SAFETY INFORMATION - GM-X972/XR/UC CAUTION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.
*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-X972/XR/UC...
No differentiation is made between chip capacitors and 0.022 R022 discrete capacitors. 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. GM-X972/XR/UC...
1.The parts mounted on this PCB include all necessary parts for several destination. SIDE A AMP UNIT For further information for respective destinations, be sure to check with the schematic dia- SIDE B gram. P.C.Board Chip Part SPEAKER INPUT INPUT GAIN LPF SELECT GM-X972/XR/UC...
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SIDE A FU603 FU602 POWER SUPPLY SPEAKER OUTPUT GM-X972/XR/UC...
CFTNA473J50 CQMA102J50 2200µF/50V HCH0007 2200µF/50V HCH0007 2200µF/50V HCH0007 2200µF/50V HCH0007 CQMA103J50 CCSRCH471J50 CCSRCH471J50 CEAT100M16 CEAT100M16 CQMA472J50 CQMA472J50 CCSRCH470J50 CCSRCH470J50 CCSRCH470J50 CCSRCH470J50 CFTNA104J50 CFTNA104J50 CEAT100M16 CEAT100M16 220µF/10V HCH0012 6. ADJUSTMENT There is no information to be shown in this chapter. GM-X972/XR/UC...
Remove the eight screws. Remove the screw and then remove the two Panels. Remove the eight screws and then remove the two Heat Sinks. Remove the five screws and then remove the Amp Unit. Heat Sink Amp Unit Heat Sink Panel Fig.1 GM-X972/XR/UC...
7.1.2 CONNECTOR FUNCTION DESCRIPTION - GM-X972/XR/UC 6.5V 0.2V BRIDGED BRIDGEABLE 2-CH POWER AMPLIFIER GM-X972/XR/UC...
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7.2 IC *TDA7293V MUTE THERMAL STBY SHUTDOWN PROTECTION IC's marked by * are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. GM-X972/XR/UC...
If the car stereo does not have a system remote control ter- minal, connect the male terminal to the power terminal through the ignition switch. GM-X972/XR/UC...