DOWNLOAD Sony XR-C550 / XR-C550W Service Manual ↓ Size: 790.61 KB | Pages: 41 in PDF or view online for FREE

Model
XR-C550 XR-C550W
Pages
41
Size
790.61 KB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
xr-c550-xr-c550w.pdf
Date

Sony XR-C550 / XR-C550W Service Manual ▷ View online

– 21 –
AM (MW) Auto Scan/Stop Level Adjustment
Setting :
SOURCE 
n MODE button
: AM (US,
Canadian model)
: MW (E model)
FREQUENCY SELECT switch (E model) : MW 10k
AM RF signal
generator
AM dummy
antenna (50 
)
antenna
terminal
set
15 pF
30 
65 pF
Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
output level
: 33 dB (44.7 µV)
FM Noise Focus Adjustment (E model)
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch : FM 200k
FM RF signal
generator
antenna
terminal
set
0.01 µF
10 k 
level meter
LINE OUT REAR
Carrier frequency : 97.9 MHz
Output level
: 60 dB (1 mV)
Mode
: mono
Modulation
: 1 kHz, 75 kHz deviation (100%)
Procedure :
1. Tune the 97.9 MHz.
2. The then output level is supposing that 0 dB.
3. Adjust with the volume RV3 on TU11 so that the output level is
– 32 ± 2 dB then signal generator input set to – 20 dB.
Adjustment Location : See page 22.
FM RF signal
generator
antenna
terminal
set
0.01 µF
10 k 
level meter
LINE OUT REAR
FM Stereo Separation Adjustment
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (E model) : FM 200k
Carrier frequency : 97.9 MHz
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 33.75 kHz deviation (45%)
  sub
: 1 kHz, 33.75 kHz deviation (45%)
  19 kHz pilot : 7.5 kHz deviation (10%)
L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.
Specification : Separation more than 28 dB
Adjustment Location : See page 22.
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV4 on TU11 for
minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV4 on TU11 for
minimum reading.
Procedure :
Procedure :
1. Set to the test mode. (See page 20.)
2. Push the  SOURCE  button.
3. Push the  MODE  button and set to AM (US,Canadian model) or
MW (E model).
Display
4. Push the preset  3  button.
Display
5. Adjust with the volume RV1 on TU11 so that the “AM” (US,
Canadian model) or “MW” (E model) indication turns to “AM0”
(US, Canadian model) or “MW0” (E model) indication on the
display window. But, in case of already indicated “AM0” (US,
Canadian model) or “MW0” (E model), turn the RV1 so that put
out light “0” indication and adjustment.
Display
*1 : E model has the “MW” displayed.
Adjustment Location : See page 22.
SHUF1
*
1
SHUF1
*
1
SHUF1
*
1
– 22 –
Adjustment Location : tuner unit (TU11)
–set upper view–
TU11
RV1 AM (MW) AUTO SCAN/STOP LEVEL ADJ
RV4 FM STEREO SEPARATION ADJ
TAPE SPEED
ADJ
RV261
(R-CH)
RV251
(L-CH)
DOLBY
LEVEL
ADJ
–set bottom view–
R-CH
L-CH
RV2 FM AUTO SCAN/STOP LEVEL ADJ
RV3 FM NOISE FOCUS ADJ (E MODEL)
TP (DOLBY)
DOLBY
LEVEL
ADJ
– 23 –
SECTION 6
DIAGRAMS
6-1. IC PIN DESCRIPTION
• IC501 µPD78058GC-488-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
ILL.IN
I
Illuminator line detection input
2
ST
I/O
Used inconjunction with STEREO input/MONO output. (FM mode)
3
SD IN
I
Station detector detection input
4
AVSS
GND for A/D conversion.
5
LCDANG
O
Output for LCD view angle adjustment.
6
PLL CE
O
PLL serial chip enable output
7
AVREF
Reference voltage for D/A conversion.
8
PLL SI
I
PLL serial data input
9
PLL SO
O
PLL serial data output
10
PLL CKO
O
PLL serial clock output
11
COLSEL
I
Illuminator color initial setting
12
LCDSO
O
LCD serial data output
13
LCDCKO
O
LCD serial clock output
14
LCDCE
O
LCD serial chip enable output
15
LCDINH
O
LCD blank display control output
16
UNISI
I
Serial data input
17
UNISO
O
Serial data output
18
UNICKI
I
Serial clock input
19
UNICKO
O
Serial clock output
20
BUSON
O
BUS ON control output
21
SYSRST
O
System reset control output
22
AMPON
O
Power amplifier power control output
23
TU ON
O
TUNER power control output
24
FM ON
O
FM power control output
25
PW ON
O
System power control output
26
ILLON
O
Illumination power control output
27
COLOR
I/O
Illuminator color select control input/output
28
AMSON
O
TAPE AMS control output
29
REL
I
Rotation detection input of reel table.
30
MTLIN
I
Auto METAL detection input
31, 32
POS3, 2
I
Position signal detection input
33
GND
GND of microcomputer.
34, 35
POS0, 1
I
Position signal detection input
36
LM LOD
O
Loading motor control output (Loading direction)
37
LM EJ
O
Loading motor control output (Eject direction)
38
N ROUT
O
Forward/Reverse detection output
39
MTLON
O
METAL control output
40
CM ON
O
Capstan motor control output
41
TAPON
O
TAPE power control output
42
PW SEL
I
Power select initial setting
43
RC IN1
I
Rotary commander input 1
44
TEST
I
TEST mode setting input
45
EQSEL
I
Equalizer select input
46
BEEP
O
Buzzer control output
47
MUTE
O
System mute control output
48
VOLCE
O
Electric volume serial chip enable output
– 24 –
Pin No.
Pin Name
I/O
Pin Description
49
VOLCKO
O
Electric volume serial clock output
50
VOLSO
O
Electric volume serial data output
51
TAPMUT
O
Tape mute control output
52, 53
RE IN0, 1
I
Rotary encoder input 0, 1
54
DOLON
I/O
DOLBY control input/output
55
DOLBC
I/O
DOLBY B/C select control input/output
56
AMSIN
I
Music with/without detection input in AMS.
57
DIMMER
I/O
Dimmer control input/output
58
AD ON
O
Power control output for A/D conversion.
59
RAMBU
I
RAM reset detection input
60
RESET
I
Reset input
61
SIRCS
I
Remote commander input
62
BU IN
I
Back-up power detection input
63
DOORSW
I
Door open/close switch
64
ACCIN
I
Accessory power detection input
65
NOSESW
I
Detachable panel detection
66
TELMUT
I
Telephone mute detection input
67
KEYACK
I
Key input acknowledge
68
VDD
Power supply for microcomputer.
69
X OUT
O
Main ceramic oscillator output pin (5 MHz)
70
X IN
I
Main ceramic oscillator input pin (5 MHz)
71
GND
GND for microcomputer.
72
XT OUT
O
Sub crystal oscillator output pin (32.768 kHz)
73
XT IN
I
Sub crystal oscillator input pin (32.768 kHz)
74
AVDD
Power supply for A/D conversion.
75
AVREF
Reference power supply for A/D conversion.
76, 77
KEYIN0, 1
I
Key input 0, 1
78
VSM
I
FM/AM common signal meter A/D conversion input
79
DSTSEL
I
Destination initial setting A/D conversion input
80
RC IN0
I
Rotary commander input 0
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