Sony CDP-M7 Service Manual page 5

Power Supply During Servicing
This unit is not able to operate on its own because it does not have its own power supply. During servicing, connect to other units.
Power is supplied when the SYSTEM POWER button of the amplifier (TA-M7) is turned ON.
If the other units are not available, use a service box (PFJ-1) and jig (J-2501-078-A).
In this case, press the p button and TIME button and §OPEN/CLOSE button simultaneously to turn on the power.
[Connection Diagram]
SERVICE BOX (PFJ-1)
POWER SW
FH-E939,838,937
CDP/TC
Fluorescent Indicator Tube/Key Check Mode
After turning on the power, press the p button, TIME button, and DISC 1 button simultaneously to perform the Fluorescent indicator tube
check.
The steps of the Fluorescent Indicator Tube check mode will proceed onto the next one by the above multiple pressing.
During the Fluorescent Indicator Tube check mode, press any button or rotate the selector knob to set the key check mode.
To end the mode, press the above three buttons simultaneously.
Fluorescent Indicator Tube all lit mode
µ
Multiple pressing
Segment pattern 1 mode
Multiple pressing
µ
Segment pattern 2 mode
Multiple pressing
µ
End of test mode
When the three buttons pressed to enter the Fluorescent Indicator Tube all lit mode are released together, the Fluorescent Indicator
Note 1)
Tube all lit mode will remain on. When released separately, the key check mode will be set soon after the Fluorescent Indicator Tube
all lit mode.
In ''multiple pressing", if the three buttons are pressed and released together, the next mode will be set. If not, the key check mode will
be set.
In the key check mode, each time the button is pressed, the "KEY=" number on the Fluorescent indicator tube increases. When the
Note 2)
SELECTOR knob is rotated, the "KEY=" number on the Fluorescent indicator tube increases in the + direction and decreases in the
– direction.
JIG
(J-2501-078-A)
CN904
17P
CORD WITH CONNECTOR 17P
(Provided with PFJ-1)
Press any key or rotate the SELECTOR knob
Key check mode
CN902 CN101 7P
7P SYSTEM CONTROL
CORD WITH CONNECTOR 7P
(Provided with unit)
Multiple pressing
— 5 —
UNIT (CDP-M7)