TX-SR503/503E/8350 SERVICE PROCEDURE
1. Replacing the fuses
This symbol located near the fuse indicates that the fuse used is show operating type, For continued protection against fire hazard, replace with same type fuse, For fuse rating, refer to the marking adjacent to the symbol. Ce symbole indique que le fusible utilise est e lent. Pour une protection permanente, n'utiliser que des fusibles de meme type. Ce demier est indique la qu le present symbol est apposre. REF NO. F901 F901 or F901 F901 or F901 or F902 F902 or F902 or F902 F902 or F902 or F903 F903 or F903 F903 or F903 or F903 F903 or F903 or F6901 F6902 PART NAME FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE DESCRIPTION 8A-UL 8A-T/UL-ST2 4A-SE-EAK FUSE 4A-SE-TL250V 4A-SE-TL250V 4A-SE-EAK FUSE 4A-SE-TL250V 4A-SE-TL250V 4A-SE-EAK FUSE 4A-SE-TL250V 4A-SE-TL250V 5A-UL/T-237 5A-T/UL-ST2 2.5A-SE-EAK FUSE 2.5A-SE-TL250V 2.5A-SE-TL250V 2.5A-SE-EAK FUSE 2.5A-SE-TL250V 2.5A-SE-TL250V 10A-UL 10A-UL PART NO. 252198 252261 252077 252243 252277 252077 252243 252277 252077 252243 252277 252164 252258 252075 252241 252275 252075 252241 252275 252199 252199 REMARKS !, <503 DD, DC> !, <503 DD, DC> !, <503 WT> !, <503 WT> !, <503 WT> !, <503 GK, GQ, GR,PA, WT> !, <503 GK, GQ, GR,PA, WT> !, <503 GK, GQ, GR,PA, WT> !, <503E>, <8350> !, <503E>, <8350> !, <503E>, <8350> !, <503 DD< DC> !, <503 DD< DC> !, <503 GK, GQ, GR, PA, WT> !, <503 GK, GQ, GR, PA, WT> !, <503 GK, GQ, GR, PA, WT> !, <503E>, <8350> !, <503E>, <8350> !, <503E>, <8350> ! ! <GR> : Chinese model only <PA> : Australian model only <WT> : World wide model only
<Notes> <503> : TX-SR503 only <503E> : TX-SR503E (European model) only <8350> : TX-SR8350 (Chinese model) only
<DC> : Canadian model only <DD> : USA model only <GK> : Korean model only <GQ> : Hong kong model only
2. To initialize the unit
1. Press and the hold down the VIDEO 1/VCR button , then press the STANDBY/ON button when the unit is Power on. 2. After " Clea r " is displayed, the preset memory and each mode stored in the memory, are initialized and will return to the factory settings.
3. To check version of microprocessor
<Note> Main microprocessor Q701 only. 1. Press and the hold down the DISPLAY button , then press the STANDBY/ON button when the unit is Power on. Version is displayed on FL display only for 3 seconds. Ex.
V e r.1 .0 1/05305a
2. Press the STANDBY/ON button to Power off.
4. Memory Backup
The AV receiver uses a battery-less memory backup system in order to retain radio presets and other settings when it's unplugged or in the case of a power failure. Although no batteries are required, the AV receiver must be plugged into an AC outlet in order to charge the backup system. Once it has been charged, the AV receiver will retain the settings for several weeks, although this depends on the environment and will be shorter in humid climates.
