Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks
of Dolby Laboratories Licensing Corporation.
AEP Model
UK Model
E Model
Model Name Using Similar MechanismTC-PX100
Tape Transport Mechanism TypeTCM-ACLM572
SPECIFICATIONS
MICROFILM
STEREO CASSETTE DECK
Page 2
TABLE OF CONTENTS
1. GENERAL ·········································································· 3
2. DISASSEMBLY
2-1. Case, Front Panel································································ 4
2-2. Mechanism Deck (TCM-ACLM572)································· 5
2-3. Control Board, Dolby Board ·············································· 5
2-4. Power Trans Board, AC Select SW Board, Power Board··· 6
2-5. Tray Assembly···································································· 6
2-6. Mechanism Chassis Block·················································· 7
2-7. Capstan Reel Motor (M902)··············································· 7
7. ELECTRICAL PARTS LIST······································· 38
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
— 2 —
Page 3
SECTION 1
GENERAL
This section is extracted
from instruction manual.
— 3 —
Page 4
SECTION 2
e
DISASSEMBLY
Note :Follow the disassembly procedure in the numerical order given.
2-1.CASE, FRONT PANEL
4
Case
2
Two screws,
case stopper
3
Screw (+B 2.6 × 8)
1
Two screws,
case stopper
8
Front panel
7
Two screws
(+B 2.6
6
Loading panel
Connector
M901
×
8)
Rear sid
Pin-1
Pin-6
CN05
Connector
— 4 —
5
Slide the tray.
(Remove the connector from M901, supply the 6 V
power from an external regulated power supply to
pin-5 and pin-6 of CN05.)
Regulated DC
power supply
+
–
Pin-5
Pin-6
CN05
‘
’
1
6
Page 5
2-2.MECHANISM DECK (TCM-ACLM572)
r
4
Connector
5
Mechanism deck (TCM-ACLM572)
2
Connecto
3
Connector
2-3.CONTROL BOARD, DOLBY BOARD
3
Two screws
2
Two screws
(+B 2.6
1
Two connectors
×
8)
(+B 2.6
×
8)
1
Four screws
(+B 3
4
CONTROL board
×
10)
Clamper
Harness
Harness
Precaution for assembling :
Fix the harness with the clamper.
7
DOLBY board
— 5 —
5
Connector
6
Four screws
(+B 2.6
×
8)
Page 6
2-4.POWER TRANS BOARD, AC SELECT SW BOARD, POWER BOARD
)
3
POWER TRANS board
5
Screw (+B2.6 × 8)
8
POWER
board
1
Connector
6
Screw (+B2.6 × 8)
2
Two screws
(+PWH3
×
6)
4
Two screws
(+B3
×
10)
2-5.TRAY ASSEMBLY
5
Tray assembly
Note : Be careful not to drop
the stainless ball (5 DIA)
when removing the tray assembly.
1
Screw (1.7 × 8.2)
7
Suport
4
Arm (576)
— 6 —
3
Boss
Stainless ball (5 DIA)
2
Spring (B
Page 7
2-6. MECHANISM CHASSIS BLOCK
s
3
Mechanism chassi
1
Four screws (+P 3 × 6)
2-7. CAPSTAN REEL MOTOR (M902)
3
Claws (4 claws)
2
Screw (+P 3 × 8)
8
Capstan reel motor (M902)
7
Hook the belt.
6
Three screws for motor
1
Remove soldering of
the plunger solenoid
Plunger
solenoid
4
CONTROL board
2
Screw (stepped)
5
Remove soldering of
the motor lead wire.
— 7 —— 8
Page 8
SECTION 3
d
DIAGRAMS
3-1. CIRCUIT BOARDS LOCA TION
REAR PANEL board
CONNECTION board
MODE CONTROL board
CONTROL board
FRONT board
POWER TRANS board
POWER boar
DOLBY board
O/C SW board
VR board
— 8 —
Page 9
TC-SD1
3-2. SCHEMATIC DIAGRAM — DISPLAY SECTION —
— 9 —— 10 —
Note on Schematic Diagram:
• All resistors are in Ω and 1/
specified.
• C : panel designation.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
4
W or less unless otherwise
Page 10
3-3. PRINTED WIRING BOARD — DISPLAY SECTION —
TC-SD1
COMPONENT SIDECONDUCTOR SIDE
• Refer to page 8 for Circuit Boards Location.
