Sony CMT-EP30 / CMT-EP40 / HCD-EP30 / HCD-EP40 Service Manual ▷ View online
4
HCD-EP30/EP40
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 break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down 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 break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down 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 emis-
sion, observe from more than 30 cm away from the objective lens.
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
1. Press the
I/1
button to the power ON with no disc inserted
and press the
[CD]
button.
2. Open the lid for CD.
3. Turn on SW600 as following figure.
4. Confirm the laser diode emission while observing the object-
3. Turn on SW600 as following figure.
4. Confirm the laser diode emission while observing the object-
ing lens. When there is no emission, Auto Power Control cir-
cuit or Optical Pick-up is broken.
Objective lens moves up and down five times for the focus
search.
cuit or Optical Pick-up is broken.
Objective lens moves up and down five times for the focus
search.
SECTION 1
SERVICING NOTES
• MODEL IDENTIFICATION
– Bottom View –
– Bottom View –
MODEL
PART No.
EP30: AEP and UK models
4-235-167-0
[]
US and Canadian models
4-235-169-0
[]
Singapore model
4-235-170-0
[]
Australian model
4-235-171-0
[]
Taiwan model
4-235-172-0
[]
Mexican model
4-235-173-0
[]
Argentina model
4-235-174-0
[]
EP40: AEP and UK models
4-235-175-0
[]
Saudi Arabia model
4-236-316-0
[]
TO PREVENT ‘TAPE OSCILLATION SOUND AT VOLUME’
MAXIMUM SETTING (W/O TAPE)
MAXIMUM SETTING (W/O TAPE)
Headphone wire dressing:
a.) Draw the wire from Main board to Headphone Jack board along
a.) Draw the wire from Main board to Headphone Jack board along
the bottom side of heatsink.
b.) The wire must be kept away from the top side of Cassette board
at least 30 mm.
SW600
PART No.
CASSETTE board
MAIN board
HEADPHONE
board
board
at least 30 mm
heatsink
5
HCD-EP30/EP40
SECTION 2
GENERAL
This section is extracted from
instruction manual.
instruction manual.
LOCATION OF CONTROLS
– Front Panel –
– Front Panel –
Cassette compartment qd (12)
CD 4 (8, 9, 13, 15)
Display Window 5 (9, 18)
ENTER/PGM w; (7, 8, 9, 10, 12,
CD 4 (8, 9, 13, 15)
Display Window 5 (9, 18)
ENTER/PGM w; (7, 8, 9, 10, 12,
15)
ISS 0 (13)
MEGA BASS 8 (14)
MONO STEREO 0 (11)
MUSIC MENU 9 (14)
PHONES jack ws
PRESET +/— qs (10, 11)
RDS (CMT-EP40 only) wg (11,
MEGA BASS 8 (14)
MONO STEREO 0 (11)
MUSIC MENU 9 (14)
PHONES jack ws
PRESET +/— qs (10, 11)
RDS (CMT-EP40 only) wg (11,
12)
REMAIN 4 (9)
Remote sensor wk
REPEAT wj (8)
SHUFFLE wa (8)
TAPE 3 (12)
TIMER indicator 2 (15)
TUNER 6 (10, 13, 15)
TUNER DSPL (CMT-EP40 only)
REPEAT wj (8)
SHUFFLE wa (8)
TAPE 3 (12)
TIMER indicator 2 (15)
TUNER 6 (10, 13, 15)
TUNER DSPL (CMT-EP40 only)
wh (11)
TUNER MEM w; (10)
TUNING + wd (10, 11)
TUNING — wf (10, 11)
VOLUME control qa (15)
TUNING + wd (10, 11)
TUNING — wf (10, 11)
VOLUME control qa (15)
1
2
3 4 5 6
7
q;
9
8
qa
qs
w;
wa
ws
wd
wf
wg
wh
wj
wk
qd
qf
qj qh
ql qk
qg
BUTTON DESCRIPTIONS
@/1 (power) 1 (6, 10)
CD
. m (go back) wf (8, 9)
M > (go forward) wd (8, 9)
u (play/pause) wg (8, 9)
Z PUSH OPEN/CLOSE 7 (8)
x (stop) wh (8, 9)
. m (go back) wf (8, 9)
M > (go forward) wd (8, 9)
u (play/pause) wg (8, 9)
Z PUSH OPEN/CLOSE 7 (8)
x (stop) wh (8, 9)
TAPE
M (fast forward) qh (12)
X (pause) qf (12, 13)
N (play) qk (12, 15)
z (recording) ql (13)
m (rewind) qj (12)
xZ (stop/eject) qg (12, 13)
M (fast forward) qh (12)
X (pause) qf (12, 13)
N (play) qk (12, 15)
z (recording) ql (13)
m (rewind) qj (12)
xZ (stop/eject) qg (12, 13)
6
HCD-EP30/EP40
CD/REMAIN 3 (8, 9, 13, 15)
CLOCK/TIMER/SLEEP SET qf
CLOCK/TIMER/SLEEP SET qf
(7, 15)
MEGA BASS 2 (14)
MUSIC MENU w; (14)
PRESET +/— qj (10, 11)
RDS (CMT-EP40 only) qh (11,
MUSIC MENU w; (14)
PRESET +/— qj (10, 11)
RDS (CMT-EP40 only) qh (11,
12)
REPEAT qs (8)
SHUFFLE 7 (8)
TAPE ql (12)
TIMER ON/OFF qd (15)
TUNER/BAND 5 (10, 13, 15)
TUNER DSPL (CMT-EP40 only)
SHUFFLE 7 (8)
TAPE ql (12)
TIMER ON/OFF qd (15)
TUNER/BAND 5 (10, 13, 15)
TUNER DSPL (CMT-EP40 only)
qg (11)
TUNER MEM/ENTER/PGM 6
(7, 8, 9, 10, 11, 15)
TUNING/CLOCK/TIMER +/—
qk (7, 10, 11, 15)
VOLUME +/— 4 (15)
BUTTON DESCRIPTIONS
M (fast forward) > (go
forward) 0 (8, 9)
. (go back) m (rewind) qa
(8, 9)
u (play/pause) 8 (8, 9)
`/1 (power) 1 (6, 10)
x (stop) 9 (8, 9)
`/1 (power) 1 (6, 10)
x (stop) 9 (8, 9)
Remote Control
1 2 3 4
5
6
7
8
9
q;
qa
qs
qf
qd
qg
qh
qj
qk
ql
w;
Setting the time
1
Turn on the system.
2
Press CLOCK/TIMER/SLEEP SET on
the remote.
the remote.
The clock indication appears.
3
Press TUNING/CLOCK/TIMER + or — on
the remote repeatedly to set the time.
the remote repeatedly to set the time.
4
Press ENTER/PGM (TUNER MEM/
ENTER/PGM on the remote).
ENTER/PGM on the remote).
The clock starts working.
Tip
If you made a mistake, perform from step 2.
If you made a mistake, perform from step 2.
To change the preset time
Perform from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
HCD-EP30/EP40
7
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-4. CD CABINET SECTION
(Page 9)
3-2. FRONT PANEL SECTION
(Page 8)
3-6. TAPE MECHANISM DECK
(TCM125-2)
(Page 10)
(Page 10)
3-5. CD MECHANISM DECK
(CS-21SC-1280)
(Page 9)
(Page 9)
3-7. CASSETTE LID
(Page 10)
3-3. MAIN BOARD
(Page 8)
SET