Yamaha htr-5890, Руководство по обслуживанию

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HTR-5890
28
HTR-5890
IMP SW/POWER LIMIT (Impedance/power limiter detection)
IMP: (Not applied to this model)
PL: Power limiter detection value
The voltage value of pin No. 135 of IC520 is displayed, using 5V/256 as standard.
Based on the input voltage value of pin No.135 of IC520, the output of pins No.6 (LC1) and No.7 (LC2) of IC505 is
controlled.
Speaker impedance setting During normal operation When limiter is operating Value for starting limiter operation Value for canceling limiter operation
7CH STEREO
LC1=L LC1=H
or
LC2=H LC2=H
184 157
6 ohms EXT8CH̲INPUT
Other than those LC1=L LC1=H
184 157
on the above LC2=H LC2=L
7CH STEREO
LC1=L LC1=H
or
LC2=L LC2=L
163
157
8 ohms EXT8CH̲INPUT
Other than those LC1=L LC1=L
157
on the above LC2=L LC2=H
163
K0/K1 (Panel key of main unit)
A/D of the key fails to function properly when the standard value is deviated by
±
4%. In this case, check the constant of
partial pressure resistor, solder condition, etc. Refer to table below.
(Reference voltage: 5V=100%)
Display K0 K1
00+2 PRESET/TUNING –
10
±
2 PRESET/TUNING SPEAKERS A
20
±
2 PRESET/TUNING SPEAKERS B
30
±
2 FM/AM INPUT MODE
40
±
2 MEMORY A/B/C/D/E
50
±
2 TUNING MODE PURE DIRECT
60
±
2 – TONE CONTROL
70
±
2 – STRAIGHT/EFFECT
100 KEY OFF KEY OFF
(Not applied to this model)
THM/FAN OUT (temperature detection/fan drive level)
THM: Temperature detected value
Normal value: 10 to 139 (Reference voltage: 5V=500% )
Fan: Current fan drive level on the left and the past fan drive history on the right.
Display H M L
fan drive level HIGH MID LOW
REC-OUT (Select position)
Not applied to this model.