Service Note - Sony D-F200 Service Manual
Fm/am portable cd player
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Also See for D-F200:
- Operating instructions manual (24 pages) ,
- Specification sheet (2 pages)
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NOTES ON HANDLING THE OPTICAL PICK-UP 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.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
Before Replacing the Optical Pick-Up Block
Please be sure to check throughly the parameters as par the "Opti-
cal Pick-Up Block Checking Procedures" (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output : IC601 yg pin
When checking FOK, remove the lead wire to disc motor.
• RF signal P-to-P value : 0.45 ± 0.1 Vp-p
• The repairing grating holder is impossible.
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S801. (push switch type)
The following two checking methods for the laser diode are
operable.
• Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S801 with a screwdriver having a
thin tip as shown in Fig.1.
or TAP802 is shorted as shown in Fig.2.
Note: Do not push the detection lever strongly, or it may be bent
or damaged.
3. Press the N X button.
4. Observing the objective lens, check that the laser diode emits
light.
When the laser diode does not emit light, automatic power
control circuit or optical pick-up is faulty.
In this operation, the objective lens will move up and down 5
times along with inward motion for the focus search.
SECTION 1
SERVICE NOTE
– MAIN BOARD (SIDE B) –
TP18
TP5
CF1
C2
D1
16
R2
R3
C3
C37
C41
R6
D2
R24
C46
TP20
L4
C13
C15
C10
R9
P75
– MAIN BOARD (SIDE A) –
D-F200/F201
detection lever
detection lever
S801
main board
TP311
Q7
Q8
TP1
R17
FR
R843
MODEL
L1
S801
CD DOOR
OPEN
TP816
L3
AM
FERRITE-
ROD
ANTENNA
C359
TP813
D3
S810
S801
Fig. 1
C361
C204
R201
C360
TAP802
TAP802
Fig. 2
FB311 FB111
C29
R27
R28
C30
C300
C313
S811
C39
R25
C43
R8
TP416
D301
3
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