Test Program; Sv Circuit Board; Sm Circuit Board; Output - Yamaha S80 Service Manual

S80

SV Circuit Board

CN1: to DM-CN19 CN2: to JK-CN1 CN3: to DM-CN7
Component side

SM Circuit Board

CN1: to DM-CN22
Component side
24
PC Circuit Board
Component side
Pattern side
SV: 2NA-V357680
SM: 2NA-V357710
1

TEST PROGRAM

Test No. Test Item Test Conditions, Judgment Criteria, etc.
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
T9 SLIDER 1-4 OK/NG, 0-127-0
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)
INDIV(1): +6.0 ± 2 dBm; INDIV(2): Less than-72.0 dBm (10 kohm load)
T19 1 kHz OUTPUT L
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
T20 1 kHz OUTPUT R
PHONES(L): Less than -64.0 dBm (33 ohm load); PHONES(R): +5.0 ± 2 dBm
T21 A/D LEVEL, JACK OK
OUTPUT (L, R): +15.0 ± 2 dBm (Line) (10 kohm)
T22 A/D -> D/A
OUTPUT (L, R): +11.5 ± 2 dBm (10 kohm)
T23 PLUG- IN1
OUTPUT (L, R): +11.5 ± 2 dBm (10 kohm)
T24 PLUG- IN2
T25 mLAN OK/NG
T26 FACTORY SET OK/NG
T27 SWP CH 1 kHz, sine wave
OUTPUT (L, R): Less than -82.0 dBm (10 kohm load)
T28 EXIT (NOISE LEVEL)
PHONES (L, R): Less than -85.0 dBm (33 ohm load)
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.
Initialized state