System Check; Main Section - Clarion DXZ955MC Service Manual

9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged by
electrostatic charge caused by your clothes and body. Make
sure to avoid electrostatic charges on your clothes or body,
or discharge static electricity before handling the optical
pickup.
9-1. Laser diode
The laser diode terminals are shorted for transporta-
tion in order to prevent electrostatic damage. After
replacement, open the shorted circuit. When remov-
ing the pickup from the mechanism, short the termi-

SYSTEM CHECK

The function allows you to perform a system check when
an external equipment is connected to this unit or the"S-
PEAKER SELECT" is changed.
1. Press the [ADJ] button to set to the adjust mode.
2. Touch [SETTING].
3. Touch on the left of the display to select "SYS-
TEM CHECK".
4. Touch [START]. The confirmation display appears.
5. Touch [OK].
When the system check is complete, "SPEAKER SELECT"
screen appears.Select the apeaker system. After this ope-
ration, the diaplay returns to the original mode.
ADJUSTMENT

Main section

Item Procedure
File PRN (PE2747YADP0001) is write in EEP-ROM IC(IC602).
PRN file
At this moment you must confirm that "OK"display when writing or reading.
read-in
When "CS ERROR" is displayed, it writes it in eeprom again and "OK" display.
BUS Tuner 1. FM IF adjust
adjustment Input 98.1MHz/60dBu and measure with CW, the adjustment value is written in EEP-ROM IC.
(adjustable tolerance +3/-3 KHz)
2. FM S-meter adjust
Input 98.1MHz/65dBu/35dBu and measure with modulation (1KHz/30%), the calculated offset
value and inclination are written in EEP-ROM IC. (adjustable tolerance +3/-3 KHz)
3. AM IF adjust
Input 1000kHz/60dBu and measure with CW, the adjustment value is written in EEP-ROM IC.
(adjustable tolerance +1/-1 KHz)
4. AM S-meter adjust
Input 1000kHz/70dBu/40dBu and measure with modulation (1KHz/30%), the calculated offset
value and inclination are written in EEP-ROM IC. (adjustable tolerance +3/-3 KHz)
nals by soldering them to prevent this damage.
9-2. Actuator
The actuator has a powerful magnetic circuit. If a
magnetic material is put close to it. Its characteris-
tics will change. Ensure that no foreign substances
enter through the ventilation slots in the cover.
9-3. Cleaning the lens
Dust on the optical lens affects performance. To
clean the lens, apply a small amount of isopropyl
alcohol to lens paper and wipe the lens gently.
CODEMATIC
This function prevents persons who do not know the touch
sequence from easily operating this unit. The Touch Code
display appears when DCP is attached and the power is
turned ON with "CODEMATIC" set to "ON".
CODEMATIC
If you touch the display in this screen in the preset order,
"SUCCESSFUL" is displayed and the power is turned OFF.
When the power is next turned ON, the Touch Code display
does not appear, and the main display in the radio mode or
CD mode is displayed.
- 3 -
ADJ SETTING
OFF
RT N
Measuring
instrument
SG
CeNET analyzer
Personal computer
Exclusive software
PRN file
(PE2747YADP0001
or PRN File
used with QC6822B)
DXZ955MC
DXZ956MC