage: 3.3 V=255)
Display
A/D value Key name
000 – 011 INP+
012 – 034 INP-
035 – 059 TRE+
060 – 083 TRE-
084 – 109 BASS+
110 – 135 BASS-
136 – 161 RTN
162 – 186 ENTER
255 OFF
P1-6
KY:255/255 OFF
KEY0
A/D value
INPUT a 000 – 011
INPUT 012 – 034
TREBLE + 035 – 059
TREBLE – 060 – 083
BASS + 084 – 109
BASS – 110 – 135
RETURN 136 – 161
162 – 186
SELECT
PUSH – ENTER
(jog dial)
187 – 213
̶
214 – 241
Key name
KEY1
KEY0
Display
Key name
TUN+ TUNING
TUN- TUNING
PST+
PST-
BAND
MEM
MODE
DISP
SPA SPEAKER A
SPB
SPEAKER B
255 OFF
R-N402/R-N402D
KEY1
PRESET
PRESET
BAND
MEMORY
MODE
DISPLAY
̶
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