Sony XR-5-W-497-RB Service manual
XR-5W497RB
SERVICE MANUAL
AEP Model
MICROFILM
Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks of Dolby
Laboratories Licensing Corporation.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
FM/AM CASSETTE CAR STEREO
– 1 –
SERVICE NOTE
TABLE OF CONTENTS
Each time the power is turned on, the security must be released
before the set can be operated.
Method of Releasing the Security of the XR-5W497RB
1. Turn on the power from the power cord.
2. Wait until the LCD display changes from “SAFE” to “1000”.
3. Input “1234” with the preset buttons on the set.
Input method:
Push the preset button 1 once, button 2 twice, button 3 three
times, and button 4 four times.
4. Press and hold down the ‚ or · button for two seconds.
Note : If an attempt to release the security by this method fails
twice, the system is locked.
In this case, allow the set to be activ ated for about one hour ,
then turn off the power and perform the follo wing steps again.
1. DISASSEMBLY
1-1. Cover (Upper) ....................................................................3
1-2. Front Panel Assy ................................................................3
1-3. Mechanism Deck Block .....................................................4
1-4. Cover (Lower) ....................................................................4
1-5. Heat Sink ............................................................................5
1-6. Main Board ........................................................................5
2. DIAGRAMS
2-1. IC Pin Descriptions ............................................................6
2-2. Block Diagram – Tape Section –......................................11
2-3. Block Diagram – Tuner Section –....................................13
2-4. Block Diagram – DSP Section – ......................................15
2-5. Printed Wiring Board – Main Section – ...........................17
2-6. Schematic Diagram – Main Section –..............................21
2-7. Printed Wiring Boards – TIM/DSP Section – ..................26
2-8. Schematic Diagram – TIM Section –............................... 28
2-9. Schematic Diagram – DSP Section –............................... 31
2-10. Printed Wiring Board – Connector Section – ...................35
2-11. Schematic Diagram – Connector Section – .....................37
2-12. Printed Wiring Board – Panel Section –...........................40
2-13. Schematic Diagram – Panel Section – .............................43
3. EXPLODED VIEWS
3-1. Main Section .................................................................... 51
3-2. Front Panel Section ..........................................................52
4. ELECTRICAL PARTS LIST....................................53
– 2 –
SECTION 1
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
1-1. COVER (UPPER)
3
claw
5
claws
6
cover (upper)
1
PTT 2.6X6
1-2. FRONT PANEL ASSY
1
screw (2x4.5)
3
claws
4
claws
4
claw
2
claw
6
front panel assy
– 3 –
5
connector
2
screw (2x4.5)
6
t
1-3. MECHANISM DECK BLOCK
5
mechanism deck block
4
connector
1
PTT 2.6X6
2
PTT 2.6X
1-4. COVER (LOWER)
2
3
claw
5
claws
claw
6
cover (lower)
3
connector
1
PTT 2.6X6
7
insulating shee
4
claw
– 4 –
6
1-5. HEAT SINK
4
1
PTT 2.6X6
heat sink
3
2
PTT 2.6X6
PTT 2.6X6
1-6. MAIN BOARD
3
ground point screw
5
MAIN board
4
ground point screws
2
PTT 2.6X
1
PTT 2.6X6
– 5 –
SECTION 2
DIAGRAMS
2-1. IC PIN DESCRIPTIONS
• IC801 µPC78074 (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 KEY-REQ I Key request input (L: Key request)
2 – 4 — O Not used in this set.
