Fan/Ad; Ky0 Ky1 Recout; Thm Prd Prv - Yamaha RX-V3000RDS Service Manual

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10. FAN/AD

The sub-menu of this menu displays the A/D conversion value of the CPU (function circuit board IC526) which
detects the keys and protection functions of the main unit in %. (reference voltage 5V: 100%)
It also displays the history of the fan being driven. When in KY0/KY1/RECOUT page, it is not possible to operate the
keys of the main unit because the values of all keys are detected. But one click on the VOLUME of the main unit will
cancel this function and sets to the next sub-menu. If this has occurred, restore the DIAG menu being used for
testing. The signal processing state remains the same as that before executing this menu.
10.
FAN/AD
FAN HISTORY:000
bit
2
1 0
0
0 0
FAN 3.0V
FAN 3.7V
FAN 5.0V
When there is a history of the fan operation: 1

KY0 KY1 RECOUT

100 100 060

THM PRD PRV

028 006 009
The above figures are ex-
amples for reference.
FAN HISTORY (History of fan being driven) [Remote control code: – – – – ]
The voltage value detected from the temperature detect circuit is read by the A/D function of
the microprocessor as a data. Based on that temperature data, the fan driving speed is
controlled in 3 stages. How the fan has been driven is displayed as the history.
* Selecting "RESERVED" for DIAG menu No.9 will clear the history.
KY0/KY1/RECOUT (Detection of key scan/REC OUT)[Remote control code: – – – – ]
KY0/KY1: Panel key of the main unit (10% step)
• When the standard value is deviated by ±4%, KEY A/D
fails to function properly. In this case, check the circuit
voltages, soldering condition, etc.
Indicate
KY0
0
INPUT w
10
INPUT q
20
INPUT MODE
30
DIAG(*1)
40
6CH INPUT
50
EFFECT
60
SPEAKERS A
70
SPEAKERS B
80
PROC. DIRECT
90
BASS EXTENS.
100
KEY OFF state
(*1) : "EFFECT" and "6CH INPUT" keys pressed
simultaneously
THM/PRD/PRV [Remote control code: 7A—0B (CD SKIP –)]
(Detection of the temperature of the heat sink and protection function)
THM: Detection of the temperature of the heat sink (Normal value: 6~40) 0.3V~ 2.0V (reference voltage)
At 5% or less, the protection function works to turn off the power. At more than 40%,
possibility is that there is an error in the temperature detection system.
PRD: Protection value for DC detection (Normal value: 1~13) 0.05V~ 0.65V (reference voltage)
When the value is out of the normal value range, the protection function works to turn
off the power.
PRV: Protection value for power voltage (Normal value: 5~15) 0.25V~ 0.75V (reference voltage)
When the value is out of the normal value range, the protection function works to turn
off the power.
Indicate
KY1
0
DSP PROG.
10
PRESET/TUN.
20
FM/AM
30
MEMORY
40
TUNING MODE
50
PTY START
60
PTY MODE
70
RDS EON
80
RDS MODE
90
100
KEY OFF state
RX-V3000/RX-V3000RDS
RECOUT: Indicates se-
lected REC OUT position
Indicate
REC OUT
0
MD/TAPE
15
SAT
30
CD
44
V-AUX
60
SOURCE
76
CABLE
92
PHONO
122
CD-R
137
VCR 1
153
TUNER
170
VCR 2/DVR
186
DVD
202
D-TV/LD
(AD conversion value 100%: 255)
24

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