Sony HCD-GTR888 Service Manual ▷ View online
1
This manual is about circuit operation of HCD-GTR888
MHC-GTR888 is the system name of HCD-GTR888
MHC-GTR888 is the system name of HCD-GTR888
Page
Internal Use Only
HCD-GTR888(MHC-GTR888)
Circuit Operation
1
Agenda
2
Page
2
1. Construction p. 3
2. Switching regulator section. p. 4
3. Main section.
2. Switching regulator section. p. 4
3. Main section.
p. 9
4. Display section. p.12
5. CD Mechanism section. p.14
6. BU/RF/Servo section. p.16
7. Class D Amplifier section. p.19
8. Tuner section. p. 27
9. USB section. p. 29
10. Trouble shooting p. 31
5. CD Mechanism section. p.14
6. BU/RF/Servo section. p.16
7. Class D Amplifier section. p.19
8. Tuner section. p. 27
9. USB section. p. 29
10. Trouble shooting p. 31
3
This is a schematic block diagram of HCD-GTR888
1. The Switching Regulator section supplies power to each block.
2. The System Control section controls the whole circuit.
3. The Display section controls the display of FL indicator tube .
4. The CDM section controls CD changer mecha.
5. The BU section plays CD disc.
6. The RF/Servo section processes signal from the BU section.
7. The Class DAMP section amplifies audio signal from the
1. The Switching Regulator section supplies power to each block.
2. The System Control section controls the whole circuit.
3. The Display section controls the display of FL indicator tube .
4. The CDM section controls CD changer mecha.
5. The BU section plays CD disc.
6. The RF/Servo section processes signal from the BU section.
7. The Class DAMP section amplifies audio signal from the
operational amplifier block and output it.
8. The Tuner section controls the Tuner.
9. The USB section controls the USB device.
9. The USB section controls the USB device.
10. The MIC section controls the signal from MIC.
Page
1. Construction
3
1.Switching
Regulator
section.
2. Main section.
(System control)
10.MIC
section.
7.ClassDAMP
section.
3.Display
section.
8.Tuner
section.
9.USB
section.
6.RF/Servo
section.
5.BU
section.
4.CDM
section.
4
Following are descriptions of the Switching regulator section.
Page