Test Program - Yamaha CS6x Service Manual

TEST PROGRAM

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