Circuit Description - Kenwood RD-HD5MD Service Manual

1. Initializing
1-1 Initializing Method
• While holding down the [SET] key, plugged in the
power cord to AC power wall outlet.
1-2 Initializing Operation
• During the initial operation, the display shows "INITIAL-
IZE "and after that it will be returned to standby condition.
2-2 Cancel of the test mode
• Initialized and cancel the test mode if pulling out the power cord.
2-3 Operation of the Test Mode
Key
CD-PLAY/PAUSE
(cyclically change the mode
05 and 03 by pressing the key.
MENU
P.CALL UP
P.CALL DOWN
SET
3. MD Test Mode for Adjustment
3-1 Contents of the Test Mode
3-2 Entering the Test Mode
• Turn the AC on while pressing the MD[REC] key.
3-3 Canceling the Test Mode
• Turn the AC off.
3-4 Key Operations for Adjustment
KEYS
Volume/multi-control Select the mode or changed
the adjustment value.
Fix the mode or adjustment value.
MD PLAY/PAUSE
Skip to next step.
Cancel the selected mode and
changed to menu page.
STOP
Return to the state previous before.
3-5 Selection of Adjustment Test Mode
• Whenever the [volume/multi-control] knob is turned the
adjustment test mode is selected.
No. LCD
The work of adjustment is unnecessary
1 TEMP ADJU
in this mode.
2 LDPWR ADJU Laser power adjustment.
3 LDPWR CHEC Laser power check.
EF balance adjustment
4 EFBAL ADJU
(Traverse adjustment).
5 TE B. ADJ Automatic EF balance adjustment.
6 FBIAS ADJU Focus bias adjustment.
7 CREC-PLAY Continuous recording mode.
Continuous playback mode.
For more information on each adjustment mode, refer to
each section of 4, "Electrical adjustment".

CIRCUIT DESCRIPTION

CD Test Mode
Tracking-Servo ON/OFF
CD double speed CD normal speed
• CD Track number up
•The pickup travels outward in the stop mode.
• CD Track number down
• The pickup travels inward in the stop mode.
-
OPERATION
DESCRIPTION SECTION
4-5
4-6
4-6
4-7
4-8
4-9
3-7
3-6
RD-HD5MD/HD7
2. Test Mode
2-1 Setting method of the Test Mode
Test Mode Keys
CD Test Mode CD PLAY PAUSE Insert the AC cord to
MD Test Mode MD PLAY PAUSE AC wall outlet while
MD Mecha. Test MD REC
Mode
Operation
MD Track number up
MD Track number down
Stop the MD operation, and start the ALL-
ERASE operation if the disc is recordable.
3-6 Continuous Playback Mode
(1) Setting of Continuous Playback Mode
No. Key
1
VOLUME Select CREC-PLAY
2
Load a recordable disc.
3 6
(MD) CREC (ZZZZ) (CREC address)
0300h cluster = recording start point
ó
CPLAY ?
4 6
(MD) CPLAY MID
C = XXXX
C1 error
address MID = 0300h cluster
5
STOP CREC-PLAY
3-7 Continuous Recording Mode
(1) Setting of Continuous Recording Mode
No. Key
1
VOLUME Select
2
Load a recordable disc.
3
6
(MD) CREC (ZZZZ) (CREC address)
0300h cluster = recording start point
ó
CPLAY ?
4
STOP CREC-PLAY
4. Electrical adjustment
4-1 Precaution during confirmation of Laser Diode
emission
During adjustment, do not view the emission of a laser
diode from just above for confirmation. This may dam-
age your eyes.
Setting Method
holding down
the left key.
MD Test Mode
-
-
Display/Function
a = YY (error)
ADIP error
Display/Function
CREC-PLAY
5