Technics ST HD 510 Service Manual

Page 2

ST-HDSW l STAHD3I l)

A: WARNING

This service iniorrnation is designed ior experienced repair technicians only and is not designed tor use by the general public.

it does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by elecbicity ShOU'd be serviced 0' repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with In this service inlorrnalion by anyone else could result in serious injury or death.

Page
1 Befoye Repair-"mum 2
2 Operating Instructlons 2
3 About the Self-Diagnostic Mode ,3
4 Power Source ONIOFF and Signal Check 4

5 Operation Checks and Component Replacement Procedures!)
5.1. Checking for the tuner P.C B. and FL P_C.B. 5
5.2. Checking ior the main P.C.B
6 Wiring Connection Diagram

7 Block Dlagram 7
8 Schematlc Diagram Notes ..................................................... 10

1 Before Repair

These equipments (ST-HD510/310). which are the
components of the system. are supplied with power from the
amplifiers (SE-HD510I310).When repairing these equipments
or checking operation of the systems be sure to connect the

2 Operating Instructions

Page

3-1- Schematic Diagram Notes 10
3.2. Type Illustration oi lCs Transistors and Diodes 10

9 Schematic Diagram .11

to Printed Circuit Board Diagram 18
t1 Terminal Function 0' [C's -22
11.1. |6302(M82433AFP): DIGITAL SOUND CONTROLLER->22
11,2. |C701(M30217MAA200): FL DRIVE/SYSTEM CONTROL

---23
12 Replacement Fans List
13 Cabinet Parts Location 27

amplifiers with it.

Power supply and operation check in the state at it as a single
equipmenei are impracticable.

@ Display panel
The display also shows inlormation ior the cassette deck, CD
player. and amplifier.

© Play tlmerlrecord timer button and Indicator
(6) PLAVI® FtEC)

@ Clock/timer, demo button
[CLOCKITIMER -DEMO)

63 Set button (SET)

(5) Tuning/time adlust buttons
(TUNEITIME ADJUST V, A)

Tuning made button (TUNE MODE)

0 FIDS button (HDS)
0 Band select button (FM/AM)

SC-HD310
® FM band select button (FM)
AM band select button (AM)

Page 10

ST DSOIS H0110

8 Schematic Diagram Notes

8.1.

Schematic Diagram Notes

- This schematic diagram may be modified at any time with development of new technology.

Notes:

~ 5601:
$601:

- $602:
5602:

- 5603:
- 5504:
_ 8605:
- 5605:
. $607:

- $608:

impedance) with

circuit
Nu mark: FM
( ): AM mode

For ST-HDS10: Band select (FM/AM) swuch.
For ST-HDS10: AM band select (AM) switch.

For ST-HD510: RDS (ROS) switch.

For ST-HDS10: FM band select (FM) switch.

Tuning mode (TUNE MODE) switch .
Tuning/time adjust ( /\ ) switch ,
Tuning/lime adiust ( V ) switch.

important safety notice:

Components identified by A mark have special
characteristics impotant for safety.

Furthermore. special parts which have purpose of fire-
retardant (resistors). high~quality sound (capacitors). low-
noise (resistors), etc. are used, When replacing any of
components, be sure to use only manutacture's specified
parts shown in the parts list.

Set (S ET) switch.

Clock/timer. demo (CLOCK/TIMER-DEMO)

switch.

Play timer/record timer( 9 PLAYlREC ® )

switch.

tester.
mode

the chassis

indicated voltage values are the standard values for the
unit measured by the DC electronic circuit tester (high-
taken as standard.
Therefore. there may exist some errors in the voltage
values. depending on the internal impedance of the DC

Caution!

~ It: and LS! are sensitive to static electricity.

~Secondary trouble can be prevented by taking care

during repair

- Cover the parts boxes made of plastics with aluminum

foil.
- Ground

the soldering iron.

directly.
Voltage and signal line
->- : Positive voltage line
L > ; FM signal line
-) : AM signal line
n).- : Negative voltage line

1:3":

: FM 080 signal line
: AM 08!: signal line

- Put a conductive mat on the work table.
-Do not touch the legs of IC or L3! with the fingers

8.2. Type Illustration of lC's Transistors and Diodes
M5218AFPE3 sew ,. 253i417PoTA DTB123YSTP
LA1833MN-TLM 24pm M62433AFP BOPIN 2802137POTA DTCt14ESTP
LC72131MDTLM 20pm M202E7MAA200 100PlN orcmaxsrp
1,..%\_ lLC72722PMTLM 24pm
. m
t» l
7 a v «i
zsmeieATx l ZSCSQAOAOSTA MA111TX warm
. 2802767LTA UN5214TX I 1 ssaaore- l 7
1 250331 1 ATA Cathode as
l . zscsaiiARSTA c / mum
I UN4111TA _, 6.. /?3
,/
LC UN4t15TA a Mada )y A
E
B A/ Anode
MAt BETA I MA165TA
ca MA4043MTA C
Cut ode ,3 c
/ ~
A MAAOBQLTA j/Sfi/ {3%
Anode A
we Anode
, i 7 l