Yamaha CRX-040 Service Manual page 44

Micro component system cd receiver/speaker
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CRX-040/CRX-140/NS-BP80
7.
AD DATA CHECK
This menu is used to display the A/D conversion
value of the microprocessor which detects panel keys
of this unit and protection functions by using the sub-
menu.
7-1
PS1
Power supply voltage detection
Normal value: 85 to 195
*
If PS1 becomes out of the normal value
range, the protection function works to turn
off the power.
7-2
PS2
Power supply voltage detection
Normal value: 57 to 99 (iPod not connection)
*
If PS2 becomes out of the normal value
range, the protection function works to turn
off the power.
7-3
PS3
Power supply voltage detection
Normal value: 131 to 226
*
If PS3 becomes out of the normal value
range, the protection function works to turn
off the power.
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(+12, +9.5T, +3.3M, -21D)
(Reference voltage: 3.3 V = 255)
7 - 1   P S 1 :   1 4 6
(+7.2MTR, +3.3D1, +3.3ABASE,
+5.1IPOD, -21D)
96 to 144 (iPod connection)
(Reference voltage: 3.3 V = 255)
7 - 2   P S 2 :   1 1 8
(+15FL, +10HP)
(Reference voltage: 3.3 V = 255)
7 - 3   P S 3 :   1 9 9
7.  AD DATA CHECK
本機パネルキー、プロテクションなどを検出してい
るメインマイコンの A/D 変換の値を、サブメニュー
で表示します。
7-1 
PS1
電源電圧 の検出
(+12A、+9.5T、-21D)
正常値:85 〜 195
(基準電圧:3.3 V = 255)
※  PS1 が正常値を外れるとプロテクションが
働き、電源が切れます。
7-2 
PS2
電源電圧の検出
(+7.2M T R、+3.3D1、+3.3A B A S E、
+5.1IPOD、-21D)
正常値:57 〜 99(iPod 未接続時)
96 〜 144(iPod 接続時)
(基準電圧:3.3 V = 255)
※  PS2 が正常値を外れるとプロテクションが
働き、電源が切れます。
7-3 
PS3
電源電圧の検出
(+15FL、+10HP)
正常値:131 〜 226
(基準電圧:3.3 V = 255)
※  PS3 が正常値を外れるとプロテクションが
働き、電源が切れます。

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