SERVICE MANUAL

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E-F Balance (1 Track Jump) check(Without remote commander)Procedure:1. Connect oscilloscope to test point TP (TEO) on BD board.2. Turned Power switch on.3. Put disc (YEDS-18) in to play the number five track.4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)5. Check the level B of the oscilloscope's waveform and the A(DC voltage) of the center of the Traverse waveform.Confirm the following:A – B× 100 = ±7 (%)2 (A + B)1 track jump waveformCenter of the waveformB0VA (DC voltage)symmetrylevel : 500 mV ± 100 mVp-pAdjustment Location:[BD BOARD] (Conductor Side)CNU101RFIC101FOKICI02VCGNDTEOFEOIC103CNU102— 10 —
SECTION 4DIAGRAMS4-1. BLOCK DIAGRAM 4-2. CIRCUIT BOARDS LOCATIONCONNECTOR BOARDSENSOR BOARDMOTOR (TURN) BOARDMOTOR BOARDBD BOARDMOTOR (SLIDE) BOARDCD PANEL BOARDTC (A) BOARDRESISTOR BOARDLEAF SWITCH BOARDTC PANEL BOARDMAIN BOARDAUDIO BOARDTC (B) BOARD— 11 —— 12 — — 13 —
Page 1 and 2: HCD-W550SERVICE MANUALCanadian Mode
Page 3 and 4: SECTION 1GENERAL1 23 4 5 6 789@∞@
Page 5 and 6: 2-3. MAIN BOARD, RESISTOR BOARD, FR
Page 7 and 8: 2. Turn the adjustment screw for th
Page 9: CD SECTIONNote :1. CD Block is basi
Page 24 and 25: Pin No.Pin NameI/ODescription51LED
Page 26 and 27: 5-2. FRONT PANEL SECTION6263646667T
Page 28 and 29: 5-4. CD MECHANISM DECK SECTION-2(CD
Page 30 and 31: 5-6. TAPE MECHANISM DECK SECTION-1(
Page 32 and 33: SECTION 6ELECTRICAL PARTS LISTAUDIO
Page 34 and 35: BDCD PANELRef. No. Part No. Descrip
Page 36 and 37: MAINRef. No. Part No. Description R
Page 38 and 39: RESISTOR SENSOR TC (A) TC (B) TC PA

SERVICE MANUAL

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