Panasonic CX-3206 free download

File name CX-3026.pdf

Service Manual CD MECHANISM MODULE ORDER NO. CRT2944 CX-3026 - This service manual describes the operation of the CD mechanism module incorporated in models listed in the table below. - When performing repairs use this manual together with the specific manual for model under repair. Model DEH-P250/XM/UC DEH-P250/XN/UC DEH-P2500/XM/UC DEH-P2500/XN/UC DEH-P25/XM/UC DEH-P25/XN/UC DEH-P2530R/XM/EW DEH-P2530R/XN/EW DEH-P2500R/XM/EW DEH-P2500R/XN/EW DEH-P2500RB/XM/EW DEH-P2500RB/XN/EW DEH-P2550/XM/ES DEH-P2550/XN/ES DEH-P350/XM/UC DEH-P350/XN/UC DEH-P3500/XM/UC DEH-P3500/XN/UC DEH-P4550/XM/ES DEH-P4550/XN/ES DEH-P4500R/XM/EW DEH-P4500R/XN/EW Service Manual CRT2981 CD Mechanism Module CXK5600 CRT2982 CRT2983 CRT2984 CRT2985 CONTENTS 1. CIRCUIT DESCRIPTIONS ...2 2. MECHANISM DESCRIPTIONS...20 3. DISASSEMBLY ...22 PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 2002 K-ZZA. NOV. 2002 Printed in Japan 1 2 3 4 A 1. CIRCUIT DESCRIPTIONS Recently, Many CD LSIs have been one-chip LSIs where RF amplifier, DSP, audio DAC, post filter, and other circuits are integrated. This product uses this type CD LSI, UPD63712GC, which includes all functions necessary for CD player control. Basically, this system outputs the analog signal, and the digital output can be supported. A-F B UPD63712GC Digital signal processing EFM RF amplifier A/D converter 1 bit, Audio DAC Drive output C Servo PWM output Digital servo CD-TEXT Post filter (SCF) MPU interface Microcomputer for system control D Analog output Fig.1.0.1 Block diagram of CD LSI UPD63712GC E F 2 1 2 CX-3026/E 3 4 5 6 7 8 1.1 PREAMPLIFIER BLOCK (UPD63712GC: IC201) In the preamplifier block, the pickup output signals are processed to generate signals that are used for the next-stage blocks: the servo block, demodulator, and control. After I/V-converted by the preamplifier with built-in photo detectors (inside the pickup), the signals are applied to the preamplifier block in the CD LSI UPD63712GC (IC201). After added by the RF amplifier in this block, these signals are used to produce necessary signals such as RF, FE, TE, and TE zero-cross signals. The CD LSI employs a single power supply system of + 3.3V. Therefore, the REFO (1.65V) is used as the reference voltage both for this CD LSI and the pickup. The LSI produces the REFO signal by using the REFOUT via the buffer amplifier and outputs from the pin 90. All the measurements should be made based on this REFO. Caution: Be careful not to short the REFO and GRD when measuring. A B 1.1.1 APC (Automatic Power Control) A laser diode has extreme