5 LCD-ON O LCD control output (H: LCD display ON)
6 LCD1-CE O LCD chip enable output (L: Chip enable ON)
7 LCD1-DATA I/O LCD data input/output (Input: When key data read)
8 LCD1-CLK O LCD clock output
9 IC — Ground
10 X2 — Main clock (X’ tal 4.9152 MHz)
11 X1 I Main clock input (X’ tal 4.9152 MHz)
12 VDD — Not used in this set.
13 XT2 — Sub clock (Open)
14 XT1 I Sub clock (Pulled-up to VDD.)
15 RESET I System reset input (L: When back-up 5 V fail)
16 S-REMOTE I Steering remote commander interrupt input
17 B/U-DOWN I +B check interrupt input (L: +B normal, H: +B low or high)
18 S-CONT ACT I S-contact interrupt input (L: Interrupt request)
19 KLINE/TEL I TEL/K-line interrupt input (L: Interrupt request)
20 ON-KEY I “ON” key interrupt input (L: Interrupt request)
21 TIM/EJ-IN I “TIM/EJECT” key interrupt input (L: Interrupt request)
22 LCD2-ENI I 2nd display chip enable interrupt input (L: Interrupt request)
23 AVDD — Analog power supply pin (+5 V)
24 AVREF0 — Analog reference voltage 0
25 +B-AD I +B voltage sense AD input (Low V: > 0.6 V, High V: > 2.2 V)
26 AD-ILL-DUTY I Illumi., dimmer voltage AD input (Converted PWM to voltage.)
27 AD-SP-FL-OPEN I Front Ieft speaker open detect input (AD)
28 AD-SP-FR-OPEN I Front right speaker open detect input (AD)
29 AD-SP-RL-OPEN I Rear left speaker open detect input (AD)
30 AD-SP-RR-OPEN I Rear right speaker open detect input (AD)
31 VDD-P-ON O Switched 5 V power control output (L: Under sleep mode)
32 P-ON O Main power control output (H: Power on)
33 AVSS — Analog ground
34 BEEP DA O Beep wave DA output
35 DSP-PD O DSP power down control output (L: Power down)
36 AVREF1 — Analog reference voltage 1
37 K-LINE (RX) I K-line receive data input (9600 bps)
38 K-LINE (TX) O K-line transmit data output (9600 bps)
39 TEL-MUTE I Telephone mute input (L: Telephone mute request)
40 VSS — Ground
41 LCD2-ENO O 2nd display chip enable line control output (H: Chip enable line activate)
42 LCD2-DATA-OUT O 2nd display data output
43 LCD2-CLK O 2nd display clock output
44 DSP-CS O DSP chip select output
45 DSP-WRDY I DSP write ready input
46 DSP-DATA-IN I DSP data input (SI)
47 DSP-DATA-OUT O DSP data output (SO)
48 DSP-SCLK O DSP data clock output
49 DSP-DRDY I DSP data ready input
50 DSP-WRQ O DSP write request output
51 DSP-RST O DSP reset output (L: Reset & power down)
52 EV-DATA-R O Electric volume data output (Rear)
53 EV-CLK O Electric volume clock output
– 6 –
Pin No. Pin Name I/O Pin Description
54 EV-DATA-F O Electric volume data output (Front)
55 VOL-CE O Electric volume chip enable output
56 AUDIO-MUTE O Audio mute output (H: ON, L: OFF)
57 ANT-AMP1 (OPEN) I Antenna diagnose input 1 (Open detect)
58 ANT-AMP2 (SHORT) I Antenna diagnose input 2 (Short detect)
59 SP (FRONT)-OPEN I Front speaker open detect input (H: Open, L: Load) (Not used in this set.)
60 SP (FRONT)-CLIP I Front speaker clip detect input (H: OK, L:Clip)
61 SP (FRONT)-SHORT I Front speaker short detect input (H: OK, L: Short)
62 SP (REAR)-OPEN I Rear speaker open detect input (H: Open, L: Load) (Not used in this set.)
63 SP (REAR)-CLIP I Rear speaker clip detect input (H: OK, L: Clip)
64 SP (REAR)-SHORT I Rear speaker short detect input (H: OK, L: Short)
65 SUB-WAKE-UP O Sub-micon communication wake-up request output
66 SUB-CLK O Sub-micon communication clock output
67 SUB-DATA-IN I Sub-micon communication data input
68 SUB-DATA-OUT O Sub-micon communication data output
69 AUSEL (MAIN) 1 O Audio select 1 (L: Tape or CD, H: AM)
70 AUSEL (MAIN) 2 O Audio select 2 (L: Tape or AM, H: CD)
71 VSS — Ground
72 AUSEL (SUB) 1 O Audio select 3 (L: AM or TEL, H: TIM)
73 AUSEL (SUB) 2 O Audio select 4 (L: AM or TIM, H: TEL)
74 SUB-BUSY (O.D) I Sub-micon communication status input (L: Sub-micon standby)
75 (O.D) — Not used in this set.
76 EXAMP-NG (O.D) I External amplifier remote output line short detect (Diagnose) input (H: Short detect)
77 (O.D) — Not used in this set.
