Sony CFD-G70L Service Manual ▷ View online
3
CFD-G70L
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static breakdown because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled
with care.
static breakdown because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled
with care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode
emission, observe more than 30 cm away from the objective
lens.
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode
emission, observe more than 30 cm away from the objective
lens.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig : X-4918-255-1
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig : X-4918-255-1
SECTION 1
SERVICING NOTES
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S801) as following figure.
4. Confirm the laser diode emission while observing the
CHECK
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S801) as following figure.
4. Confirm the laser diode emission while observing the
objecting lens. When there is no emission, Auto Power
Control circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus
search.
Control circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus
search.
Insert a precision
screw driver and push
SWITCH (S801)
screw driver and push
SWITCH (S801)
4
CFD-G70L
• Service Position
Note: For removal, a screwdriver with the long shaft 25cm or more is required.
Repair without removing Headphone board.
Cabinet (front) ASSY
Tuner board
Cabinet top ASSY
Main board
Cabinet (rear) ASSY
5
CFD-G70L
SECTION 2
GENERAL
LOCATION AND FUNCTION OF CONTROLS
This section is extracted from
instruction manual.
instruction manual.
1 Tape operation buttons
REC z
PLAY N
REW m
FF M
STOP/EJECT x/Z
PAUSE X
2 PRESET – button
3 PRESET + button
4 CD u button
5 CD x button
6 VOLUME –/+ button
7 Z PUSH OPEN/CLOSE
8 GAME/LINE button
9 GAME Xpand button
0 MODE button
qa SOUND button
qs RADIO BAND/AUTO PRESET button
qd POWER DRIVE WOOFER button
qf CD: AMS > button
Radio: TUNE + button
qg CD: AMS . button
Radio: TUNE – button
qh Remote sensor
qj Display window
qk GAME/LINE IN jack
ql i jack
w; OPR/BATT indicator
wa DISPLAY ENT/MEMORY button
ws OPERATE button
wd SLEEP button
0
8
9
qa
qh
qd
qj
qk
ql
qs
qf
qg
wd
w;
wa
ws
1
6
23 45
7
6
CFD-G70L
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (FRONT) ASSY, CABINET (REAR) ASSY
z
The equipment can be removed using the following procedure.
Set
Cabinet (front) ASSY
Cabinet (rear) ASSY
Cabinet top ASSY
LCD board
AC inlet board, Power board
BATT board,
BATT COM board
BATT COM board
Main board
Tuner board
CD board, TC board,
Optical pick-up block,
Mechanism deck
Optical pick-up block,
Mechanism deck
M321 (Capstan/Reel motor),
Belt, HRP301 Head, magnetic,
HE301 Head (Erase)
Belt, HRP301 Head, magnetic,
HE301 Head (Erase)
Optical pick-up (KSS-213C)
Control-1 board, Control-2 board
Headphone board
1
8
4
2
Screw
(+BVTP 3
×
20)
2
Screw
(+BVTP 3
×
20)
5
Screw
(+BVTP 3
×
10)
6
Flexible cable
(from Main board CNP805)
7
Connectors
(from Headphone board CN391, 394, 396)
3
Screws
(+BVTP 3
×
14)
3
Screws
(+BVTP 3
×
14)
3
Screws
(+BVTP 3
×
14)
Cabinet (rear) ASSY
Cabinet (front) ASSY
Lid, battery case