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CDR Mini System FW-R7/17/21/22 SERVICING For servicing FW-R7, the set can be divided into two parts: 1. Except for the CD-R/W module the set has to be repaired on component level. 2. The CD-R/W module will be exchanged completely in case of a failure. The defective CD-R/W module has to be returned for central repair. Available circuit descriptions: The Basics of Compact Disc Recordable/Rewritable 4822 725 25242 3rd generation Compact Disc Recording 3104 125 40100 Table of Contents Location of printed circuit boards . . . . . . . . . . . . . . . . . . . 1-2 Power Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Measurement setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 3 Disc Changer Module . . . . . . . . . . . . . . . . . . . . . . . . . . 10 RC-5 codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Brief operating instructions . . . . . . . . . . . . . . . . . . . . . . . . 2-4 CD R/W Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Warnings & safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Service Testprogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Exploded view of set. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Partslist of set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Block/Leveldiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Front Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Tuner Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Audio Frequency Board (AF7) . . . . . . . . . . . . . . . . . . . . . 8 CLASS 1 LASER PRODUCT