78 AMP-DIAG O Amplifier diagnose on output (H: ON)
79 AUDIO-ON O Amplifier power on output (H: ON)
80 EXAMP-ON O External amplifier on output (H: ON, L: Standby)
81 AMP-MODE O Amplifier mute output (H: Operating, L: Mute ON)
82 GALA-IN I GALA input
83 — — Not used in this set.
84 EJ-KEY I “EJECT” key input (L: ON)
85 TIM-KEY I “TIM” key input (L: ON)
86 TP-KEY I “TP” key input (L: ON)
87 — — Not used in this set.
88 K-LINE-MODE O K-line mode output (L: Normal, H: Master (For security))
89 ILLUMI-ON O Illumination ON output (H: ON, L: OFF)
90, 91 — — Not used in this set.
92 ROT-IN-A I Rotary encoder input 1
93 ROT-IN-B I Rotary encoder input 2
94 – 97 (O.D) — Not used in this set.
98 SAFE-HOLD-OUT O Safety hold output
99 SAFE-DET-IN O Safety detect input
100 PTEST I Test mode input (H: Normal mode, L: Test mode)
– 7 –
• IC201 MN1886426 (SUB SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 RD O TIM read output (L: Read request)
2 — — Not used in this set.
3 D3 I/O TIM D3 (Status NAR)
4 D2 I/O TIM D2 (Status VPM)
5 D1 I/O TIM D1 (Status RPM)
6 D0 I/O TIM D0 (Status BSY)
7 VDD — Power supply
8 OSC1 I Main X’ ftal input (8 MHz)
9 OSC2 O Main X’ ftal output (8 MHz)
10 VSS — Ground
11 XI I Sub X’ ftal input (32.768 kHz)
12 XO O Sub X’ ftal output (32.768 kHz)
13 EXI I Connect to ground. (L: Single chip mode)
14 RESET I System reset input
15 GALA-IN I GALA pulse input (IRQ2)
16 B/U-CHECK I +B check input (H: +B low or high) (IRQ1)
17 WAKE-UP I Sub-micon wake-up request input (IRQ0)
18 VDD-PON O Sub power control output (H: Power ON)
19 TUNER-ON O Tuner power control output (H: Power ON)
20 – 22 — — Not used in this set.
23 TU-MUTE O Tuner mute output (H: ON, L: OFF)
24 ANT-ON O Antenna power control output (H: Power ON)
25 INDICATOR O Indicator LED control output (H: LED ON)
26 TAPE-RESET O Tape reset output (L: Reset)
27 TAPE-METAL O Tape metal mode output (H: Metal, L: Normal)
28 TAPE-AMS-GAIN O Tape AMS gain output (H: Normal, L: Search)
29 TAPE-ON O Tape power control output (H: Power ON)
30 TAPE-SCL (O.D) O Tape serial clock output (< 70 kHz)
31 TAPE-SDA (O.D) O Tape serial data output (< 70 kHz)
32 TAPE-CRQ I Tape communication request input (L: Request from CC mechanism block)
33 TAPE-MUTE O Tape mute output (H: ON)
34 TAPE-F/R O Tape head select control output (H: Reverse, L: Forward)
35 TAPE-DOLBY O Tape dolby mode control output (H: Dolby ON)
36 TAPE-AMS-IN I Tape music sense input (H: Blank detect)
37 TAPE-INSERT I Tape insert switch input (H: Tape in, L: No cassette)
38 SD-IN I SD input (H: Station detect)
39 CDC-CLK I CDC clock input (Synchronus serial clock)
40 CDC-D-IN I CDC data input (Synchronus serial data)
41 CDC-D-OUT I CDC data output
42 CDC-CTL O CDC control output (H: CTL ON)
43 SUB-BUSY O Main-micon communication busy output
44 MST-CLK I Main-micon communication clock input
45 MST-D-IN I Main-micon communication data input
46 MST-D-OUT O Main-micon communication data output
47 VDD — Power supply
48 AVDD — Analog power supply
49 VREF+ — Analog reference voltage +
50 RDS-DATA-IN I RDS data input
51 RDS-RDS-ID I RDS ID input
52 RDS-SYNC I RDS SYNC input
53 S-CONTACT I S-contact input (L: S-contact ON)
54 NOISE-DET I Radio noise detect input (AD)
– 8 –
Pin No. Pin Name I/O Pin Description
55 MULTI-P ATH I Multi-path sense input (AD)
56 AM-S.METER I AM S-meter input (AD)
57 FM-S.METER I FM S-meter input (AD)
58 VREF– — Analog reference voltage –
59 AVSS — Analog ground
60 VSS — Ground
61 RDS-CE O RDS chip enable output
62 RDS-CLK O RDS clock output
63 RDS-DATA-OUT O RDS data output
64 RDS-SYR O RDS SYR output
65 PDWN O TIM power down output (L: Power down)
66 RESET O TIM reset output (L: Reset)
67 NOISE-ON O Noise detect control (L: Noise detect ON)
68 E2CK O EEPROM data clock output
69 SEEK-OUT O Seek control output (H: Receive, L: Seek)
70 E2D (O.D) I/O EEPROM data input/output
71 (O.D) — Not used in this set.
