Sony Scd-1 Service Manual

SERVICE MANUAL
For Technical service
US Model
Canadian Model
AEP Model
SCD-1/ 777ES
3. SERVICING  NOTES............................................... 3
4. DISASSEMBLY-2..................................................... 5
5. TEST  MODE.............................................................. 10
6. ELECTRICAL  ADJUSTMENTS......................... 12
7. DIAGRAMS
7-1. Notes for Printed Wiring Board and
Schematic Diagram ......................................................... 17
7-2. Printed Wiring...

2
Notes on chip component replacement
¥ Never reuse a disconnected chip component.
¥ Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
¥ Keep the temperature of the soldering iron around 270 ûC dur-
ing 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.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT
Ë  LA  SƒCURITƒ!...

3
SECTION  3
SERVICING  NOTES
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this...

4
REPLACING  OPTICAL  PICK-UP
Handling
1) A red laser diode for Super Audio CD Player requires more
attention to static electricity than general infrared laser diodes
for CD.
Because its durability to static electricity is far weaker than
that of infrared laser diodes, always use an earth band when
handling the optical pick-up block as service parts.
2) As for the flexible board KHS-180A (RP) packed as service
parts, the short lands have been soldered to protect from static
electricity. Accordingly,...

5
OP  MECHANISM  SECTION  (BU-23)
MAIN  BOARD
Note: Follow the disassembly procedure in the numerical order given.
SECTION  4
DISASSEMBLY-2
2five screws
(PS 3 ´ 5)
1two connectors
(CN701, 708)
1five connectors
(CN702-706)
3MAIN board
OPTICAL PICK-UP
(KHS-180A/J1N) (Page 7)
RF BOARD (Page 7)
2lag
1screw (PS3 ´ 5)
4two washers4two washers
3two screws
(B2.6 ´ 5)3two screws
(B2.6 ´ 5)
5Lift up OP mechanism section (BU-23).
6two wires (flat type) (26 core)
(CN501, 502) 

6
4six screws
(RK4 ´ 8)
3push (control block) (wire) switch2two claws
2two claws
1two connectors
(CN452, 702)
4six screws(RK4 ´ 8)5side plate (L)6four screws
(BVTP3 ´ 10)
8front panel section
7screw (BVTT3 ´ 6)
5side plate (R)
7screw (BVTT3 ´ 6)
FRONT  PANEL  SECTION  (SCD-1)
FRONT  PANEL  SECTION  (SCD-777ES)
4six screws
(RK4 ´ 8)
3push (control block) (wire) switch2two claws
2two claws
1two connectors
(CN452, 702)
4six screws
(RK4 ´ 8)5side plate (R)
6five screws
(BVTP3 ´ 10)
8front panel section
7two...

7
OPTICAL  PICK-UP  (KHS-180A/J1N)
RF  BOARD
1OP-15 flexible print board
(CN003)
5bracket (OP) assy
4holder (R)
3holder (R2)
2screw
(PSW3 ´ 10)
6two screws (B3 ´ 5)
7retainer (OP) assy
8leaf spring (Y)
9optical pick-up
(KHS-180A/J1N)
1OP-15 flexible print board
(CN003)
5RF board
4four spacers (3 ´ 5)
3four screws
(B3 ´ 10)
2connector
(CN005)
2two connectors
(CN004, 006)
1wire (flat type) (14 core)(CN007) 

8
SLED  MOTOR  ASSY  SECTION
TILT  MOTOR  ASSY  (M3)
1five screws
(B3 ´ 5)
2cover (BU)
3three poly-slider washers
4gear (D)
5gear (C)
6gear (B)
8SLD-MOT board
7screw
(B3 ´ 5)9three screws
(B3 ´ 5)
0sled motor assy section
2bracket (tilt) assy4tilt motor assy (M3)
3two precision screws
(P2 ´ 2.5)1two screws
(B3 ´ 5) 

9
SPINDLE  MOTOR  BLOCK
APPLYING  OIL  AT  REPLACEMENT   OF  MOTOR  (SPINDLE) (M7)
7sled shaft (main)
6sled shaft (sub)
4two shaft retainers (main)
3two shaft retainers (sub)
5spindle motor block2screw
(B3 ´ 5)
2screw
(B3 ´ 5)
2two screws
(B3 ´ 5)
1slide the spindle motor block  
toward the arrow.
sled shaft (main)
sled shaft (sub)
When replacing the motor (spindle) (M7), apply a drop of oil to the
sled shaft (sub) and the sled shaft (main) respectively.
Notes:
¥ Do not attach oil to other than specified...

10
SECTION  5
TEST  MODE
5-1. FLUORESCENT INDICATOR TUBE MODENote: Set the CD1/CD2 switch on the remote commander to CD1.
Procedure:
1. Press the 
! button while shorting the BP (TEST MODE) on
the DISPLAY board with tweezers, etc. and turn on the power,
so that the following operation will be executed automatically.
(1) All segments from 1G to 19G light up in order, starting from
1G.
(2) Vertical one line (total 7) of all grids from 1G to 15G lights up
in order, starting from the left.
(3) Horizontal one...