Test Mode - Sony HCD-M100 Service Manual

[MC Cold Reset]
* The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press the three buttons x , ENTER and @/1 at the same
time.
2. The fluorescent indicator tube turns off for a moment and the
RAM is reset to the initial conditions.
[MC Hot Reset]
* This mode resets the set with the preset data kept stored in the
memory. This hot reset mode is performed also when the power
cord is plugged in and out.
Procedure:
1. Press the three buttons x , ENTER and FUNCTION at the
same time.
2. The fluorescent indicator tube turns off for a moment and the
RAM is reset to the initial conditions.
[CD Initial]
* The CD INITIAL clears all of the CD related data. Execute
this mode when returning the set to the customer.
Procedure:
1. Press the three buttons x , ENTER and CONTINUE/
STEREO/MONO at the same time.
2. The message "STANDBY" appears on the fluorescent indicator
tube and the CD related data is reset to the initial conditions.
[CD Line Test]
* The CD Line test displays the rotating time required for one
rotation by rotating the disc tray.
Procedure:
1. Press the three buttons x , ENTER and CLOCK/TIMER SET
at the same time. The CD PLAY LED and the CD PAUSE LED
flash alternately and the disc tray starts rotation.
2. The message "xx << y.y" appears on the fluorescent indicator
tube. The left numbers count up the discs starting from 1 to 51.
The left numbers "y.y" indicate the rotating time required for
one rotation by rotating the disc tray.
3. To exit the CD LINE test mode, execute the MC Hot Reset.
[CD Memo All Clear]
* The mode clears all contents of the CD disc memo. Execute
this mode when returning the set to the customer.
Procedure:
1. Press the two buttons MEMO INPUT and ENTER at the
same time.
2. The message "ALL ERASE" appears on the fluorescent indicator
tube and the CD disc memo is all cleared.
[GC Test Mode]
* This mode checks microprocessor version number, keys,
fluorescent tubes, LEDs and VACS (Variable Attenuation
Control System).
16
SECTION 3

TEST MODE

Procedure:
1. Press the three buttons x , ENTER and DISPLAY at the
same time. The set enters the GC test mode, and all of the
fluorescent tubes and LEDs turn on.
2. From this state, any one of the three modes MODEL NAME,
KEY CHECK and VACS can be selected. Go to step 3 to enter
the MODEL NAME test mode. Go to step 5 to enter the KEY
CHECK test mode. Go to step 11 to enter the VACS test mode.
3. [MODEL NAME test mode ] From the state of step 2, press the
CONTINUE/STEREO/MONO button. Every pressing of the
CONTINUE/STEREO/MONO button advances the following
check modes and displays in the given order. Model name
display, destination display, MC version display, GC version
display, DC version display, VC version display and CC version
display.
4. To exit the GC test mode and to return to the STANDBY mode,
press the x , ENTER and DISPLAY buttons again.
5. [KEY CHECK test mode ] You can enter this mode directly
from step 2. When you performed steps 3, perform steps 4,
then 1 and 2 before starting the step 5.
[KEY CHECK test mode ] From the GC test mode, press the
PROGRAM button to enter the key check mode.
The display: K 1, J 0, V 0 appears.
6. The value after K indicates the number of times that the key is
pressed. 1 is displayed because the PROGRAM button has
already been pressed.
7. When other keys are pressed one after another, the key count
increases up to 43. The keys which have already been pressed,
are not counted.
8. The value after J indicates the number of clicks that the JOG
dial is rotated. The clockwise rotation increases the count value.
The counter-clockwise rotation decreases the count value.
9. The value after V also indicates amount of rotation of volume
control. The clockwise rotation increases the count value. The
counter-clockwise rotation decreases the count value.
10. To exit the GC test mode and to return to the STANDBY mode,
press the x , ENTER and DISPLAY buttons again.
11. [VACS test mode ] You can enter this mode directly from step
2. When you performed steps 3, perform steps 4, then 1 and 2
before starting the step 5.
[VACS test mode ] From the GC test mode, press the SHUFFLE
button to enter the VACS attenuation check mode. The display:
VOL NORMAL appears.
12. To exit the GC test mode and to return to the STANDBY mode,
press the x , ENTER and DISPLAY buttons again.
[Aging Mode]
The decks A and B are operated automatically for aging purpose.
When errors occur during aging, causes of errors are displayed and
the aging mode is stopped.
How to enter the aging mode
1. Turn on the main power. Install a playback tape to deck A and
install a blank tape to deck B.
2. Select TAPE A with the FUNCTION button.
3. Press the three buttons of x , ENTER and SHUFFLE at the
same time to enter the aging mode.
How to exit the aging mode.
Turn off the main power.
1. Rewind the tapes A and B. Tapes stop at the shut-off of tape A
and the aging mode advances to the next step.
The message: TAPE A AG-1 appears.
2. The tape A is played back in the FWD mode. After two minutes
of the FWD playback, the aging mode advances to the next
step.
The message: TAPE A AG-2 appears.