Technics RS-TR575 - Measurements and Adjustments; Adjustment Points

RS・『R575
■MEASUREMENTS AND ADJUSTMENTS
Measu『ement Condition
●Recording・level controll Maximum
●Recording・balance controll Center
●Reverse・mode selector switch；ロ
●Tape−to−tape recording−speed switch；Off
●Dolby NR switch；Off
●ATC switchl Off
●Makesure headsareclean
●Make sure capstan and pressure roIIer are clean
●Judgeable room temperature20±5。C（68±9。F）
Measu『ing inst『umen量
●EVM（Electronic Voltmeter） ●ATT（Attenuator）
●Oscilloscope ●DC voltmeter
●Digital frequency counter ●Resistor（600Ω）
●AF osclllator
NOTE＝Before adjustment，be sure to set the AF oscillator output Ievel to OdB（1kHz》：1V
Tes電tape
：灘撚黙）1・一
・Tape speed adjustment（3kHz，一10dB》；Q互CWAT
●OveraII gain adjustment and Overafrequency response
Normal reference blank tape；QZZCRA
CrO2reference blank tapel QZZCRX
Metal reference blank tapel QZZCRZ
●Adjustment Points
Tope speed
DECK
Tope speed
lDECK2：Highl
Tope speed
⊂DECK21
VR801
MOTOR RC．B．⊂DECKけ
VR802
VR803
MOTOR RC．B，⊂DECK2》
OPERATION RC．B。
◇
Shor†qip
亘）
Notes＝
●The test mode terminals on mechanism control P．C．B．
should be shorted wlth a short clip as shown above
figure．
●After the adjustment items dlsconnect the short clip．
一31一