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 2003 K-ZZB. MAY 2003 Printed in Japan...
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. GM-D505/XH/EW...
• Specifications and the design are subject to possible modification without notice due to improvements. *Average current drawn • The average current drawn is nearly the maximum current drawn by this unit when an audio signal is input. Use this value when working out total current drawn by multiple power amplifiers. GM-D505/XH/EW...
- For the applying amount of lubricants or glue, follow the instructions in this manual. ( In the case of no amount instructions, apply as you think it appropriate.) - PACKING SECTION PARTS LIST Part No. GM-D505/XH/EW GM-D505/XH/ES Mark No. Description GM-D505/XR/EW...
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST". NETWORK PCB(1/2) A HPF SWITCH B Freq 20K(E) B HPF SWITCH B Freq Sub Freq Sub Freq NETWORK PCB(2/2) Large size SCH diagram BFC SWITCH Guide page Detailed page GM-D505/XH/EW...
R022 The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. NETWORK UNIT Consists of NETWORK PCB CONNECTOR CONNECTOR PCB GM-D505/XH/EW...
1 Power supply switching waveform measured at TP638 and TP639. 2 BRem TP624, Stand-by line TP253, Mute line TP254 timing diagram. 3 Class D switching audio waveform at no signal {TP413 and / or TP414} same waveform on both test points. GM-D505/XH/EW...
1.The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic dia- gram. 2.Viewpoint of PCB diagrams Capacitor Connector SIDE A SIDE B P.C.Board Chip Part CN102 GM-D505/XH/EW...
RS1/16S103J CKSRYB471K50 RS1/16S222J CKSRYB471K50 CEAT100M50 RS1/16S222J CEAT100M50 CAPACITORS CKSRYB472K50 CKSRYB472K50 CFTNA184J50 CCSRCH470J50 CFTNA184J50 CCSRCH470J50 CFTNA224J50 CCSRCH470J50 CFTNA224J50 CCSRCH470J50 CCSRCH470J50 220µF/10V HCH0012 CCSRCH470J50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKCYB472K50 6. ADJUSTMENT There is no information to be shown in this chapter. GM-D505/XH/EW...
Remove the five screws. Remove the four screws. Remove the three screws. Remove the three Fuses and then remove the Case. Fuse Fig.1 Removing the Amp Unit (Fig.2) Remove the five screws and then remove the Amp Unit. Amp Unit Fig.2 GM-D505/XH/EW...
7.1.2 CONNECTOR FUNCTION DESCRIPTION GM-D505/XH/EW...
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SNR2 62 22 GNLS GNRS 63 21 GNL GNR 64 TDA7294V IC's marked by * are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. MUTE THERMAL STBY SHUTDOWN PROTECTION GM-D505/XH/EW...
IC401 (TDA7570) is class D Chip with internal Analog to Digital Converter. (See an IC information block) IC401 (TDA7570) digitizes the analog waveform and uses PWM at 310kHz Rail to Rail Square wave to generate an audio signal that is then recovered by the 4th order LC filter. GM-D505/XH/EW...