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RS-X933
Measurement Condition
¢ Rec. level control; Maximum
e¢ Dolby NR switch; Off
® Timer switch; Off
* Make sure heads are clean
e Reverse-mode selector switch;
—_—.
Make
sure capstan and pressure roller are clean
¢ Edit-recording tape-speed selector; X1
e Judgeable room temperature 20+5'C (68+9° F)
Measuring instrument
¢ EVM (Electronic Voltmeter)
© ATT (Attenuator)
© Oscilloscope
¢ DC voltmeter
© Digital frequency counter
e Resistor (6009)
e AF oscillator
Test tape
© Head azimuth adjustment (8kHz, —20dB); QZZCFM
¢ Playback gain adjustment (315Hz, 0dB); QZZCFM
« Tape speed adjustment (3kHz, —10dB); QZZCWAT
¢ Overall frequency response, Overall gain adjustment
e Playback frequency response (315Hz, 12.5kHz, 10kHz,
Normal reference blank tape ; QZZCRA
8kHz, 4kHz, 1kHz, 250Hz, 125Hz, 63Hz, —20dB);
CrO, reference blank tape; QZZCRX
QZZCFM
Metal reference blank tape; QZZCRZ
e Adjustment Points
MODE TEST POINT
OVERALL FREQUENCY RESPONSE
(Soldered Surface)
DECK A: VR303(Lch) (VR302 (Rch))
Line
Line
| (EG)
area only]
PLAYBACK GAIN ADu.
DECK B: VR3 (Lch) {VR4(Rch)}
DECK A: VR5 (Lch) {VR6(Rch)}
~K
VR301
6
VR303
VR902
] vR302
a
appa
vrs [@
URS Ope ee
TP3
h> OVERALL GAIN ADJ.
VR7
DECK A: VR7 (Lch) {VR8(Rch)}
TP3
TAPE SPEED ADJ.
DECK B: VR902(X1), VR901 (X2)
ERASECURRENTADJ.
ERASE CURRENT
DECK A: VR903 (X1)
DECK A: VR301
ADJ. TEST POINT
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