Block Diagram - Panel, Power Amp Section - Sony HCD-GT22 Service Manual

HCD-GT22/GT44/GT55
7-4. BLOCK DIAGRAM – PANEL, POWER AMP Section –
FLUORESCENT INDICATOR
TUBE DRIVER
IC701
SI 49
SCK 48
DR35 [S0] –
CSb 51
FL701
DR16 [S19]
RSTb 52
FLUORESCENT
INDICATOR
GRID DRIVE DR0 [T0] –
TUBE XTb 46
Q701 – 714 DR13 [T13]
OSC
XT
45
D601 – 606 LED DRIVE
(STREAM) Q601 – 606
D607 D608 D609
LED DRIVE
GUITAR VOCAL BASS Q921 – 923
(GT44/GT55)
D612
LED DRIVE
SUBWOOFER Q607
D611
STANDBY
KEY0
S601 – 608 (KEY0),
S611 – 616 (KEY1), KEY0 – KEY4 KEY0 – KEY3
S621 – 628 (KEY2),
S631 – 638 (KEY3),
S641 – 649 (KEY4)
KEY4
S608 (GT44/GT55),
S641 – 649 (GT55)
(GT55)
S651
ROTARY
MASTER
ENCODER
VOLUME
S652
ROTARY
OPERATION
ENCODER
DIAL
REMOTE CONTROL
RECEIVER
IC601
X902
20MHz
X901
32.768kHz
HCD-GT22/GT44/GT55
SYSTEM CONTROLLER
IC901 (4/4)
84 O-NJM3427A-DATA
86 O-NJM3427A2-CLK
68 O-NJM3427FA2-CS
69 O-NJM3427FA2-RESET
O-S-LED1 –
RELAY B+
O-S-LED6
O-FRONT-SP-RELAY 3
O-G-LED, M+9V
O-V-LED,
M+7V
O-B-LED
AUDIO+9V
76 O-SWR-LED UNREG +16V
BD+3.3V
77 O-STBY-LED
D+1.5V
O-CD-POWER 4
83 I-WAKEUPKEY
USB+3.3V
I-KEY0 –I-KEY3
O-USB-POWER 8
+3.3V
56 I-KEY4
VBUS+5V
I-USB-MONI 52
66 I-VOL
65 I-JOG
EVER +10V
VDD+3.3V
81 I-SIRCS-IN
D+3.3V,
VREF+3.3V
RESET SWITCH
RESET 90
Q903 – 905
RESET SIGNAL
I-AC-CUT 35 GENERATOR
95 X1
IC902
94 X2
I-PROTECTOR 57
92 XT1
O-POWER-RELAY 5
91 XT2
FOR
FLUORESCENT
INDICATOR
TUBE
AMP
SECTION
B+
(GT22/GT55)
(GT44)
AMP
SECTION
B+
B+ SWITCH
Q041, 042
+9V
REGULATOR
IC021
D301, 302
D009
+9V
REGULATOR
IC011
+1.5V
B+ SWITCH
REGULATOR
Q301, 302
IC201
B+ SWITCH
Q303, 304
+3.3V
REGULATOR
IC006
+5V
REGULATOR
IC007
D008
D902
+4V
REGULATOR
Q901, 902
D007
PROTECT
DETECT
Q011
LEVEL SHIFT
Q908
26 26
PT901
MAIN POWER
TRANSFORMER
VF
VF
D908
–27V
–VFL REGULATOR
Q902
F908
+VH RECT
F909
D401
–VH
F904
+VL RECT
F905
D402
–VL
F909
+VCC
RECT
F904
D401
–VCC
RECT
D021 – 024
• Abbreviation
F907
AR : Argentina model
RECT
D011 – 014 AUS : Australian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E13 : 220V - 230V AC Area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
GT22: MX, AR, AUS/
F906
RECT GT44: MX, AR, AUS/
D001 GT55: MX, AR
GT22: E2, E3, E13, E51/
GT44: E2, E3, E13, E51/
GT55: E2, E51
VOLTAGE
SELECTOR
D006
S901
GT22: MX, AR, AUS/
GT44: MX, AR, AUS/
GT55: MX, AR
RECT
D902 – 905
PT902
SUB POWER
TRANSFORMER POWER ON/OFF
RELAY DRIVE
RECT
D910
RY901
(AC IN)
Q903
PROTECT
F (Page 25)