• Refer to page 24 for MODE CONTROL board Schematic Diagram.
Note on Printed Wiring Board:
• Y : parts extracted from the conductor side.
• b : Pattern of the rear side.
— 15 —— 14 —— 13 —— 12 —— 11 —
Page 11
TC-SD1
3-4. PRINTED WIRING BOARD — MAIN SECTION —
COMPONENT SIDECONDUCTOR SIDE
• Refer to page 8 for Circuit Boards Location.
Note on Printed Wiring Board:
• Y : parts extracted from the conductor side.
• b : Pattern of the rear side.
— 16 —— 17 —— 18 —— 19 —— 20 —
Page 12
TC-SD1
3-5. SCHEMATIC DIAGRAM — MAIN SECTION —
• Refer to page 25 for IC Block Diagrams. • Refer to page 27 for IC Pin Function Description. • Refer to page 15 for MODE CONTROL board Printed Wiring Board.
P ANEL-LED
LEBEL1-LED
LEVEL2-LED
LEVEL3-LED
LEVEL4-LED
LEVEL5-LED
T APE-LED
CDSYNC-LED
REC-LED
P AUSE-LED
REW-LED
FF-LED
REV -LED
FWD-LED
I/O
O
Playback mute selector output
O
Dolby ON/OFF output
O
Dolby B/C output
O
No used
O
Power ON LED (green) output
O
Panel LED (blue) output
O
Level meter 1 (minimum dB) LED (green) output
O
Level meter 2 LED (green) output
O
Level meter 3 LED (green) output
O
Level meter 4 LED (red) output
O
Level meter 5 (maximum dB) LED (red) output
O
Tape indicator LED (amber) output
O
CD synchro LED (red) output
O
REC LED (red) output
O
PAUSE LED (orange) output
O
REW LED (amber) output
O
FF LED (amber) output
O
REV LED (green) output
O
FWD LED (green) output
Description
— 28 —
Page 17
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback headspinch rollers
erase headrubber belts
capstanidlers
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
• Torque Measurement
Mode
FWD
FWD
back tension
REV
REV
back tension
FF/REW
• Tape Tension
FWD tension
REV tension
Torque meter
CQ-102C
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
31 to 61 g • cm
2 to 6 g • cm
36 to 61 g • cm
2 to 6 g • cm
61 to 143 g • cm
100 g or more
100 g or more
Precaution
1. Perform adjusting on the test mode.
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjust.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
6. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
7. The adjustments should be performed for both L-CH and RCH.
8. Switches should be set as follows.
DOLBY NR..................................................................... OFF
DIRECTION ....................................................................A
• Standard Recording Position
Adjust the REC LEVEL (VR02) control so that the standard input/
output signal level is obtained in the following connection.
— Record Mode —
audio oscillator
level meter
10k
600
Ω
Ω
LINE IN
attenuator
Standard Input Level
Input terminalLINE IN
source impedance10kΩ
input signal level0.5V (–3.8dB)
Standard Output Level
Output terminalLINE OUT
load impedance47kW
output signal level0.5V (–3.8dB)
0dB = 0.775 V
Test Mode
Turn OFF the main power and insert the shorting plug to the test
point CN13 (2P) on the CONTROL board (setting IC05 pin 22 to
“L”). Then turn ON the main power which activ ate the TEST mode.
All displays flash once.
If a recording is performed in the TEST mode, the REC MEMOR Y
mode becomes active at the moment of recording so that the tape is
rewound by the amount of recording when a tape is rewound after
recording.
After adjustment, be sure to remove the shorting plug from the test
point CN13 (2P).
Note: • Perform this adjustment after the head is turned around.
(If the head is positioned in the FWD direction, turn around
the head and start adjustment from the REV mode as
described below.)
* When the azimuth adjustment is performed, the azimuth
adjustment screw must end up with rotation of tightening
direction (i.e. clockwise direction).
Adjustment procedure :
1. Mode: REV playback
test tape
P-4-A100
(10kHz, –10dB)
47k
set
LINE OUT
level mete
Ω
4. Enter the FWD mode and perform steps 1 to 3.
5. Check that the phase difference between L-CH and R-CH is in
the range of in-phase to 90°.
6. After adjustment, lock the screw with locking compound.
Oscilloscope Lissajous waveform
in phase45
°
90
°
135
°
GoodWrong
180
°
Adjustment Location:
2. Turn the azimuth adjustment screw for the maximum output
level of L-CH and R-CH.
