DOWNLOAD Sony PMC-222V Service Manual ↓ Size: 13.65 MB | Pages: 55 in PDF or view online for FREE

Model
PMC-222V
Pages
55
Size
13.65 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
pmc-222v.pdf
Date

Sony PMC-222V Service Manual ▷ View online

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SECTION 2
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
2-1. FRONT CABINET ASSY
2-2. CD BLOCK ASSY
2-3. MECHANISM DECK BLOCK ASSY
2-4. CHUCKING PLATE
2-5. CD DOOR ASSY, CD BOARD, OPTICAL PICK-UP SECTION
2
 two screws
    (BVTP 3 
×
 10)
2
 four screws
    (BVTP 3 
×
 10)
2
 two screws
    (BVTP 3 
×
 10)
4
 four screws
    (K 3 
×
 10)
!™
 three screws
    (KTP 3 
×
 10)
6
 four screws
    (K 3 
×
 10)
6
 screws
    (WH 3 
×
 8)
7
 side panel (L)
3
 rear cabinet
5
 side panel (R)
9
 connector
     (CNP302)
8
 connector
     (J003)
4
 connector
     (CNP1004)
7
 Video jack board
9
 parallel wire (FFC)
    (23 core) (CNP310)
8
 parallel wire (FFC)
    (15 core) (P1001)
 connector
     (CNP312)
 two claws
 front cabinet
    assy
1
 EQ knob
 connector
     (CNP304)
!∞
 connector
     (CNP704)
5
 screws
    (BVTP 3 
×
 10)
Note:
4 – 7 ; Video jack board removal.
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SECTION 3
MECHANICAL ADJUSTMENTS
1. The sdjustments should be perfomed in the order given in the
service manual. (As a general rule. Playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
2. The adjustments should be performed for both L-ch and R-ch
unless otherwise indicated.
Standard output level
Test tape
Tape Speed Adjustment
Procedure :
Mode : Playback
Adjustment Value :  normal tape speed
Frequency difference between the beginning and the end of the tape
should be within 1% (30Hz).
Adjustment Location :
Test Tape
WS-48A
P-4-A063
Used for
Tape speed adjustment
Head azimuth  adjustment.
Signal
3kHz, 0dB
6.3kHz, –10dB
PRECAUTION
1.
Clean the following parts with a denatured-alchool-moistened
swab:
record/playback head
pinch roller
erase head
rubber belts
capstans
2. Demagnetize the record/playback head with a head
demagnetizer. (Do not bring the head demagnetizer close to the
erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Torque Measurement
Tape Tension  Measurement
Meter Reading
30 – 80g
cm
(0.42 – 1.12 oz
inch)
1.5 – 5.5g
cm
(0.021 – 0.07 oz
inch)
50 – 130g
cm
(0.77 – 1.80 oz
inch)
50 – 130g
cm
(0.77 – 1.80 oz
inch)
Mode
FWD
FWD
back tension
Fast Forward
Rewind
Torque Meter
CQ-102C
CQ-201B
1dB = 0.775V
Digital frequency counter
2,970 – 3,030Hz
Speed checker
–1.0 to 1.0%
TAPE RECODER SECTION
HP OUT
32 
0.25 V (–10dB)
Output Pin
Load impedance
Output signal level
SP OUT
0.775 V (0dB)
32 
test tape
WS-48A
(3kHz, 0dB)
set
digital frequency
counter
J303 (phones)
+
Torque Meter
CQ-403A
Meter Reading
more than 100g
(more than 3.53 oz)
MODE
FWD
SECTION 4
ELECTRICAL ADJUSTMENTS
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