Yamaha CS6X, Руководство по обслуживанию

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CS6X
21
TEST PROGRAM
T1 RAM READ/WRITE OK/NG, (MAIN SRAM/WAVE DRAM)
T2 RAM BATTERY OK/NG, 2.7V or more, Less than 3.5V
T3 WAVE ROM OK/NG
T4 LCD ON/OFF blinking alternately
T5 PANEL SWITCH/LED OK/NG
T6 ENCODER OK; 0 to +127(0) to -127
T7 KEYBOARD OK, KEY CODE/KEY TOUCH
T8 KNOB A-2 OK/NG, 64-127-0-64
T10 KNOB 1-4 OK/NG, 64-127-0-64
T11 KNOB 5-14 OK/NG, 64-127-0-64
T12 CONTROLLER OK/NG, 64-127-0-64 (PB), 0-127-0 (MW), 0-107-0 (AT)
T13 FOOT CONTROL SWITCH OK, 0-127-0
T14 BREATH CONTROLLER OK/NG, 127-0-127
T15 CARD OK/NG
T16 MIDI IN/OUT/THRU OK/NG THRU Confirmation
T17 HOST SELECT OK/NG
T18 TO HOST OK/NG
OUTPUT(L): +6.0
±
2 dBm; OUTPUT(R): Less than -72.0 dBm (10 kohm load)
T19 1 kHz OUTPUT L INDIV(1): +6.0
±
2 dBm; INDIV(2): Less than-72.0 dBm (10 kohm load)
PHONES(L): +5.0
±
2 dBm; PHONES(R): Less than -64.0 dBm (33 ohm load)
OUTPUT(L): Less than -72.0 dBm (10 kohm load); OUTPUT(R): +6.0
±
2 dBm
T20 1 kHz OUTPUT R INDIV(1): Less than -72.0 dBm (10 kohm load); INDIV(2): +6.0
±
2 dBm
PHONES(L): Less than -64.0 dBm (33 ohm load); PHONES(R): +5.0
±
2 dBm
T21 A/D LEVEL, JACK OK
T22 A/D -> D/A OUTPUT (L, R): +15.0
±
2 dBm (Line) (10 kohm)
T23 PLUG- IN1 OUTPUT (L, R): +11.5
±
2 dBm (10 kohm)
T24 PLUG- IN2 OUTPUT (L, R): +11.5
±
2 dBm (10 kohm)
T25 mLAN OK/NG
T26 FACTORY SET OK/NG Initialized state
T27 SWP CH 1 kHz, sine wave
T28 EXIT (NOISE LEVEL)
OUTPUT (L, R): Less than -82.0 dBm (10 kohm load)
PHONES (L, R): Less than -85.0 dBm (33 ohm load)
Test Conditions, Judgment Criteria, etc.
Measuring instruments: frequency counter, oscilloscope, AC voltmeter (JIS-C curve type), distortion meter
(with flat filter), keyboard amplifier, etc.
Jigs: MIDI cable, specially designed expansion board, etc.
Test No. Test Item