If the peak levels do not match for L-CH and R-CH, turn the
adjustment screw until both of output levels match together
within 1 dB of peak.
L-CH peak
screw position
output
level
R-CH peak
within
1dB
L-CH peak
R-CH peak
within 1d
angle of
adjustmen
screw
3. Phase Check
Mode: REV playback
Adjustment screw (FWD side)Adjustment screw (REV side
Tape Speed Adjustment
Procedure :
Mode : FWD playback
test tape
WS-48B (3kHz, 0dB)
47k
set
L- or R-CH of LINE OUT
frequency counte
Ω
1. Enter the FWD playback mode, and play back test tape.
2. Adjust the adjustment control (variable resistor) of the motor
(M902) until the frequency counter reading becomes 3,000 Hz
± 90 Hz.
3. Confirm that the tape speed deviation between tape top and tape
end is within 3%.
Adjustment location :
test tape
P-4-A100
(10kHz, –10dB)
R-CH
set
L-CH
47k
Ω
47k
Ω
LINE OUT
oscilloscope
VH
— 30 —
M902
adjustment control
(variable resistor)
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
Page 19
Playback Level Adjustment
e
r
Procedure :
1. Mode : FWD playback
test tape
P-4-L300
(315Hz, 0dB)
set
LINE OUT
level meter
Record Level Adjustment
Setting :
• The REC LEVEL control must be positioned at the standard record
level position. (Refer to page 29.)
Procedure :
1. Record
AF OSC
attenuator
600
set
Ω
blank tape
CS-123
Adjust SFR01 (L-CH) and SFR02 (R-CH) so that the reading on
level meter meets the adjustment limits below.
Adjustment Limits :
LINE OUT level : -7.7 ± 0.5 dB (301.5 to 338.5 mV)
Level difference between channels : within 0.5 dB
Check that the LINE OUT level does not change even if Playback
and Stop operations are repeated several times.
Adjustment Location : DOLBY board (Refer to page 32.)
Record BIAS Adjustment
Setting :
• The REC LEVEL control must be positioned at the standard record
level position. (Refer to page 29.)
Procedure :
1. Mode: Record
AF OSC
attenuator
Ω
600
LINE IN
1) 315Hz
2) 10kHz
set
50mV (– 23.8dB)
blank tap
CS-123
LINE IN
315Hz, 50mV (–23.8dB)
2. Playback
recorded portion
set
LINE OUT
level meter
3. Reproduce the portion of tape which is recorded in step 1.
Confirm that the playback level stays within the specified range
of the Adjustment Level.
4. If the playback level is outside the specified range, adjust the
SFR11 (L-CH) and SFR12 (R-CH), and repeat steps 1 to 3 until
the specified range is satisfied.
Adjustment Level : -23.8 dB ± 0.5 dB (47.3 to 53.1 mV)
Adjustment Location : DOLBY board (Refer to page 32.)
2. Playback
recorded portion
set
LINE OUT
level mete
3. Reproduce the portion of tape which is recorded in step 1.
Confirm that the playback level stays within the specified range
of the Adjustment Level.
4. If the playback level is outside the specified range, adjust the
SFR03 (L-CH) and SFR04 (R-CH), and repeat steps 1 to 3 until
the specified range is satisfied.
Adjustment Level : Difference of the playback level between
10 kHz and 315 Hz : 0 dB ± 0.5 dB when 315 Hz is the reference.
Adjustment Location : DOLBY board (Refer to page 32.)
— 31 —
Page 20
Adjustment Location:
DOLBY board (Component Side)
SFR12
SFR11
SFR03
SFR04
SFR01
IC02
SFR02
IC03
CONTROL board (Component Side)
IC01
CN13
IC05
— 32 —
Page 21
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
SECTION 6
EXPLODED VIEWS
• The mechanical parts with no reference number
in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
• Abbreviations
HK: Hong Kong
SP: Singapore
The components identified by mark ! or
dotted line with mark ! are critical for safety .
Replace only with part number specified.
