Yamaha RX-V100D Service Manual page 25

11. AD DATA CHECK
This menu is used to display the A/D conversion value of the terminals which detect panel keys of the main unit and
protection functions in % using the sub-menu. During signal processing, the condition before execution is maintained.
When K0/K1 menu is selected, keys become non-operable due to detection of the values of all keys. However, it is possible
to advance to the next sub-menu by turning the VOLUME knob of the main unit. When using this function, note that turning
the VOLUME knob more than 2 clicks will cause the volume value to change.
* The numeric value in the figure is an example for reference.
DC/PS (protection detection)
DC: DC protection value
Normal value: 1 to 13 (Reference: 5V=100% )
When DC is out of the normal value range, the protection function works to turn off the power.
PS: Power supply voltage protection value
Normal value: 18 to 33 (Reference: 5V=100% )
When PS is out of the normal value range, the protection function works to turn off the power.
THM (temperature detection)
THM: Normal value: 9 to 177 (Reference: 5V=500)
IMP SW/POWER LIMIT
(Impedance/power limiter detection)
IMP: Not applied to these models.
PL: Power limiter detection value
The voltage value of pin No. 92 of IC451 is displayed, using 5V/256 as standard.
The port (No.3) output is controlled by using the input voltage value of pin No. 92 of IC451.
K0/K1 (Panel key of main unit)
A/D of the key fails to function properly when the standard value is deviated. In this case, check the constant of partial
pressure resistor, solder condition, etc. Refer to table 1.
Not applied to this model.
[Table 1]
Display (%) K0
0 - 6 -
7 - 13 -
14 - 21 -
22 - 31 -
32 - 41 INPUT MODE
42 - 53 STRAIGHT
54 - 63 TONE CONTROL
64 - 72 PRESET/TUNING
73 - 80 SPEAKER B
81 - 88 SPEAKER A
89 - 95 -
96 - 100 KEY OFF
K1
-
-
-
-
MULTI CH INPUT
FM/AM
A/B/C/D/E
PRESET/TUNING
PRESET/TUNING
MEMORY
TUNING MODE
KEY OFF
RX-V100D
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