Sony CFD-E77L Service Manual ▷ View online
11
CFD-E77L
3-9.
TAPE MECHANISM DECK
(MF-V5-117)
(MF-V5-117)
1
four screws
(BVTP3
(BVTP3
×
10)
2
tape mechanism deck
(MF-V5-117)
(MF-V5-117)
3-8.
CABINET FRONT ASSY
2
wire (flat type) (14 core)
(CNP323)
(CNP323)
7
two screws
(BVTP3
(BVTP3
×
10)
6
screw
(BTP2.6
(BTP2.6
×
8)
4
Push the knob (stop/eject).
5
3
connector
(CNP321)
(CNP321)
8
cabinet front assy
1
FFC cable 27P
(CNP801)
(CNP801)
12
CFD-E77L
3-11. LID CASSETTE ASSY, LCD BOARD
1
two screws
(BTP2.6
(BTP2.6
×
8)
2
two claws
3
lid cassette assy
4
LCD board
3-10. CD LID
1
screw
(BTP2.6
(BTP2.6
×
8)
2
damper
driver
CD lid
4
CD lid
3
boss
13
CFD-E77L
3-13. CONNECTOR SETTING
MAIN board
TUNER board
CNP1
CNP321
CN322
CNP802
CNP801
CN303
TC board
CN321
CNP322
Note: When connecting leads, set it as shown in the figure.
3-12. HEAD (HRP301), MOTOR ASSY (M301), BELT
6
two screws
(B2.6
(B2.6
×
5)
7
motor assy (M301)
8
belt
5
head (HRP301)
1
screw
(BVTT2
(BVTT2
×
6)
3
Remove
four solders.
four solders.
4
TC board
2
14
CFD-E77L
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
TAPE SPEED ADJUSTMENT
Setting:
Function: TAPE
Function: TAPE
Procedure:
1. Playback WS-48A (tape center) in the FWD state.
2. Adjsut the volume in CAPSTAN/REEL motor (M301) so that
1. Playback WS-48A (tape center) in the FWD state.
2. Adjsut the volume in CAPSTAN/REEL motor (M301) so that
the frequency counter reading becomes 3,000 Hz.
Specified Value: 2,930 to 3,030 Hz
3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,940 to 3,060 Hz.
Adjustment Location:
PRECAUTION
1. Setting
MEGA BASS control : OFF
TAPE DECK SECTION
0 dB=0.775 V
Test tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
+
–
–
set
Test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
frequency counter
3.2
Ω
POWER board
CNP392 pin
CNP392 pin
2
POWER board
CNP392 pin
CNP392 pin
1
Tape speed
Adjustment
Adjustment
CAPSTAN/REEL motor
(M301)
(M301)
– TAPE deck block –
Mode
Tension Meter
Meter Reading
FWD
CQ-403A
more than 100 g
(more than 3.53 oz)
• Tape Tension Measurement
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head
pinch roller
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head magnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
• Torque Measurement
Mode
Torque Meter
Meter Reading
2.95 – 6.86 mN•m
FWD
CQ-102C
(30 – 70 g•cm)
(0.42 – 0.97 oz•inch)
0.15 – 5.39 mN•m
FWD
CQ-102C
(1.5 – 5.5 g•cm)
Back Tension
(0.021 – 0.076 oz•inch)
more than 5.89 mN•m
FF
CQ-201B
(more than 60 g•cm)
(more than 0.83 oz•inch)
more than 5.89 mN•m
REW
CQ-201B
(more than 60 g•cm)
(more than 0.83 oz•inch)
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