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COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE...
DX-7555 SERVICE PROCEDURE-1 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to follow Laser Diode Properties carefully the instructions below when servicing. Material: GaAS/GaAlAs Wavelength: 760-800nm WARNING!! Laser output: max. 0.5mW* Emission Duration: continuous SERVICE WARNING : DO NOT APPROACH THE *This output is the value measured at a distance about 1.8mm...
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DX-7555 SERVICE PROCEDURE-2 1. Initialize the unit. (1) Press and hold down the STOP [ ] button, then press the FF (fast forward) [ ] button. All segments light up. (2) Press and hold down the STOP [ ] button, then press the PUSH TO ENTER (JOG) button.
DX-7555 EXPLODED VIEWS OF MECHANISM-2 CD DRIVE UNIT : KSM-213CLCM PARTS LIST REF. NO. PART NO. (SN) DESCRIPTION Q'TY X-2625-877-1 Motor chassis ass'y X2625-769-1 Motor gear ass'y 2626-908-01 Sled shaft 24810023 Gear (A) (S) 7621-255-15 P2 x 3, Screw 24840008...
DX-7555 U01 : MAIN CIRCUIT PC BOARD NAAR-8645 SCHEMATIC DIAGRAMS-1 Q9001 NOTE 78M05 VSW_CPU THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY. REPLACE ONLY WITH PART NUMBER SPECIFIED. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL) ELECTROLYTIC CAPACITORS ARE IN uF/WV.
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DX-7555 SUPER PRECISION CLOCK PC BOARD (NADG-8725) No PC board view. Look over the actual PC board on hand. U8001A U8001A Q8101A Q8101B X8601 Q8101B U8001 Q8101A U8001 C8504 J1021 J1022 J1024 Q8101 J1017 J1023 J1020 Q8101 C8102 R8600 R8800...
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-2 Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -1/4 BLOCK DIAGRAM XRST TEST1 TRST IREQ XTAO XLAT2 XTACN DATA2...
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-3 Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -2/4 TERMINAL DESCRIPTION Pin No. Pin name Description LR clock output.
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-4 Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -3/4 TERMINAL DESCRIPTION (Continued) Pin No. Pin name Description Tracking drive output.
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-5 Q2003 : CXD3014R (CD Digital Signal Processor with Built-in RF Amplifier and Digital Servo + Digital High & Bass Boost + CODEC) -4/4 TERMINAL DESCRIPTION (Continued) Pin No. Pin name Description Test mode set.
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-6 Q4001 : WM8740 (24-BIT DAC) -1/2 BLOCK DIAGRAM...
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DX-7555 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-7 Q4001 : WM8740 (24-BIT DAC) -2/2 TERMINAL DESCRIPTION...
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DX-7555 FL TUBE VIEW Q8101 : HNV-13SS12T DVD - AUDIO SACD V CD VIDEO OFF RANDOM MEMORY D PRO LOGIC TITLE GROUP TRACK CHP PROGRAM TOTAL REMAIN PROGRESSIVE (1G-10G) GROUP REMAIN TITLE TOTAL PRO LOGIC TRACK SACD -AUDIO PROGRAM MEMORY...
DX-7555 ADJUSTMENT PROCEDURE ADJUSTMENT OF MASTER CLOCK FREQUENCY [When] 1. Exchange super precision clock PC board ass'y (NADG-8725). 2. Exchange IC X001 (Crystal), IC Q9005 (MPC29M33HF), and IC Q8005 (Main microprocessor). [Procedure] 1. Connect the frequency counter to the test point P703 on main circuit PC board (NAAR-8645).
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DX-7555 PACKING PROCEDURE A804 A806 A809 A805 80 cm A810 A807 A801 A808 A803 A802 x 2 pcs. A606 A606 A602 A606 (INNER) A600 <R> A606 (L & R) A800 Front side A604 (OUTER) Right side marking A606 A600 <L>...
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