Yamaha MCR-730, Руководство по обслуживанию

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DRX-730/NX-E700
DRX-730/NX-E70
0
8 . K E Y : 5 0 0
9 - 1 P 2 x x x x
9 - 2 P 3 x x x x
9 - 3 D C x x x x
9 - 4 N O P R T
9 - 5 N O P R T
9 - 6 C L E A R H I S T
KEY (K0)
When the A/D value of the panel key becomes out of the specified range,
normal operation will not be available. Check each panel key for the constant
of the voltage dividing resistance, soldered condition, etc, referring to the
table below.
(Reference voltage: 5 V = 500)
ohm 0 + 1.2 k + 1.2 k + 7.9 k + 12.7 k + 20.7 k ∞
V 0 - 0.2 0.3 - 0.7 0.8 - 1.7 1.8 - 2.7 2.8 - 3.2 3.3 - 4.2 4.7 - 5.0
Value 0 - 20 30 - 70 80 - 170 180 - 270 280 - 320 330 - 420 470 - 500
pin 89
(KEY0)
OPEN/CLOSE PLAY/PAUSE STOP
(SEARCH/SKIP -
and
SEARCH/SKIP +)
SEARCH/SKIP - SEARCH/SKIP + KEY OFF
Key input for AD port
Pull-up resistance 10 k-ohms
9. PROTECTION HISTORY
The 5 protection histories are displayed.
Protection history 1
Protection history 2
Protection history 3
Protection history 4
Protection history 5
Protection history clear
Press the “OPEN/CLOSE” key, and the protection history will be initialized.
Example
Example
Example
Example
Example