Kenwood KRF-V7771D Service Manual page 11

KRF-V7771D/V8881D/VR-2080/2090
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3 7 63 1515 0
Pin No. Pin Name
45 SREQ
46 FL_DOUT
47 FL_DIN
48 FL_CLK
49 FL_STB
50 VSEL_CTLA
51 VSEL_CTLB
52 FAN_1
53 FAN_2
54 FAN_3
55 SDATA
56 SBUSY
57 RELAY_A
58 RELAY_B
59 RELAY_CS
60 RELAY_TR
61 RELAY_POWER
62 EXT_OUT
63 NC
64 DRV_RST
65 TV_PDET
66 999_888
TE
L 13942296513
67 8_16
68, 69 ENC_VOL2, 1
70 PROTECTION1
71 Vss
72 PROTECTION2
73 NC
74~76 TSW_0~2
77 TSW_3 (CH. SP)
78 NC
79 RELAY_MULTI
80, 81 DIN_1, 2
82 DIN_STB
83 SMK_REQ
84 SMK_ENB
85 SMK_RWR
86~93 SMK_D0~D7
94 MUTE_A
95 MUTE_B
96 SW_MUTE
97 -20dB_ATT
98 VIDEO_MUTE
99 SCH_MUTE
100 TONE_STB
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CIRCUIT DESCRIPTION
I/O Connect
I PD uCOM-uCOM COMMUNICATION SLAVE REQUEST
(uPD78058GC-A74)
I PD FL DRIVER DATA IN
O PD FL DRIVER DATA OUT
O PD FL DRIVER CLOCK
O PD FL DRIVER STROBE
O PD PERFECT MACRO VIDEO SELECTOR CONTROL A
O PD PERFECT MACRO VIDEO SELECTOR CONTROL B
I PD FAN DETECT 1
I PD FAN DETECT 2
I PD FAN DETECT 3
I/O – SERIAL DATA
I/O – SERIAL BUSY
O PD SPEAKER A RELAY
O PD SPEAKER B RELAY
O PD CENTER/SURROUND SPEAKER RELAY
O PD TRANS RELAY
O PD POWER RELAY
O PD EXTERNAL OUT
O PD NO USED
O PD FL DRIVER RESET
I PD PERFECT MACRO TV POWER DETECT
I – TYPE SELECT
I – SERIAL SELECT
I PD VOLUME ENCODER IN
I PD PROTECT DETECT
– GND GND
I PD PROTECT DETECT
I PD NO USED
I – TUNER SIMUKE SWITCH 0~2
I PD TUNER SIMUKE SWITCH 3 (CHANNEL SPACE)
I – NO USED
O PD SP B SIGNAL OUTPUT
O PD DIGITAL REC SELECT (TC74HC153AF)
O PD DIGITAL REC SELECT STROBE (TC74HC153AF)
O PD REMOCON DATA TRANSMIT IC REQ
I PD REMOCON DATA TRANSMIT IC ENB
I PD REMOCON DATA TRANSMIT IC RWR
O PD REMOCON DATA TRANSMIT IC D0~D7
O PU ROOM A MUTE
O PU ROOM B MUTE
O PU SWch MUTE
O PU -20dB ATTENUATER
O PD VIDEO MUTE
O PD Sch MUTE
O PD TONE IC CE (TC9184AP)
x ao u163
y
i
2 9
8
Description
H : VR-2090
Q Q
3 6 7 1 3 1 5
L : SERIAL 16bit
ROOM A : L
co
.
9 4 2 8
L : VR-2080
0 5 8 2 9 9 4 2 8
H : SERIAL 8bit
ROOM B : H
m
9 9
9 9