72 FM-MS-IN I FM audio detect input (H: Audio detect)
73 PLL-CE O PLL chip enable output
74 PLL-CLK O PLL clock output
75 PLL-DATA-OUT O PLL data output
76 PLL-DATA-IN I PLL data input
77 WIDNAR OUT2 O WIDE/NARROW control output 2 (H: Forced wide, L: Auto mode)
78 WIDNAR OUT1 O WIDE/NARROW control output 1 (H: Forced nornal, L: Auto mode)
79 CE O TIM chip enable output (H: Chip enable)
80 WR O TIM write output (L: Write request)
– 9 –
– 10 –
XR-5W497RB
3-2. BLOCK DIAGRAM — TAPE SECTION —
FWD
REV
MECHANISM
TAPE
SW+B
SW5V
INSERT
S-CLK
S-DATA
C-REQ
RESET
CN451
3
7
1
4
5
6
8
R-CH
R-CH
EQ AMP/DOLBY NR
IC401
48 18
EQ
AMP
46
R-CH
43
41
RV431
DOLBY
LEVEL
L-CH
TA +B
TA 5V
DOLBY
NR
AUTO
MUSIC
SENSOR
RADIO/TAPE
70U/120U
R/F
ON/OFF
MS
MS-GV
IC201 (2/2)
TUNER ON
CDC-CTL
INDICATOR
TUNER
SECTION
OSC 1
OSC 2
XI
XO
E2D
E2CK
A
8
9
11
12
70
68
19
42
X201
8MHz
X202
32.768kHz
EEP ROM
IC241
5
DATA
CLK
6
LED
DRIVE
Q81
BATT
D81
POWER
CONTROL
Q231,232
BATT
8.5V REG
Q233
POWER
SWITCH
Q911,912
TU +B
TU 8.5V
BATT
ISO701 (3/5)
16
17
CDC +B
CDC-CLT
TAPE L
SUB SYSTEM CONTROL
34
17
14
37
21
19
16
F/R
27
METAL
35
DOLBY
36
AMS
28
AMS GAIN
33
MUTE
37
INSERT
30
SCL
31 25
SDA
32
CRQ
26
RESET
POWER
TA +B
Signal path
: PB
04
TA 5V
5V REG
Q452
CONTROL
Q450,451
BATT
29 40
TAPE ON
CDC
D OUT
D IN
CLK
41
39
CDC DATA
OUT
Q702
CDC DATA
IN
Q703
CDC CLK
IN
Q704
14
13
15
CDC DOUT
CDC DIN
CDC CLK
– 11 – – 12 –
R-CH
J101
(ANTENNA)
2
1
16
12
14
13
19
20
18
AM ANT
FM ANT
8
FM +B
9
+B
10
AM +B
L CH
R CH
AM DET
AM IF
SEEK
S-METER
SD
5
VT
22
ST-IND
11
AM IFC
21
FM IFC
6
VCO
4
DX/LO
15
WID/NAR
23
FM DET
24
FORCED
WID/NAR
TUNER UNIT
TU101
R-CH
IC581
31
IC561
12 8
IC521
3
2
1
Q571
Q140
3 9
16
AM NOISE
CANCEL
IC141
1 7
3
2 4
5
SOURCE SELECT
IC511
R-CH
ISO701 (1/5)
11
19
20
7
12
11
12
13
15
14
9 10
SOURCE SELECT
IC531
TAPE
SECTION
A
TAPE L
AUDIO L
DSP
SECTION
B
BATT H
CHECK
Q253
BATT L
CHECK
Q251,252
5V REG
Q803
POWER
CONTROL
Q801,802
RESET
IC802
POWER
CONTROL
Q804,805
POWER
CONTROL
Q236,237
BATT
D252
D251
Q254
2 1
VDD B
VDD A
1623
14
17
43
18
TU MUTE
69
SEEK
56
57
