Accuphase DP-77 Service Information

Accuphase Laboratory Inc.
Issued 2003-12-10
MODEL : DP-77
機種
SUBJECT :(1)
To prevent the output becomes nothing in unusual
(2) To be improve the reliability of lock in at external in
項目 :電源オン時、出力無しとなる可能性を防止する
:外部入力時、ロック外れになるのを防止する 。
Details ;(1).At the time of a power supply on,the IC8 of DSP Ass'y carries out incorrect
operation,and output relay does not turn on.
Countermeasure is follows,remove the R5 (22
Ω
) and add the jumper to both end
of R5 that located on DSP Ass'y (724-0055-00).
(2) An input is put into a coaxial input or an optical input, An output may be
interrupted when it is made to operate.
Countermeasure as follows, change the resistor value of R105 & R108 from 150
Ω
to 330
Ω
that located on DSP Ass'y(724-0055-00).
詳細; POWER ON時 DSP Ass'y内IC8 CS8427が誤動作し 出力ﾘﾚｲがONしない。
対策は DSP Ass'y(724-0055-00) R5(22Ω)削除しｼﾞｬﾝﾊﾟｰする。
; COAXおよびOPTに入力をいれ、出力すると音がとぎれる場合があります。
対策はDSP Ass'y(724-0055-00)内抵抗 R105,108(150Ω→330Ω)の定数を
変更します。
－１１－
DSP Ass'y (724-0055-00)
Jumper R5 Jumper Lead 1pcs.
Resistor R105,108 RD142CA331J(330Ω) 2pcs.
(1)Remove
the DSP Ass'y
本体からDSP Ass'yを外す。
(2)Replace
the resistors and add the jumper wire.
DSP Ass'y内R5の抵抗
,
削除しジャンパーに変更します。
R105,108の抵抗を330Ωに変更します 。
(RD142CA151J→RD142CA331J)
Jumper
R5
R105
R108
150
Ω→
330
Ω
Service Information
An applicable serial number as follows, B3Y201 to B3Y300
該当 ｼﾘｱﾙ番号は B3Y201～ B3Y300
DSP
Assembly
DSP
Ass'y
(724-0055-00)
No. DP-77-001

Accuphase DP-77 Specifications

Optical Specifications

SACD wavelength	650 nm
CD wavelength	780 nm
Optical output wavelength	660 nm

Digital Processor Specifications

Sampling frequencies	32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz
High sampling frequencies	176.4kHz, 192kHz
Dynamic range	114 dB

Power

AC voltage	120V/230V 50/60Hz
Power consumption	24 W
Net weight	17.7 kg

Weight and Dimensions

Width	475 mm
Height	151 mm
Depth	397 mm