3
D-F200/F201
L3
AM
FERRITE-
ROD
ANTENNA
L1
CD DOOR
OPEN
13
24
12
1
TP5
TP1
TP18
TP813
TP311
TP816
TP20
P75
D1
D2
C7
FB311 FB111
C10
16
R28
C2
C37
C41
C3
C46
C15
C254
C154
C319
R102
R202
R354
C350
C351
C30
C841
C300
R26
R6
R2
R9
R16
R3
C313
Q8
C13
R18
R254
R19
IC302
R841
R24
R154
Q7
R17
C359
R7
D3
C36
C34
R843
FR
MODEL
R317
C29
R27
C354
D304
C301
S810
L4
CF1
S801
S811
S801
– MAIN BOARD (SIDE B) –
TP416
Q53
C43
R72
R70
L312
CT3
C9
C8
C39
C204
C104
C318
C361
C353
R8
C352
C201
R353
TAP802
C360
R25
R101
R316
R201
D301
TAP802
– MAIN BOARD (SIDE A) –
SECTION 1
SERVICE NOTE
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.
Fig. 2
Fig. 1
detection lever
detection lever
main board
S801
