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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