Sony fh 7 service manual

Page 1

RTV servis Horvat
Keéinci, 31402 Semteci
031-856-139
031-856-637
V 098-788-319
rtv.servis.horvat@os.tel.hr
Croatia

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V. .L A. ._..._ .._. _,.,_.,.. m.

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AEP Model
UK Model
E Model

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Photo : AEP, UK model

a, COMPACT HI-DENSITY

Dolby Laboramries Licens'mg CorpovafionI Noise reduction
5» stem manu'actured under Hcense Ivom Dolby Laboratories COMPONENT SYSTEM

Licensmg Corporation,

FH-7

Handling Precautions of MOS le. . . .
SPECIFICATIONS ...........
MODEL IDENTIFICATIONS . . . .

SECTION 1 OUTLINE

FUNCTION OF CONTROLS. . .
CONNECTIONS ...........
OPERATION OF THE TUNER . . .
TAPE PLAYBACK .........
TAPE RECORDING ........
OTHER NOTES ...........

SECTION 2 DISASSEMBLY

REMOVAL ..............

SECTION 3
EXPLODED VIEWS &

PARTS LIST ...........
TROUBLE CHECKS ..........
CAPACITORS & RESISTORS. , . .

..20

CONTENTS
38.9.6 5691
ST-78L (AEP, UK model) ST-l-
3, 4 MELF Components ............. ST-2, 3
5, 6 SECTION 1
7 BLOCK DIAGRAM ........... ST-4, 5
SECTION 2 ADJUSTMENTS
8, 9 MW/LW SECTION ............ ST-7, 8
10, 11 FM SECTION 1 ............. ST-9, 10
12 FM SECTION 2 ............. ST-ll, 12
. .13 SECTION 3 DIAGRAMS
H14 3], MOUNTING DIAGRAM ..... ST-13,I4
. .15-17 3-2. SCHEMATIC DIAGRAM . . . .ST~15-17
Semiconductor
. .18 Lead Layouts ............. ST-IS
SECTION 4
EXPLODED VIEW AND
. .19 PARTS LIST ............. ST-l9-2]
I .21-24

, Continued on page 2 -

SAFETY RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY SHADING AND MARI;
(Q1 ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL 10
SAFE OPERATION RLPLACF THESE COMPONINTS

QNY

WITH SONY PARTS WHOS£ PART NUMBERS APPIAII
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS

PUBLISHED BY SONY.

Page 2

as
ST-7SS (E model) ST-I-

MELF Components ............ ST-Z, 3
SECTION 1

BLOCK DIAGRAM ........... ST-4, 5
SECTION 2 ADJUSTMENTS

MW/SW SECTION I .......... ST-7, 8

MW/SW SECTION 2 .......... ST-9

FM SECTION 1 ............ ST-10712

FM SECTION 2 ............. STI3, 14

SECTION 3 DIAG RAMS

3-1. MOUNTING DIAGRAM ..... ST-lS, 16

3-2. SCHEMATIC DIAGRAM . . . .ST<17rI9
Semiconductor
Lead Layouts ............. STZO
SECTION 4
EXPLODED VIEW AND
PARTS LIST ............. ST-21-23
TA-78 TA-l~
I. CIRCUIT DESCRIPTION ....... TA<2
2. BLOCK DIAGRAM ........... TA-3, 4
3. DISASSEMBLY ............. TA-547
4. MOUNTING DIAGRAM ........ TA-8-lO
5. SCHEMATIC DIAGRAM ....... TA-I [~13
SEMICONDUCTOR
LEAD LAYOUTS ............ TAvI4
6. EXPLODED VIEWS .......... TA-IS, 16
PARTS LIST ................. TA-l7, 18
TC-78 TC-li
SERVICING NOTE ............ TC-Z
To apply B+ voltage in repaix ....... TC-2
SECTION 1
CIRCUIT DESCRIPTION ........ TC-3-14
l-l. C-MOS MECHANISM
CONTROLLER
TC93ION-001 (IC401) ..... TC-3, 4
1-2. AMS CIRCUIT .......... TC 1-3. ICSSS and QSSS ......... TC-13
1-4. Q410 and Q41] ......... TC-l4
1-5. Q4I6 ................ TC-l4
SECTION 2
OPERATION DESCRIPTION ..... TC-lSvSZ
2»1. Kicking function for FWD
cam gear, FF cam gear
when current is flowing
through solenoid iiiiiiiii TC-lS
2-2. FAST-REVERSE MODE . . ,TC-l6-I8
2-3. FF MODE ............. TC-l9-22
2-4. FWD MODE ........... TC-23-26
2-5. REC/FWD MODE ........ T028730
2-6. REV MODE ........... TC-31-36
2-7. FWD AMS MODE ....... T037742
2-8. REV AMS MODE ....... TC-43-48
2~9. FWD PAUSE MODE ..... TC-49752

--2-

SECTION 3 OUTLINE ......... TC-s4--56
3-1. BLOCK DIAGRAM ...... TC-s4-ss
SECTION 4 DISASSEMBLY ..... TC-s7-61
SECTION 5 ADJUSTMENTS ..... TC-62v7l
5-1. MECHANICAL
ADJUSTMENTS ......... TC-62-66
5-2. ELECTRICAL
ADJUSTMENTS ......... TC~67-7I
SECTION 6 DIAGRAMS ........ TC~72~81
61. MOUNTING DIAGRAM . . .TC~72774
5-2. SCHEMATIC DIAGRAM, . .TC-75-80
SEMICONDUCTOR LEAD
LAYOUTS ................. TC-SI
SECTION 7
EXPLODED VIEWS AND
PARTS LIST ............... TC-82-95 . 3
7-1. EXPLODED VIEwS ...... TC-_82-86 /
7-2. PARTS LIST ........... TC-87-9S
AC-7S AC-lv
CIRCUIT DESCRIPTION ......... A02, 3
SECTIONI
BLOCK DIAGRAM ........... AC-4
SECTION 2
DISASSEMBLY ............. AC-S
SEMICONDUCTOR
LEAD LAYOUTS .......... AC-6
SECTION3 DIAGRAMS
3-1, MOUNTING DIAGRAM ..... AC»7, 8
3-2. SCHEMATIC DIAGRAM. . . .AC-9, 10
SECTION4
EXPLODED VIEw AND
PARTS LIST ............. AC-l l, 12
\
SS-78 SS-I- .
FEATURES .................. SS?
1. DISASSEMBLY ............. SS«2
2. SCHEMATIC DIAGRAM ....... SS3
3. WIRING DIAGRAM . -. ........ 85-3
4. PARTS LIST ............... 53-3
5. EXPLODED VIEW ........... SS4