1513-017-294-01 SCREW (S), SPECIAL
1533-017-273-01 LEVER (AC), SPRING
1543-017-270-01 AC, LEVER
1553-017-279-01 SCREW (M2), SPECIAL
1563-017-274-01 HEAD, SPRING BASE
1613-017-300-01 WASHER, FLAT
1623-017-255-01 PINCH ROLLER (R)
1633-017-296-01 CUSHION (MOTOR)
1643-017-297-01 SCREW (MOTOR)
1653-017-280-01 SCREW (M2 TAPPING), SPECIAL
1573-017-254-01 PINCH ROLLER (F)
1583-017-253-01 CHASSIS (HEAD)
1593-017-277-01 PINCH (F), SPRING
1603-017-278-01 PINCH (R), SPRING
1663-017-285-01 BELT (MAIN)
* 1671-672-011-11 MODE CONTROL BOARD
R861-249-417-11 CARBON1K5%1/4W F
R871-249-413-11 CARBON4705%1/4W F
R881-247-855-11 CARBON10K5%1/4W
R891-247-855-11 CARBON10K5%1/4W
R901-249-417-11 CARBON1K5%1/4W F
R911-249-417-11 CARBON1K5%1/4W F
R961-247-855-11 CARBON10K5%1/4W
R971-249-417-11 CARBON1K5%1/4W F
R981-247-855-11 CARBON10K5%1/4W
R991-249-417-11 CARBON1K5%1/4W F
R1051-249-427-11 CARBON6.8K5%1/4W F
R1071-249-398-11 CARBON275%1/4W F
R1091-247-867-11 CARBON33K5%1/4W
R1101-247-807-11 CARBON1005%1/4W
R1111-247-879-11 CARBON100K5%1/4W
R1121-249-430-11 CARBON12K5%1/4W
R1131-249-440-11 CARBON82K5%1/4W
R1141-249-417-11 CARBON1K5%1/4W F
R1161-249-427-11 CARBON6.8K5%1/4W F
R1171-249-412-11 CARBON3905%1/4W F
R20A1-247-855-11 CARBON10K5%1/4W
R2001-249-412-11 CARBON3905%1/4W F
R2011-249-412-11 CARBON3905%1/4W F
R2021-249-412-11 CARBON3905%1/4W F
R2031-249-412-11 CARBON3905%1/4W F
R2041-249-409-11 CARBON2205%1/4W F
R2051-249-409-11 CARBON2205%1/4W F
R2061-249-412-11 CARBON3905%1/4W F
R2071-249-412-11 CARBON3905%1/4W F
R2081-249-412-11 CARBON3905%1/4W F
R2091-249-412-11 CARBON3905%1/4W F
R2101-249-412-11 CARBON3905%1/4W F
R2111-249-412-11 CARBON3905%1/4W F
R2121-249-412-11 CARBON3905%1/4W F
R2141-249-412-11 CARBON3905%1/4W F
R0161-249-409-11 CARBON2205%1/4W F
R19A1-249-390-11 CARBON5.65%1/4W F
R40A1-247-847-11 CARBON4.7K5%1/4W
R4001-247-903-00 CARBON1M5%1/4W
R4011-249-417-11 CARBON1K5%1/4W F
R4021-249-424-11 CARBON3.9K5%1/4W F
R4031-247-855-11 CARBON10K5%1/4W
R41A1-247-847-11 CARBON4.7K5%1/4W
R44A1-247-862-11 CARBON20K5%1/4W
R45A1-249-389-11 CARBON4.75%1/4W F
R46A1-249-389-11 CARBON4.75%1/4W F
R57A1-247-871-11 CARBON47K5%1/4W
LED18-719-072-76 LED SEL5E23C-TP15 (REV)
LED28-719-072-76 LED SEL5E23C-TP15 (PLA Y)
LED38-719-072-76 LED SEL5E23C-TP15 (PAUSE)
LED48-719-072-76 LED SEL5E23C-TP15 (STOP)
LED58-719-304-83 LED SEL2410G (-10)
LED68-719-304-83 LED SEL2410G (-5)
LED78-719-304-83 LED SEL2410G (0)
LED88-719-812-41 LED TLR124 (+3)
LED98-719-812-41 LED TLR124 (+6)
LED108-719-058-04 LED SEL5223S-TP15 (CD SYNC)
LED118-719-058-04 LED SEL5223S-TP15 (REC)
LED128-719-300-97 LED SEL2710K (PAUSE)
LED138-719-311-60 LED SEL2810D-C (REW)
LED148-719-311-60 LED SEL2810D-C (FF)
LED158-719-304-83 LED SEL2410G (REV)
LED168-719-304-83 LED SEL2410G (PLAY)
LED178-719-304-83 LED SEL2410G (∞)
LED188-719-812-41 LED TLR124 (TAPE)