Kenwood KRF-V7771D Service Manual page 8

KRF-V7771D/V7771DE
Push key I N P U T SELECTOR
TUNER
CD1
MD/TAPE1
VIDEO1
FL
VIDEO2
DISPLAY
VIDEO3
VIDEO4
AV AUX
PHONO
SL16/XS8 SW (rear panel): SL16
4. Main microprocessor uPD78078GF-086 (X08 : IC3)
4-1 Microprocessor periphery block diagram
(X25) IC53
V-SEL CONT.
FAN-M
NJU3713D
SEL_DATA, SEL_CLK,
VIDEO_STB
(X11) IC1,2,4,42
(X25) IC23
SEL IC1/2
TC9162~9164
SEL_DATA, SEL_CLK,
SEL_STB1, SEL_STB2
(X11) IC21,23,25
VOLUME IC
TC9412/9413AP
VOL_DATA, VOL_CLK,
VOL_CE1
(X11) IC44
TONE IC
TC9184AP
VOL_DATA, VOL_CLK,
VOL_CE2
(X25) A1
REMOCON
REMOCON_IN1 (FRONT PANEL)
8
CIRCUIT DESCRIPTION
S P A
P. CALL
STEREO
UP
STEREO
STEREO
PRO LOGIC
3 STEREO
PRO LOGIC+Re-EQ
DSP
STEREO
STEREO
STANDBY LED (light off), XS8
(X25) IC 90
PERFECT MACRO MUTE
POWER DETECT
TU_PDET, U_PDET, MUTE_A, MUTE_B,
SW_MUTE, -20dB_ATT,
USEL_CTLA, USEL_CTLB
USEL_TR VIDEO_MUTE, SCH_MUTE
(X08) IC3
uPD78078GF-086
(X08)
(X11)
IC1
IC602
TUNER/RDS
TUNER PLL IC
TDA7479D
LC72131
RDS_DAT, RDS_CLK,
PLL_CLK, PLL_DATA,
RDS_SLEVEL, T_MUTE,
PLL_CE, PLL_DO
SD, STEREO
S P B MUTE
ATT
P. CALL
OFF ON
DOWN
STANDBY LED (light on)
(X08) IC4
REMOCON COMMUNICATION IC
SMK_REQ, SMK_ENB, SMK_RWR, SMK_D0,
SMK_D1, SMK_D2, SMK_D3, SMK_D4, SMK_D5,
SMK_D6, SMK_D7
MAIN u-COM
MEGA CHANGER
(CD-0000M)
UART_RXD, UART_TXD,
DISPLAY MODE
AUTO/STEREO MANUAL/MONO
FM
(DOLBY DIGITAL LED : OFF
TONE (TUNED)
+10 (light on) OFF (light off)
ARENA JAZZ CLUB
THEATER
TAPE2
OFF ON
INPUT LEVEL
0dB -3dB
(X11) S1
ENCODER
ENC_VOL1, ENC_VOL2
ON)
-6dB
DESTINATION
999_888, 8_16, TSW_B,
TSW_1, TSW_2,
TSW_3 (CH, SP)
(X07) K1~6
(X25) K1
RELAY
RELAY_A, RELAY_B,
RELAY_CS, RELAY_TR,
RELAY_POWER, EXT_OUT
RELAY_MULTI
SERIAL
SDATA, SBUSY
(X25) IC61
FL DRIVER
uPD780204
FL_DOUT, FL_DIN,
FL_CLK, FL_STB,
DPU_RST
(X08) IC5
SUB u-COM
uPD78056GC
SUB_RESET, SDT, MOT,
MCK, MREQ, SREQ