UX-P3R
Electrical Performance
Items Measurement Measurement method Standar Adjustingd
conditions Values positions
Adjustment ofMode: Forward or 1 With the recording and playbackAC-225 VR31
recording biasreverse mode mechanism, load the test tapes (A: 4.20 C-514 toA
currentRecording mode TYPE and AC-225 to TYPE ), and setAC-514
(ReferenceTest tape the mechanism to the recording and: 4.0 A
Value): AC-514 to TYPE pausing condition in advance.
and AC-225 to 2 After connecting 100 in series to the
TYPE recorder head, measure the bias current
Measurement output with a valve voltmeter at both of the
terminal terminals.
: Both recording and 3 After resetting the [PAUSE] mode, start
headphone terminals recording. At this time, adjust VR31 for Lch
and VR32 for Rch so that the recording
bias current values become 4.0A (TYPE
) and 4.20A (TYPE ).
Adjustment ofReference frequency 1 With the recording and playbackOutput
recording and: 1kHz and 10kHz mechanism, load the test tapes (AdeviationC-514 toVR31
playback (REF.: -20dB) TYPE ), and set the mechanism to thebetween
frequencyTest tape recording and pausing condition in1kHz and
characteristics: AC-514 to TYPE advance.10kHz
Measurement input 2 While repetitively inputting the ref: -1dBerence2dB
terminal frequency signal of 1kHz and 10kHz from
: OSC IN OSC IN, record and playback the rape.
3 While recording and playback the test tape
in TYPE , adjust VR31 for Lch and VR32
for Rch so that the output deviation
between 1kHz and 10kHz becomes
-1dB2dB.
Reference Values for Electrical Function Confirmation Items
Measurement Standar Adjustingd
Items conditions Measurement method Values positions
Recording Forward or reverse 1 While changing over to and from BIAS 1 100 kHz
bias Test tape and 2, confirm that the frequency is6 kHz
frequency : TYPE (AC-514) changed.
Measurement 2 With the recording and playback
terminal : BIAS TP on mechanism, load the test tape.
P.C. board (AC-514 to TYPE ), and set the
mechanism to the recording and pausing
condition in advance.
3 Confirm that the BIAS TP frequency on the
P.C. board is 100kHz 6kHz.
Eraser Forward or reverse 1 While recording and playback mechanism,TYPE
currentRecording mode load the test tapes (AC-514 to : 120 mATYPE
(Reference Test tape and AC-225 to TYPE ), and set the TYPE
value): AC-514 to TYPE mechanism to the recording and pausing: 75 mA
and AC-225 to conditions in advance.
TYPE 2 After setting to the recording conditions,
Measurement connect 1W in series to the eraser head on
terminal : Both of the the recording and playback mechanism
eraser head terminals side, and measure the eraser current from
both of the eraser terminals.
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ACEC
