MDS-MX101 - Sony Audio Service Manual (repair manual). Page 3

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Setting the Check Mode:
This mode is activated by inserting the AC power cord of the  PFJ-
1 power supply jig (or HCD-101) into AC wall outlet while pressing
the REC button and the CHARACTER button.  When this mode
started, the fluorescent indicator tube and LEDs are all turned on.

1-1-1. Button Check Mode (Key Check)

When the respective buttons (12 buttons are used in total)
are pressed while all tube and LEDs are turned on, the
display area which corresponds to the pressed button, is
turned off.  This mode ends by pressing the CD SYNC button
at last.

1-1-2. Fluorescent Indicator Tube Check Mode (Segment

Check)

When the button check mode ends, [Segment Check]
appears and the respective dots of the 12-digit, 5 x 7 segment
fluorescent tube are lit every other dot.  This mode ends by
pressing the CD SYNC button at last.

1-1-3. Fluorescent Indicator Tube Check Mode (Scroll Check)

When the segment check ends, [Scroll Check] appears.
When the SCROLL button is pressed, the displayed letter
scrolls to the left one letter after another.  When all letters
are scrolled, [end] appears.  Press YES button to return to
the normal operating mode.

The two types of extension cable are available during repair of this
set.  The extension cable (part code no. J-2501-086-A) is available
to connect CN103 of the BD board and CN200 of the DIGITAL
board.  The extension cable (part code no. J-2501-103-A) is available
to connect CN102 of the BD board and CN201 of the DIGITAL
board.

SERVICENG NOTE
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Supplying power during servicing

This equipment cannot operate without using a separate power supply. Connect the machine to the HCD-101. To apply power set the
SYSTEM POWER switch of HCD-101.
When other units are not available use the PFJ-1 power supply jig.
When using the PFJ-1, press the POWER switch of the conversion board to turn on the power.

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