11 MAINTENANCE
■Disassembly
For internal maintenance and optional installations, disassemble the receiver.
CAUTION: DISCONNECT the DC power cable or AC adapter before performing any work on the receiver.
➀Remove 6 screws from the top of the receiver and 4 screws from its sides.
➁Carefully lift up the top cover while disconnecting the plug from the speaker cable.
➂Turn the receiver upside down.
➃Remove 6 screws from the bottom cover, then lift up the bottom cover.
Speaker cable
■Fuse replacement
If a fuse blows or the receiver stops functioning, try to find the source of the problem, and replace the dam- aged fuse with a new, rated fuse.
• For DC cable fuse | • For internal fuse | |
| Fuse | MAIN unit |
| (FGMB 125 V 3 A) |
■Level adjustments
R254 |
R252 |
R252 adjusts the beep level |
R254 adjusts the |
■Memory backup
All of the CPU’s memory is backed up by an EEP- ROM
■CPU resetting
If the
While pushing [MW], push [POWER] in to turn on the receiver power.
• The CPU is reset.
NOTE: Resetting the CPU clears all memory con- tents and returns internal settings to their factory defaults.
■Cleaning
If the receiver becomes dusty or dirty, wipe it clean with a dry, soft cloth.
AVOID the use of strong chemical solvents such as |
thinner, benzine or alcohol to clean the |
receiver. These may damage the receiver’s |
surfaces. |
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