Sony TCM-900DV Service Manual ▷ View online
2
TCM-900DV
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270
• Keep the temperature of the soldering iron around 270
°C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
TABLE OF CONTENTS
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
Specifications ........................................................................... 1
1. GENERAL
Location of Parts and Controls .......................................... 2
2. DISASSEMBLY
2-1. Cabinet (Rear), Cassette Lid ASSY ............................ 3
2-2. Main Board ................................................................. 4
2-3. Mechanism Deck ........................................................ 4
2-4. Belt (AR), M601 (Capstan/reel motor),
HRPE901 (REC/PB/ERASE head) ........................... 5
2-5. SW Board ................................................................... 5
2-2. Main Board ................................................................. 4
2-3. Mechanism Deck ........................................................ 4
2-4. Belt (AR), M601 (Capstan/reel motor),
HRPE901 (REC/PB/ERASE head) ........................... 5
2-5. SW Board ................................................................... 5
3. ADJUSTMENTS
3-1. Mechanical Adjustments ............................................. 6
3-2. Electrical Adjustments ................................................ 6
3-2. Electrical Adjustments ................................................ 6
4. DIAGRAMS
4-1. Block Diagrams -Main Section (1/2) - ....................... 9
4-2. Block Diagrams -Main Section (2/2) - ..................... 10
4-3. Schematic Diagram - Main Section (1/3) - ................ 11
4-4. Schematic Diagram - Main Section (2/3) - ............... 12
4-5. Schematic Diagram - Main Section (3/3) - ............... 13
4-6.Printed Wiring Boards -Main Section (side A)- ........ 14
4-7.Printed Wiring Boards -Main Section (side B)- ........ 15
4-8.Printed Wiring Boards -SW Section (side A)- ........... 16
4-9.Printed Wiring Boards -SW Section (side B)- .......... 17
4-10.Schematic Diagram - SW Section - ......................... 18
4-11.Explanation of IC Terminals .................................... 19
4-2. Block Diagrams -Main Section (2/2) - ..................... 10
4-3. Schematic Diagram - Main Section (1/3) - ................ 11
4-4. Schematic Diagram - Main Section (2/3) - ............... 12
4-5. Schematic Diagram - Main Section (3/3) - ............... 13
4-6.Printed Wiring Boards -Main Section (side A)- ........ 14
4-7.Printed Wiring Boards -Main Section (side B)- ........ 15
4-8.Printed Wiring Boards -SW Section (side A)- ........... 16
4-9.Printed Wiring Boards -SW Section (side B)- .......... 17
4-10.Schematic Diagram - SW Section - ......................... 18
4-11.Explanation of IC Terminals .................................... 19
5. EXPLODED VIEWS
5-1. Main Board, Cabinet (Rear) section ......................... 22
5-2. Cassette Lid Section ................................................. 23
5-3. Mechanism deck Section -1(MT-900-175) ............... 24
5-4. Mechanism deck Section -2 (MT-900-175) .............. 25
5-2. Cassette Lid Section ................................................. 23
5-3. Mechanism deck Section -1(MT-900-175) ............... 24
5-4. Mechanism deck Section -2 (MT-900-175) .............. 25
6. ELECTRICAL PARTS LIST ................................ 26
Location of parts and controls
3
TCM-900DV
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
• The equipment can be removed using the following procedure.
Cassette lid assy
Cabinet (front)
SW board
Main board
Belt (AR), M601 (Capstan/reel motor),
HRPE901 (REC/PB/ERASE head)
HRPE901 (REC/PB/ERASE head)
Set
Mechanism deck
Cabinet (Rear)
2-1. CABINET (REAR), CASSETTE LID ASSY
Cassette lid assy
Note on installing the
cassette lid assy
Install the cassette lid assy with
the spring(toggle) as shown in
the figure so that it fits into the
holes on the cassette lid assy.
cassette lid assy
Install the cassette lid assy with
the spring(toggle) as shown in
the figure so that it fits into the
holes on the cassette lid assy.
7
Slide the projection
of "lever ASSY, FWD
return" fully in the
arrow direction and
remove it.
return" fully in the
arrow direction and
remove it.
8
Spring (toggle)
1
Screws (+B1.7X 9)
2
Screws (+B1.7X 9)
5
Open
Lever ASSY, FWD return
6
SW flexible board (Main board:CN901)
Hand strap
Cabinet (Rear)
3
Claws
4
9
Cabinet (front)
Cassette lid ASSY
SW flexible board
Note on installing the SW flexible board
Insert the SW flexible board as shown
in the figure.
Insert the SW flexible board as shown
in the figure.
4
TCM-900DV
2-2. MAIN BOARD
2-3. MECHANISM DECK
5
Screws (M1.4)
6
Black
Main board
Orange
White
Red
2
Flexible board
( from HPR901/HE901)
1
Remove soldering
four lead wires (from M601)
4
Spring, ground
3
Screw
Cabinet (front)
1
Screws ( IB LOCK )
Mechanism deck
( MT-900-175)
( MT-900-175)
Cabinet (front)
2
5
TCM-900DV
6
Washer
5
Washer (stopper N)
9
Screws (M1.4)
0
HRPE901
(REC/PB/ERASE head)
6
Washer
5
Washer (stopper N)
3
M601 (Capstan/reel motor)
2
Screws (M1.4)
4
Pulley (reverse)
8
Washer
8
Washer
7
Fly ASSY,Capstan
7
Fly ASSY,Capstan
1
Belt (AR)
Attaching belt (AR)
z
2-5. SW BOARD
2-4. BELT (AR), M601 (CAPSTAN/REEL MOTOR),
HRPE901 (REC/PB/ERASE head)
HRPE901 (REC/PB/ERASE head)
Cover, cassette lid
SW board
Lever assy, FWD return
Cassette lid assy
1
Screws (+B1.7X 3)
Lead Wires (from SP901)
Lead wires ( from MIC901)
4
Remove solder ( two places)
3
Remove solder ( two places)
5
Flexible board
( from LCD901)
6
2