Sony CDX-GT730UI / CDX-GT737UI / CDX-GT780UI Service Manual ▷ View online
CDX-GT730UI/GT737UI/GT780UI
17
3-7. CHASSIS (OP) ASSY
3-8. CHUCKING ARM SUB ASSY
two coil springs (damper) (natural)
coil spring (damper) (green)
chassis (OP) assy
tension spring (KF)
gear (LE1)
lever (D)
slider (R)
chucking arm sub assy
spring
Note: Have this portion receive the chassis.
Note: Have this portion receive the chassis.
Note: Be careful not to touch the turn table.
CDX-GT730UI/GT737UI/GT780UI
18
3-9. SLED MOTOR ASSY
sled motor assy
sled motor assy
spring
spring
stand
stand
turn table
three serration screws
(M
2
× 3)
three serration screws
(M 2
(M 2
× 3)
Note: Place the stand with care not to touch the turn table.
Note:
Never remove these parts since they were adjusted.
Never remove these parts since they were adjusted.
Note for Assembly
Note: Take care to prevent the chassis from being bent
when tightening the three machine screws.
bearing (R)
bearing (F)
CDX-GT730UI/GT737UI/GT780UI
19
3-10. OPTICAL PICK-UP SECTION
3-11. OPTICAL PICK-UP
optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
tapping screw
(P
1.4)
leaf spring (OPS)
rack
optical pick-up
lead screw assy
CDX-GT730UI/GT737UI/GT780UI
20
SECTION 4
DIAGRAMS
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• no mark : FM
( ) : AM or MW
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
( ) : AM or MW
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J :
J :
CD
F :
FM
f
: AM or MW
L :
AUX
c :
USB
g :
BUS
AUDIO
• Abbreviation
EA
EA
: Saudi Arabia model
MX
: Mexican model
IT
: Italian model
RU
: Russian model
For schematic diagrams:
Note:
Note:
• All capacitors are in
μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• f
: internal component.
• C : panel designation.
For Printed Wiring Boards:
Note:
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• a :
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• a :
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in
each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in
each block.)
• Abbreviation
EA
EA
: Saudi Arabia model
MX
: Mexican model
IT
: Italian model
RU
: Russian model
• Waveforms
– MAIN Board –
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
0.05 Vp-p
4 MHz
2.8 Vp-p
32.768 kHz
0.05 V/DIV, 50 nsec/DIV
1 V/DIV, 20 μsec/DIV
IC1
RI (XTAL1)
IC501
RB (X_IN)
3.6 Vp-p
7.92 MHz
1 V/DIV, 50 nsec/DIV
IC501
PB (OSC_IN)
1.2 Vp-p
8.664 MHz
0.5 V/DIV, 50 nsec/DIV
IC50
(XTI)
(AEP,UK,IT,RU model)
– KEY Board –
1.4 Vp-p
8 MHz
0.5 V/DIV, 50 nsec/DIV
IC901
RB (XOUT)
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