Service manual

★ 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.
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JKLMN
RX-V665/HTR-6260
110
DIGITAL 2/5
IC20
CB20
CB21
CB22
CB23
CB24
CB25
IC21
CB27
CB26
IC22
3.4
3.4
0 0.7
0 1.1 0 1.2
3.4
3.4 3.4
3.4
3.4 3.4
1.5
0 0 0 0 0
0 0
3.4 3.4 3.4
3.3 3.3 3.3 3.3 2.7 2.7 0.3 3.3 3.4 0.3 3.2
3.2
0
0
1.7 3.3
3.3
3.1
3.4
3.4 3.4
3.4 3.4 3.4 3.4 3.4 3.4 3.4 2.7
3.4
3.3 3.3
3.3
3.3 3.3 3.3 3.3 3.3
3.3
3.3 3.3
0
0 0 0 0 0 0 0 0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3.4
3.4
3.4
3.3
0
0
3.4
0
0.4
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
1.5
3.4
3.4
3.4
3.4
0.7
1.2
1.2
1.1
3.3
0
0
0
0
0
0
0
0
0
0
0
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.4
3.4
3.4
3.4
3.4
3.4
3.33.4
0
3.4
3.4
3.4
2.5
2.5
3.4
0
3.4
2.7
3.3
3.4
3.4
-11.7
3.4
3.4
-11.9
3.4
3.4
-11.9
3.4
3.4
-11.9
3.4
3.4
-11.9
3.4
3.4
3.4
2.7
3.3
3.4
3.4
5.5
5.5
0
3.4
3.4
3.4
3.4
0
3.3
POINT B XL20 (Pin 20 of IC20)
B
VDD
CE
Pin No.
1
2
3
4
5
Symbol
CE
GND
NC
V
DD
VOUT
Description
Chip Enable Pin
Ground Pin
No Connection
Input Pin
Output Pin of Voltage Regulator
Vref
45
12
Current Limit
VOUT
GND
IC21: R1172H331D-T1-F
Voltage regulator
IC22: LE25LA322M-TLM-E
32 k-bit serial SPI EEPROM
SERIAL INTERFACE
Y ·DECODER
1
2
3
4VSS
WP#
SO
CS#
SI
SCK
HOLD#
VDD
8
7
6
5
X ·
DECODER
EEPROM
Cell Array
CONTROL
LOGIC
I/O BUFFERS
&
DATA LATCHES
ADDRESS
BUFFERS
&
LATCHES
CS# SCK SI SO WP# HOLD#
IC20: M30878JBGP
Single chip 16/32-bit microprocessor
Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6
Port P7
Port P14 Port P15 Port P11 Port P12
Port P10Port P9Port P8
P85
Port P13
R0H R0L
R1H R1L
R2
R3
A0
A1
FB
SB
NOTES:
1. Ports P11 to P15 are provided in the 144-pin package only.
2. Included in the 144-pin package only. 26 inputs maximum in the 100-pin package.
3. 6-channel available in the 100-pin package.
4. 6-channel available in the 100-pin package.
5. 10-channel available in the 100-pin package.
FLG
INTB
ISP
USP
PC
SVF
SVP
VCT
Multiplier
M32C/80 series microprocessor core
Clock Generation Circuit
XIN - XOUT
XCIN - XCOUT
On-chip Oscillator
PLL Frequency Synthesizer
A/D Converter:
1 circuit
Standard: 10 inputs
Maximum: 34 inputs
(2)
UART/Clock Synchronous Serial I/O:
7-channel
(3)
CRC Calculation Circuit (CCITT):
X
16
+X
12
+X
5
+1
X/Y Converter:
16-bit x 16-bit
D/A Converter:
8-bit x 2-channel
Peripheral Functions
<VCC2>
<
VCC1>
<VCC1>
ROM
RAM
Memory
<VCC1>
<VCC2>
78 5 8 8
(Note 1)
8
8
7
888888 8
8
DMACII
DMAC
Watchdog Timer (15-bit)
CAN Module: 2-channel
Intelligent I/O
Time Measurement: 8-channel
(4)
Wave Generating: 16-channel
(5)
Communication Functions:
Clock Synchronous Serial I/O, UART,
HDLC Data Processing
Timer (16-bit)
Timer A: 5-channel
Timer B: 6-channel
Three-Phase Motor Control Circuit
MICROPROCESSOR
to DIGITAL 4/5
to DIGITAL 1/5
to DIGITAL 5/5
R201
RX-V665
HTR-6260
5.6K
8.2K
to DIGITAL 3/5
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm 0 + 1.0k + 1.0k + 1.5k + 1.8k + 2.2k + 3.3k + 4.7k + 6.8k + 10.0k + 22.0k + 68.0k
V 0 – 0.15 0.15 – 0.42 0.43 – 0.70 0.71 – 0.99 1.0 – 1.27 1.28 – 1.56 1.57 – 1.86 1.86 – 2.14 2.14 – 2.4 2.4 – 2.65 2.66 – 2.91 2.92 – 3.17
A/D value
(3.3 V=255)
0 – 11 12 – 32 33 – 54 55 – 77 78 – 98 99 – 120 121 – 143 144 – 165 166 – 185 186 – 205 206 – 225 226 – 245
KEY2 (134 pin)
PURE
DIRECT
STRAIGHT INFO MEMORY
PRESET
<
PRESET
>
CATEGORY <
FM
CATEGORY >
AM
TUNING CH
<
TUNING CH
>
INPUT
<
INPUT
>
Ohm 0 + 1.0k + 1.0k + 1.5k + 1.5k + 2.2k + 3.3k + 4.7k + 22.0k + 33.0k
V 0 – 0.15 0.15 – 0.42 0.43 – 0.70 0.71 – 0.97 0.98 – 1.24 1.25 – 1.53 1.54 – 1.84 1.84 – 2.1 2.34 – 2.55 2.55 – 2.97
A/D value
(3.3 V=255)
0 – 11 12 – 32 33-54 55 – 75 76 – 95 96 – 118 119 – 142 143 – 162 181 – 197 198 – 229
KEY1 (133 pin)
SCENE
RADIO
SCENE
CD
SCENE
TV
SCENE
BD/DVD
ZONE2
ON/OFF
ZONE2
CONTROL
PROGRAM
>
PROGRAM
<
MAIN ZONE
ON/OFF
TONE
CONTROL
Writing port
to OPERATION (1)_CB401
Page 114
E10
to VIDEO (4)_W3601
Page 120 B2
to MAIN (5)_CB157
Page 116 K7
to MAIN (1)_CB156
Page 117 K8
to VIDEO (3)_CB382
Page 120 I9
to VIDEO (1)_CB349
Page 119 G8