55
S-METER (AM)
S-METER (FM)
MULTI PATH
SD
B/U DOWN
RESET
VDD
P-ON
WAKU-UP
BUSY
44
CLK
45
D-IN
46
D-OUT
CE
D IN
CLK
D OUT
XOUT
X IN
15
GALA
53
S-CONTACT
65
PDWN
AOUT
XT
XT
SAS SAS
TAS
SAD
CS
DOUT
DIN
WE
RWCK
TAS
SADX
CSI
D IN/OUT
WE
RWCK
66
RESET
80
WR
1
RD
79
CE
D0-3
3-6
VDD D
VDD A
VDD C
MUTE
CONTROL
Q573,574
S-METER
CONTROL
Q171,172
38
CE
73
DO
75
CLK
74
DI
AOUT
MONO/STE
AM IF
FM IF
76
RV171
S-METER
SUB SYSTEM CONTROL
IC201 (1/2)
WID/NAR 1
WID/NAR 2
77
78
SYNC
52
ID
51
D IN
50
CLK
62
D OUT
63
CE
61
SYR
64
ANT ON
24
FM MS
72
NOISE ON
67
NOISE DET
54
2
3
4
5
22
9
13
14
FM OSC
17
AM OSC
16
DX/ILO
11
WID/NAR
8
1
24
FM ON
12
AM ON
11
MPX SYNC
ID
DO
CL
DI
CE
SYR
XO
XI
X120
7.2MHz
X210
4.332MHz
WID/NAR
CONTROL
Q151,152
Q161
POWER
CONTROL
Q101
POWER
CONTROL
Q103
FM 8.5V
AM 8.5V
TU8.5V
8.5V REG
Q130
VT +B
POWER
CONTROL
Q136,137
ANT +B
TU +B
RDS MODULATOR
IC210
2 18
19
20
21
22
23
24
12
13
NOISE
DET
IC181
5 1
APS
IC303
1 5
Q181
RDS
4
35
53
54
55
56
26
1-4
18
47
48
36
37
39
40
44
46
50
TIM CONTROL
IC301
X301
4.195MHz
22
18
23
17
15
11
16
2
TIR DEMOD
IC302
BATT
VDD B
VDD A
31
15
17
72
73 99
70
69
MAIN 1
MAIN 2
SUB 2
SUB 1
B/U CHECK
RESET
VDD P-ON
65
WAKU-UP
74
BUSY
66
CLK
68
D-OUT
67
D-IN
82
GALA
18
S-CONTACT
AUSEL
DET
16
S-REMOTE
58
ANT OPEN
98
HOLD
39
TEL MUTE
19
KLINE/TEL
37
RX
38
TX
88
MODE
26
ILL DUTY
SAFE
CONTROL
Q861-863
TEL MUTE
DET
Q785,786
SECURITY
TX
Q827-829
POWER
CONTROL
Q825,826
ILLMI
DET
Q901
GALA
Q703
S-
CONTACT
Q714
LED
DRIVE
Q31,32
ANT SHORT
DET
Q135
57
ANT OPEN
ANT OPEN
DET
Q131-134
SAFE DET
IC841
Q815
1 2
BATT
F701
35
33
+B
SAFE
30
TEL-MUTE
31
K-LINE
29
GALA
34
ILLUMI
32
S-CONTACT
SAFE
SYSTEM CONTROL
IC801 (1/2)
1
4
RX
TX
6
K-LINE
ISO701 (2/5)
ILL DUTY
DSP
SECTION
C
Q902
Q906
BATT
BATT
D812
D31-51, 53-56
(KEY BACK LIGHT)
S-REMOTE
CDC-L
CDC-R
TEL (+)
TEL (–)
04
FM 8.5V
TU 8.5V
AM 8.5V
S-
REMOTE
Q705
PLL
IC211
PWN
D0-3
RESET
WR
RD
CE
LIN
D802
Signal path
: FM
: AM
: CD
K-LINE
IC821
2-3. BLOCK DIAGRAM — TUNER SECTION —
– 13 – – 14 –
XR-5W497RB
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