Yamaha htr-5890 Panduan Servis - Halaman 28

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Yamaha htr-5890 Panduan Servis
HTR-5890
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.
REC-OUT (Select position)
Not applied to this model.
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
or
6 ohms EXT8CH_INPUT
Other than those
on the above
7CH STEREO
or
8 ohms EXT8CH_INPUT
Other than those
on the above
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%)
28
Display
H
fan drive level HIGH
(Not applied to this model)
LC1=L
LC1=H
LC2=H
LC2=H
LC1=L
LC1=H
LC2=H
LC2=L
LC1=L
LC1=H
LC2=L
LC2=L
LC1=L
LC1=L
LC2=L
LC2=H
Display
K0
00+2
PRESET/TUNING
10±2
PRESET/TUNING
20±2
PRESET/TUNING
30±2
FM/AM
40±2
MEMORY
50±2
TUNING MODE
60±2
–
70±2
–
100
KEY OFF
M
L
MID
LOW
184
184
163
163
K1
–
SPEAKERS A
SPEAKERS B
INPUT MODE
A/B/C/D/E
PURE DIRECT
TONE CONTROL
STRAIGHT/EFFECT
KEY OFF
157
157
157
157