Sony TC-TX77 / TC-TX770 Service Manual ▷ View online
MICROFILM
TC-TX77
STEREO CASSETTE DECK
SERVICE MANUAL
AEP Model
UK Model
Model Name Using Similar Mechanism
TC-S1
Tape Transport Mechanism Type
TCM-9700HLD
SPECIFICATIONS
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol
a
are trademarks
of Dolby Laboratories Licensing Corporation.
– 2 –
TABLE OF CONTENTS
1.
GENERAL
................................................................... 3
2.
DISASSEMBLY
.......................................................... 4
3.
MECHANICAL ADJUSTMENTS
....................... 7
4.
ELECTRICAL ADJUSTMENTS
......................... 7
5.
DIAGRAMS
5-1.
IC Pin Function Description ............................................ 11
5-2.
Printed Wiring Boards ..................................................... 13
5-3.
Schematic Diagram ......................................................... 17
6.
EXPLODED VIEWS
................................................ 23
7.
ELECTRICAL PARTS LIST
................................ 28
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 PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
– 3 –
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
– 4 –
SECTION 2
DISASSEMBLY
•
This set can be disassembled in the order shown below.
2
Note:
Follow the disassembly procedure in the numerical order given.
COVER, FRONT PANEL SECTION
AUDIO/CONNECTOR BOARD, POWER TRANSFORMER (T901)
(Page 5)
(Page 5)
TRAY (A) ASS’Y
(Page 6)
(Page 6)
COVER, FRONT PANEL SECTION
(Page 4)
(Page 4)
MECHANISM DECK (TCM-9700HLD)
(page 5)
(page 5)
MOTOR (HK) ASS’Y (M902)
(Page 6)
(Page 6)
1
two screws
(CASE 3 TP2)
(CASE 3 TP2)
3
wire (flat type) (5 core)
(CN301)
(CN301)
4
two screws
(BVTP3
(BVTP3
×
8)
1
two screws
(CASE 3 TP2)
(CASE 3 TP2)
8
LID (R-TC)
7
two claws
3
wire (flat type)
(27 core) (CN802)
(27 core) (CN802)
6
front panel section
5
three claws
4
two screws
(BVTP3
(BVTP3
×
8)
2
Remove the cover to
direction of the arrow.
direction of the arrow.
