Circuit Description - Kenwood RXD-951 Service Manual

RXD-951/A700/A900/V616/V818/V919
1. Initialization
1-1 Setting of initial conditions
While pressing the [ENTER] key, plug the AC cord into
the AC power outlet.
1-2 Initializing operation
• A microcomputer is initialized for start when the AC
power is turned on while pressing the [ENTER] key. At
that time, CD mechanism and
nism are also initialized.
• During the initial operation, the display shows "INITIAL-
IZE" and after that the clock blinks up on display.
1-3 The backup data and initial items.
POWER
VOLUME
BALANCE
MUTING
EQ
EQ. MANU
AMP EX. BASS
S. W. *
SRS 3D
3D LEVEL
INPUT SEL
DISPLAY MODE
DEMO
DOLBY PRO LOGIC * OFF
DOLBY 3 STEREO *
CENTER MODE *
DELAY TIME *
CENTER LEVEL *
SURROUND LEVEL *
BAND
LAST f
TUNER LAST Pch
AUTO/MONO
Pch
CLOCK
PROG ON
CLOCK PROG OFF
TIMER PRO MODE
SOURCE
Pch
EXE
OTT
SLEEP
DIRECTION
RVS MODE
DECK DOLBY NR
A/B
ACTIVE MODE
6

CIRCUIT DESCRIPTION

CASSETTE
mecha-
ITEMS
OFF
45
CENTER
OFF
OFF (ROCK)
FLAT
ON
LEVEL3
OFF
LEVEL +5
TUNER
DISPLAY AUTO
OFF
OFF
NORMAL
20 msec
0 (-10dB)
0 (-10dB)
FM
LOWEST FREQUENCY
— —
AUTO
TEST f
AM 12 : 00 ***
AM 12 : 00
AM 12 : 00
TIMER PLAY
TUNER
1
OFF
OFF
OFF
FORWARD
p
OFF
B
STOP
PLAY MODE
AUTO/NTSC/PAL
AUTO PBC
DIGEST
CD/VCD MEMORY STOP
REPEAT
RANDOM
ACTIVE MODE
TIME
None backup data
* Except RXD-V616
** Except RXD-V616/V818
*** Display [ – – : – – ]
1-4 Mechanism initialization
1-4-1 CD mechanism
• Disc unclamps (traverse down)
• Rotary tray rotates (1/3 rotation)
• If a mechanism error occurs, "CD" is indicated on the
display.
1-4-2 DECK mechanism
• When initial condition becomes NG for the third time,
decide the error.
The error condition is displayed as "X" on the display.
1-4-3 Error display
CD X ERR
2. Test mode of the receiver
Refer to the 3. test mode on page 7, 8 of the Service
manual RXD-501/etc. (B51-5420-00).
It makes description of addition RXD-V919 only.
(The operation of the keys)
Push Key
Setting
SKIP UP (¢) -10 (Min) î 0 î +10 (Max)
SKIP DOWN (4) -10 (Min) í 0 í +10 (Max)
Setting SURROUND LEVEL
FF (¡) -10 (Min) î 0 î +10 (Max)
RWD (1) -10 (Min) í 0 í +10 (Max)
CD PGM DOLBY PRO LOGIC ON
DUBBING DOLBY 3 STEREO ON
TIMER STEREO ON
• Input selector : Except TUNER
• Surround mode : DOLBY mode (PRO LOGIC, 3ST)
ITEMS
TRACK
AUTO
ON
OFF
OFF
OFF
OFF
STOP
SINGLE
Active description
CENTER LEVEL