Kenwood RXD-790 Service Manual page 7

2. KEY MATRIX
KEY1 97 PIN B PACK
KEY2 96 PIN A PACK
KEY3 95 PIN POWER
KEY4 94 PIN EQ. OFF
KEY5 93 PIN DSW3
KEY6 92 PIN TEST (RDS)
¢ (CD)
KEY7 90 PIN
KEY8 89 PIN TIME DISP
7 (DECK)
KEY9 88 PIN
KEY10 87 PIN OTE (DECK)
KEY11 86 PIN DISC1
KEY12 85 PIN TUNING UP
KEY13 84 PIN SRS 3D
KEY14 83 PIN RESET
KEY15 82 PIN TUNING DOWN
3. TUNER preset frequency
Refer to RXD-500/700 service manual (B51-5300-00), if need TUNER preset frequency K1 and K2.
4. Destination list of tuner
Desti- DSW
nation 3(D23) 2(D22) 1(D21) 0(D20)
K1 0 0
K2 0 0
E1 0 0
DIODE SW : 0 = Without diode (When static, input low)
I = With diode (When static, input high)
5. Test mode
5-1 Test mode of the receiver
5-1-1 Setting of the test mode
While pressing the [INPUT] key or [Band] key, plug the
AC power cord in AC outlet.
5-1-2 Canceling of the test mode
Unplug the AC power cord.
5-1-3 Condition in test mode
POWER • • • • • • ON
SELECTOR • • • AUX (in case of [INPUT] key)
TUNER (in case of [BAND] key)
FL, LED • • • • • All the fluorescent display indicators
and LEDs light. (The all illuminated
state is cleared by pressing any main
unit key or remocon key.
EX. BASS • • • • • OFF
REC LEVEL • • • All position 0dB (REC 80)
5-1-4 Sub clock osculation diagnosis
Sub clock oscillation be diagnosed OK and NG before
input test mode.
ERR1 : OSC non active
ERR2 : Frequency NG.
CIRCUIT DESCRIPTION
KR0 KR1
41 42
B PLAY
A PLAY
A/B/BEATC
MANU/REF
DSW2
DSW6
DISC SKIP
4 (CD)
£ (DECK)
DUBBING
REV MODE
BAND
3 STEREO
EX.BASS/PRG
PRO LOGIC
Receiving frequency
Band
0 0 FM 87.5MHz~108.0MHz
AM 530kHz~1700kHz
0 1 FM 87.5MHz~108.0MHz
AM 530kHz~1610kHz
1 1 FM 87.5MHz~108.0MHz
AM 531kHz~1602kHz
RXD-790/V860/V890
No. of
KR2
43
STEREO
SD
INPUT
CLASSIC
DSW1
DSW5
6 (CD)
7 (CD)
¡ (DECK)
REC/ARM
DOLBY NR
AUTO
ENTER
DISPLAY
Channel
range space
100kHz
10kHz
100kHz
10kHz
50kHz
9kHz
5-1-5 All RAM clear
While pressing [3STEREO] key or [HIT MASTER] key,
plug the AC power cord into AC power output, the all
RAM cleared.
5-1-6 Basic operation in test mode.
(1) The muting during mode selection is not controlled in
the test mode.
(2) The REC out level is fixed to 0dB (MAX).
(3) The test mode is cancelled when the AC power is
turned OFF.
(4) The operation of the keys in the test mode, as follows.
5-1-7 The operation of the keys in the test mode.
(1) DISP/DEMO key
When this key is pressed in the test mode, all the flu-
orescent light off and normal display are indicated
cyclically.
(2) DISC 1~3 keys
With the selector on AUX, when the DISC 1~3 keys
are operated, the 3D level settings can be made as
follows.
1 DISC 1 • • • • • • 3D ON level -10 (Min)
2 DISC 2 • • • • • • 3D ON level
3 DISC 3 • • • • • • 3D ON level +10 (Max)
: Port No. of (X14)IC1 u-COM.
KR3
44
F REC
R REC
POP
ROCK
DSW0
DSW4
OPEN/CLOSW
DISC3
™ (DECK)
1 (DECK)
DISC2
BEST/ECHO/A
MODE/OTT
STEREO/BEST
PORT
IF RF
47
+10.7MHz 25kHz 0
+450kHz 10kHz 0
+10.7MHz 25kHz 1
+450kHz 10kHz 0
+10.7MHz 25kHz 0
+450kHz 9kHz 0
0 (Center)
7