Kenwood VR-205, Service Manual

Page: 11 / 40

KRF-V5010/V6010/V7010/VR-205/206/207/255/257
11
CIRCUIT DESCRIPTION
Pin No. Pin name I/O Description Active
1, 2 G10~G11 O FL (11-MT-116GK) GRID 10, 11
3 – – Unused
4 RDS. CK I RDS IC (SAA6579) clock input control
5 RDS. DT I RDS IC (SAA6579) data input control
6 – I Unused
7 VOL. ENC. A I Volume encoder A (CW) signal
8 REMOCON I Remote control
9 VOL. ENC. B I Volume encoder B (CCW) signal
10, 11 – O Unused
12~14 KR0 - KR2 I Key return 0~2
15 PROTECT I Protection detect H : PROTECT
16 S. DATA I/O Serial communication data
17 S. BUSY I/O Serial communication busy
18 E2. DT I/O E2PROM data
19 E2. CLK O E2PROM clock
20 SEL. ENC.A I Selector encoder A (CW)
21 SEL. ENC.B I Selector encoder B (CCW)
22 MULTI. ENC.A I Multi control encoder A (CW)
23 MULTI. ENC.B I Multi control encoder B (CCW)
24 SER.IN I Serial communication 8bit/16bit changeover L : 8bit H : 16bit
25 SAP.M1 O SAP IC (CXA1124BS) M1 control
26 SAP.IN I SAP IC (CXA1124BS) SAP signal control L : sap
27 SAP.M2 O SAP IC (CXA1124BS) M2 control
28 Vdd – Analog power supply (+5V)
29 S.LEVEL I Signal level A/D input
30 P/L. DT O PROLOGIC IC (M62460FP) strobe L : active
31 P/L. CK O PROLOGIC IC (M62460FP) clock L : active
32 P/L. ST O PROLOGIC IC (M62460FP) data
33 PLL. DO I PLL IC DO signal
34 PLL. ST I TUNER STEREO signal detect L : STEREO
35 PLL. SD I TUNER SD signal detect L : TUNED
36 RCV. CE I RECEIVER CHIP ENABLE signal L : ENABLE
37 AVss – Analog GND
38 RESET I u-Com reset
39 EXTAL I Main clock (8MHz)
40 XTAL – Main clock (8MHz)
41 Vss – u-Com GND
42 TX – Unused
43 TEX I GND
44 Vdd – +5V
45 Vfdp – -33V
46 SEL. ST1 O TC9162AF/63AF/64AF strobe1 H : LATCH
47 PLL. DT O PLL IC DATA signal output
48 PLL. CK O PLL IC CLOCK signal output
49 PLL. CE O PLL IC CE signal output
50 T. MUTE O Tuner mute control L : MUTE ON
51 A. MUTE O Output mute control L : MUTE ON
52 SW. MUTE O SUB WOOFER mute control L : MUTE ON
53 10dB. ATT O VOLUME 10dB ATTENUATOR control L : ATT ON
54 VOL. DT O VOLUME IC (M62446SP) data control
55 VOL. CK O VOLUME IC (M62446SP) clock control H : active
56 VOL. ST O VOLUME IC (M62446SP) strobe control H : active
57 VCR. MUTE O VIDEO IC (NJU2279D) cont2/4 control L : mute on
58 VCR. A O VIDEO IC (NJU2279D) cont1 control H/L : static
59 VCR. B O VIDEO IC (NJU2279D) cont3 control H/L : static
60 FA. RLY O Front SP. A relay control H : relay ON
61 FB. RLY O Front SP. B relay control H : relay ON
62 C. RLY O Center SP. relay control H : relay ON
63 S. RLY O Surround SP. relay control H : relay ON
6. Microprocessor pin description
KRF-V5010(K) COVER( 98.12.9 12:22 y [ W 18
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