Block Diagram - Main Section - Sony ICF-CD555TV Service Manual

ICF-CD555TV
6-4. BLOCK DIAGRAM – MAIN Section –
CD LCH
A
(Page 21)
CD LIN
5
INPUT
TU LCH
R LIN SEL L
(Page 22) C 7 SELECT 4
TV LIN
SWITCH
9
TV LCH
F
(Page 23)
INPUT SELECT SWITCH,
ELECTRICAL VOLUME,
SURROUND/TONE CONTROL
R-CH : R-ch is omitted due to same as L-ch.
SIGNAL PATH
: FM
: TV
: CD PLAY
PLL DATA, PLL CLK,
PLL CE, COUNT
PLL DATA
D
(Page 22) 65 RADIO DATA
PLL CLK
66 RADIO CLK
PLL CE
64 RADIO CE
COUNT
63 COUNT
SDATA
33 TV DATA SO
SCK
34 TV DATA SCK
LATCH
SDATA, SCK,
35 TV DATA SI
LATCH, RESET
RESET
(Page 23) E 36 RESET
SEG0 – SEG21
10 – 31
LIQUID CRYSTAL DISPLAY
LCD651
V LIN L OUT
VOLUME SURROUND TONE
1 17
CONTROL CONTROL CONTROL
LOGIC
IC302
14 13 21 20
AGC
Q202
R-CH
68 67
SYSTEM CONTROLLER
IC401 (2/2)
COM0 – COM3
6 – 9
REMOTE CONTROL SIRCS
RECEIVER BUFFER 48 RC
IC651 Q401
S618 – 620
43 KEY3
S612 – 617
44 KEY2
S606 – 611
45 KEY1
S601 – 605
46 KEY0
S651
40 ENCODER+
ROTARY
ENCODER 41 ENCODER–
75 74
X401
4.19MHz
POWER AMP
L IN
LINE AMP
12
Q101
NF L
13
MUTING
Q103
R-CH
MUTING CONTROL
SWITCH
Q304
D203 D102
+ +
R-CH
A MUTE 77
BUZZER 52 R-CH
POWER ON 59
D653
LED DRIVE
TIMER LED 80
Q651 TIMER
+5V
RESET SIGNAL
D651, 652
RESET 76 GENERATOR
(LCD BACK LIGHT)
IC402
D401
µ-COM +3.3V
D402
+3.3V
D1401,
1402
TV ON +3.9V
TV µ-COM +3.3V
SWITCH REGULATOR
Q403, 404 IC903
TV POWER ON 32
CD ON +3.3V
CD +3.3V SWITCH REGULATOR
Q301 Q954
CD ON 79
+6V RADIO ON
RADIO/VT SWITCH
B+ Q302
RADIO ON 78
D303
+5.4V
MOTOR DRIVER
B+
CD +6V
AC IN 49
+3.3V +5V
VDD3.3V REGULATOR REGULATOR
IC1903 IC1901
71 70
VEE5V
D1953,
1954
X402 +7.5V
32.768kHz
+9V
T1801
INBERTER
TRANSFORMER
BACK LIGHT
UNIT
Q1805, 1806
24 24
IC301
L OUT
SP101
3
(L-CH)
POWER
AMP
SP201
R-CH
(R-CH)
8
STANDBY
SWITCH
Q305
+12V
POWER AMP
B+
+5V –13V
B– SWITCH
REGULATOR VSS–13V REGULATOR
Q1909, 1910
Q951, 952, 955 Q1902
+17V
B+ SWITCH
VGH17V REGULATOR
Q1911, 1912
Q1902
TV ON +5V
TV +5V SWITCH REGULATOR
Q501, 505 IC902
+6V
REGULATOR
Q956 – 958
AC IN DETECT
Q901
B+ SWITCH REGULATOR
Q1905, 1906 Q1903
TV ON +9V
SWITCH REGULATOR
Q959, 960 IC901
REGULATOR B+ SWITCH
Q1803, 1804 Q1801, 1802
OSC
POWER ON/OFF
MONITOR ON
CONTROL SWITCH G
(Page 23)
Q1913
T901
POWER
TRANSFORMER
RECT
D912 – 918
RECT
D903 – 906
(AC IN)
RECT
D901, 902
RECT
D908 – 911
ANT
B
(Page 22)
TFT-ON
H
(Page 23)