102
DEH-P945R,DEX-P99R
1)Precautions
• This unit uses a single power supply (+5V) for the reg-
ulator. The signal reference potential, therefore, is
connected to REFO(approx. 2.5V) instead of GND.
If REFO and GND are connected to each other by mis-
take during adjustments, not only will it be impossi-
ble to measure the potential correctly, but the servo
will malfunction and a severe shock will be applied to
the pick-up. To avoid this, take special note of the fol-
lowing.
Do not connect the negative probe of the measuring
equipment to REFO and GND together. It is especially
important not to connect the channel 1 negative
probe of the oscilloscope to REFO with the channel 2
negative probe connected to GND.
Since the frame of the measuring instrument is usual-
ly at the same potential as the negative probe, change
the frame of the measuring instrument to floating sta-
tus.
If by accident REFO comes in contact with GND,
immediately switch the regulator or power OFF.
• Always make sure the regulator is OFF when connect-
ing and disconnecting the various filters and wiring
required for measurements.
• Before proceeding to further adjustments and mea-
surements after switching regulator ON, let the player
run for about one minute to allow the circuits to stabi-
lize.
• Since the protective systems in the unit's software are
rendered inoperative in test mode, be very careful to
avoid mechanical and /or electrical shocks to the sys-
tem when making adjustment.
• Test mode starting procedure
Switch ACC, back-up ON while pressing the TA and
TR– keys together.
• Test mode cancellation
Switch ACC, back-up OFF.
• Disc detection during loading and eject operations is
performed by means of a photo transistor in this
unit.Consequently, if the inside of the unit is exposed
to a strong light source when the outer casing is
removed for repairs or adjustment, the following mal-
functions may occur.
*During PLAY, even if the eject button is pressed,the
disc will not be ejected and the unit will remain in
the PLAY mode.
*The unit will not load a disc.
When the unit malfunctions this way, either re-posi-
tion the light source, move the unit or cover the
photo transistor.
• When loading and unloading discs during adjustment
procedures, always wait for the disc to be properly
clamped or ejected before pressing another key.
Otherwise, there is a risk of the actuator being
destroyed.
• Turn power off when pressing the button TR+ or the
button TR- key for focus search in the test mode. (Or
else lens may stick and the actuator may be dam-
aged.)
• SINGLE/4TRK/10TRK/32TRK will continue to operate
even after the key is released.Tracking is closed the
moment C-MOVE is released.
• JUMP MODE resets to SINGLE as soon as power is
switched OFF.
7.2.2 TEST MODE
-
CD Test Mode
Содержание DEH-P945R
Страница 13: ...13 DEH P945R DEX P99R ...
Страница 14: ...14 DEH P945R DEX P99R 2 4 CD MECHANISM MODULE ...
Страница 19: ...19 DEH P945R DEX P99R 5 6 7 8 5 6 7 D C B A 8 A a A b A a B C K FLAP SENSE PCB KEYBOARD UNIT B K ...
Страница 23: ...23 DEH P945R DEX P99R 5 6 7 8 5 6 7 8 D C B A D D b A A ...
Страница 24: ...24 DEH P945R DEX P99R 1 2 3 4 2 3 4 D C B A 1 D a D a D b E D ...
Страница 25: ...25 DEH P945R DEX P99R 5 6 7 8 5 6 7 D C B A 8 D a D a D b I J N O I J ...
Страница 26: ...26 DEH P945R DEX P99R 1 2 3 4 2 3 4 D C B A 1 D a D b D b A ...
Страница 27: ...27 DEH P945R DEX P99R 5 6 7 8 5 6 7 D C B A 8 D a D b D b A ...
Страница 31: ...31 DEH P945R DEX P99R ...
Страница 32: ...32 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A B A B 3 3 FM AM TUNER UNIT ...
Страница 33: ...33 DEH P945R DEX P99R 5 6 7 8 5 6 7 8 D C B A B ...
Страница 38: ...38 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A F a F a F b A CN222 M CD 4 5dBs FM100 2 55dBs AM30 7 45dBs ...
Страница 39: ...39 DEH P945R DEX P99R 5 6 7 8 5 6 7 8 D C B A F a F a F b ...
Страница 41: ...41 DEH P945R DEX P99R 5 6 7 8 5 6 7 8 D C B A F b F a F b GGC1325 AM30 10 45dBs ...
Страница 42: ...42 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 3 6 ASL UNIT L L A ...
Страница 43: ...43 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 3 7 MICROPHONE JACK UNIT M M A MICROPHONE JACK UNIT ...
Страница 45: ...45 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 3 9 D D CONVERTER UNIT DEX P99R EW G G E D D CONVERTER UNIT ...
Страница 48: ...48 DEH P945R DEX P99R 1 2 3 4 2 3 4 D C B A 1 A TUNER AMP UNIT A ...
Страница 49: ...49 DEH P945R DEX P99R 5 6 7 8 5 6 7 D C B A 8 A SIDE B ...
Страница 50: ...50 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A A B FM AM TUNER UNIT B 4 2 FM AM TUNER UNIT SIDE A ...
Страница 51: ...51 DEH P945R DEX P99R D C B A 1 2 3 4 1 2 3 4 B FM AM TUNER UNIT B SIDE B ...
Страница 52: ...52 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 4 3 CD MECHANISM MODULE SIDE A D CONTROL UNIT D ...
Страница 55: ...55 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A J PHOTO FPC UNIT I J 1 2 3 P1 P3 P2 ...
Страница 56: ...DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 4 4 KEYBOARD UNIT KEYBOARD UNIT C KEYBOARD UNIT C 56 C A CN801 ...
Страница 57: ...57 DEH P945R DEX P99R 5 6 7 8 5 6 7 8 D C B A C SIDE A SIDE B ...
Страница 58: ...58 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 4 5 DSP UNIT SIDE A DSP UNIT F F ...
Страница 59: ...59 DEH P945R DEX P99R D C B A 1 2 3 4 1 2 3 4 SIDE B F DSP UNIT F A CN222 ...
Страница 60: ...60 DEH P945R DEX P99R 1 2 3 4 1 2 3 4 D C B A 4 6 ASL UNIT ASL UNIT L SIDE A SIDE B ASL UNIT L L A CN141 ...
Страница 82: ...82 DEH P945R DEX P99R Grating waveform Ech Xch 20mV div AC Fch Ych 20mV div AC 45 0 75 60 30 90 ...
Страница 98: ...98 DEH P945R DEX P99R TC7S08FU 1 IN B 2 IN A 3 GND 4 OUT Y 5 VCC AK4321VF ...
Страница 100: ...COMMON SEGMENT 7 1 2 DISPLAY CAW1471 DEH P945R EW CAW1493 DEX P99R EW 100 DEH P945R DEX P99R ...
Страница 107: ...107 DEH P945R DEX P99R ...