Yamaha RX-V2065 Service Manual page 124

A B C
RX-V2065/HTR-6295
DIGITAL 2/7
1
Page 130 E10 Page 136
to OPERATION (1)_CB401 to VIDEO (4)_W3601
2
3
4
5
3.3
3.3
6
7
IC22
3.3
3.3
0 3.3
3.3
3.3
0 0
8
9
DIGITAL (1)
10
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
124
D E F
To thermal protector
(C, R, T, K, A, B, G, E, F, L models)
Page 136 I9
C2 Page 139 K9 Page 133 K8
to VIDEO (3)_CB382
to ACDC (3)_CB611 to MAIN (1)_CB156
2
B
0 0
0
3.3
3.3
3.3
3.3
0
0
3.3
3.3 MAIN MICROPROCESSOR
3.3
3.3
0
IC20
3.3
3.3
0
1.6
3.3
0.7
0
0
3.3
0
0
3.3
3.3
3.3
1.2
1.1
3.3
3.3
0.4
0
3.3
A
3.3
3.3
3.3
G H
1
3.4
3.4
0 3.4
3.4 0
IC21
3.3
0
0
3.3
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
3.3
0
3.3
3.3
0
3.3
3.3
3.3
3.3
0
0
3.3
3.3
3.3
0
3.3 3.3
0.6
To DIGITAL 3/7
I J K
Page 135 F6
to VIDEO (1)_CB349
3.3
2.7
3.3
3.3
2.7
3.3
3.3
3.3
-11.5
3.3
3.3
-11.5
3.3
3.3
-11.5
3.3
3.3
-11.5
3.3
3.3
-11.5
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
RX-V2065/HTR-6295
Ohm 0 +1.0k +1.0k +1.5k +1.5k +2.2k
V 0 – 0.15 0.15 – 0.42 0.43 – 0.70 0.71 – 0.97 0.98 – 1.24 1.25 – 1.53
A/D value
0 – 11 12 – 32 33 – 54 55 – 75 76 – 95 96 – 118
(3.3 V=255)
KEY1 SCENE SCENE SCENE SCENE ZONE2 ZONE3
(133 pin) RADIO CD TV BD/DVD ON/OFF ON/OFF
Ohm 0 +1.0k +1.0k +1.5k +1.8k +2.2k
V 0 – 0.15 0.15 – 0.42 0.43 – 0.70 0.71 – 0.99 1.0 – 1.27 1.28 – 1.56
A/D value
0 – 11 12 – 32 33 – 54 55 – 77 78 – 98 99 – 120
(3.3 V=255)
KEY2 PURE STRAIGHT / ZONE PRESET PRESET
INFO
(134 pin) DIRECT EFFECT CONTROLS < >
To DIGITAL 4/7
L M N
POINT A XL20 (Pin 20 of IC20)
POINT B 1 / CB24 (+3.3M), 2 / CB24 (/RESET)
CB24 1
(+3.3M)
CB24 2
(/RESET)
POWER ON POWER OFF
To DIGITAL 5/7
CB24 1
(+3.3M)
CB24 2
(/RESET)
3.3
3.3
POWER ON
3.3
3.3
3.3
0.2
3.3
3.3
Page 137 B2
3.3
to GUI_CB501 IC21: R1172H331D-T1-F
3.3
Voltage regulator
3.3
3.3
0
0.3
V DD 4 5 V OUT
0
0.7
CB28
To DIGITAL 7/7 Vref
To DIGITAL 6/7
Current Limit
CE 1 2 GND
To DIGITAL 7/7
To DIGITAL 6/7, 7/7
Pin No. Symbol Description
To DIGITAL 6/7
1 CE Chip Enable Pin
To DIGITAL 6/7, 7/7 2 GND Ground Pin
3 NC No Connection
4 V DD Input Pin
5 V Output Pin of Voltage Regulator
OUT
To DIGITAL 7/7
To DIGITAL 6/7
IC22: LE25LB2562M-TLM-E
To DIGITAL 7/7
256 k-bit serial SPI EEPROM
(U model)
X ·
EEPROM
DECODER
ADDRESS Cell Array
BUFFERS
and
LATCHES
Y ·DECODER
CONTROL I/O BUFFERS
and
LOGIC DATA LATCHES
3.3 SERIAL INTERFACE
0
CS# SCK SI SO WP# HOLD#
3.3
3.3
CS# 1 8 VDD
3.3 2 7
SO HOLD#
0.6 WP# 3 6 SCK
VSS 4 5 SI
Writing port
0
3.3
IC22: LE25LB643M-TLM-E
0
64 k-bit serial SPI EEPROM
3.3
(C, R, T, K, A, B, G, E, F, L models)
CB27
W83
X -
CB29 EEPROM
DECODER
17.8 ADDRESS Cell Array
BUFFERS
Page 134 G2
5.0 and
LATCHES
0
to VIDEO (1)_CB302
5.0 Y - DECODER
3.3
3.3 CONTROL I/O BUFFERS
and
LOGIC DATA LATCHES
3.3
0
SERIAL INTERFACE
3.3
Page 123 C5
0
CS# SCK SI SO WP# HOLD#
to DIGITAL (3)_CB81
3.3
CS# 1 8 VDD
2 7
CB30 SO HOLD#
WP# 3 6 SCK
VSS 4 5 SI
IC20: M3087BFKBGP
Microprocessor
8 8 8 8 8 8 8
Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6
< (3) > < CC1 (3) >
V CC2 V
Peripheral Functions
A/D Converter: Clock Generation Circuit
1 circuit X IN - X OUT
Timer (16-bit) Standard: 10 inputs X CIN - X COUT
(2)
Timer A: 5-channel Maximum: 34 inputs On-chip Oscillator
Timer B: 6-channel
PLL Frequency Synthesizer
UART/Clock Synchronous Serial I/O:
Three-Phase Motor Control Circuit 5-channel DMAC
Watchdog Timer (15-bit) X/Y Converter: DMACII
16-bit x 16-bit
+3.3k +4.7k +22.0k +33.0k
D/A Converter: CRC Calculation Circuit (CCITT):
8-bit x 2-channel CAN Module: 1-channel X 16 +X 12 +X 5 +1
1.54 – 1.84 1.84 – 2.1 2.34 – 2.55 2.55 – 2.97
M32C/80 series microprocessor core
119 – 142 143 – 162 181 – 197 198 – 229 Memory
Intelligent I/O
R0H R0L FLG
MAIN ZONE TONE
ROM
— — R1H R1L INTB
Time Measurement: 8-channel
ON/OFF CONTROL
Waveform Generating: 8-channel R2 ISP
Communication Functions:
R3 USP
Clock Synchronous Serial I/O, UART, RAM
+3.3k +4.7k +6.8k +10.0k
HDLC Data Processing A0 PC
1.57 – 1.86 1.86 – 2.14 2.14 – 2.4 2.4 – 2.65 A1 SVF
FB SVP
Multiplier
121 – 143 144 – 165 166 – 185 186 – 205 SB VCT
< V (3) > < V (3) >
CC1 CC2
BAND/ TUNING CH TUNING CH
MEMORY Port P14 Port P15 Port P11 Port P12 Port P13
CATEGORY < >
7 8 5 8 8
(Note 1)
NOTES:
1. Ports P11 to P15 are provided in the 144-pin package only.
2. Included in the 144-pin package only.
3.The supply voltage of M32C/84T (High-reliability version) must be V CC1 =V CC2 .