Yamaha RX-V1800 Service Manual page 125

A B C
FUNCTION 4/4
1
FUNCTION (2)
11.3
0
0
0 IC350
2
0
0 IC350
0 -11.8
Page 121 F1
W3503
to DSP_CB560
0 0
0
0
3
0 0
0 -6.1
0 0
0 6.1
3.5
0 2.4
0 0
0 0
0 0
0 0
0 0.1
0 0.1
-0.2 0.1
0.1
-0.2
4
0 -11.3
IC351
0
0
0
0 IC351
0 11.7
5
IC352
IC352
IC353
IC353
6
CENTER
SUBWOOFER
to FUNCTION 3/4
7
FRONT L
SURROUND
BACK L
SURROUND L
8
0
0
0.8 0.8
0 0
9
0
0
0.8
0.8
0
0
10
(U, C, R, T, K, A, B, G, E, L models)
D E F
Page 126 E3 Page 137 H8
to OPERATION (3)_CB806 to FL (2)_CB967
IC354
INPUT/ZONE3
SELECTOR
IC354
to FUNCTION 3/4
0 0
0 0
0 0
0
-6.1
0 0
0
6.1
0 0
0 0
0 0
0 0
0
0
0 0.1
0 0.1
0 0.1
0 0
0
0
REC/ZONE2
SELECTOR
to FUNCTION 3/4
to FUNCTION 3/4
0
0
0
T-CONTROL
0
0.2 0
0 0
0 0
0.1 1.3
6.3 0
IC359
-6.1 -6.0
-6.1 0.9
6.3 0
0 6.3
0 4.7
0 6.3
6.3
-0.2
IC360
E-VOLUME
T-CONTROL
G H I
to FUNCTION 3/4
Page 137 L2
to FL (4)_CB963
CB351
to FUNCTION 3/4
J K L
IC350, 351: NJM2068MD-TE2
Dual operational amplifier
OUT 1 1 8 +V CC
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 -IN
1 2
–V 4 5 +IN
CC 2
IC355, 356: BD3841FS
Function switch
32 31 30 29 28 27 26
LOGIC
1 2 3 4 5 6
F-SW1: INPUT FUNCTION 1
*
F-SW2: INPUT FUNCTION 2
IC357, 358: YAC526-EZE2
2-chnnel high grade digital volume LSI
IN1
0 ~ -95dB
Vol B:
0 ~ +31.5dB
10 k-ohms
OPAmp
REF1B
REF1A
Vol A:
15 k-ohms
Zero
AVDD Crossing
Detector
DGND
Control
REF Register
AVSS
Zero S/P
DVSS Crossing 16 Register
Detector
Vol A:
15 k-ohms
REF2A
REF2B
Vol B: 0 ~ +31.5dB
10 k-ohms
0 ~ -95dB
IN2
OPAmp
IC359, 360: NJW1119AV
3-band tone control IC
32 31 30 29 28 27
+
–
–
+
1 2 3 4 5 6
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
M N
RX-V1800/HTR-6190/DSP-AX1800
25 24 23 22 21 20 19 18 17
7 8 9 10 11 12 13 14 15 16
100 ohms
OUT1
TE1
TE2
TE3 ZCEN1 1 24 IN1
ZCEN1
ZCEN2 2 23 REF1A
ZCEN2
REF1B
SDATAO(OpenDrain) CSN 3 22
SDATAI
SDATAI 4 21 OUT1
SCLK
CSN DGND 5 20 AVDD
REF 6 19 AVSS
DVSS 7 18 AVSS
SCLK 8 17 AVDD
SDATAO 9 16 OUT2
TE1 10 15 REF2B
100 ohms TE2 11 14 REF2A
OUT2
TE3 12 13 IN2
26 25 24 23 22 21 20 19 18 17
3-Band TONE
Ref 5V
VDD
3-Band TONE Control Logic
7 8 9 10 11 12 13 14 15 16
125