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MICROFILM

S MECHANISM

G
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Photo : SLV-K877MN

— 2 —

! OR DOTTED LINE WITH

! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

1.

Check the area of your repair for unsoldered or poorly-soldered
connections.  Check the entire board surface for solder splashes
and bridges.

2.

Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.

3.

Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair.  Point
them out to the customer and recommend their replacement.

4.

Look for parts which, through functioning, show obvious signs
of deterioration.  Point them out to the customer and
recommend their replace-ment.

5.

Check the B+ voltage to see it is at the values specified.

6.

Flexible Circuit Board Repairing

• 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.

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

SPECIFICATIONS

TUNER

RF MOD. SYSTEM

RF MOD. FREQUENCY

G-CODE SYSTEM

DUAL MODE SHUTTLE

RCA FRONT LINE IN/OUT

REMOTE COMMANDER

SYSTEM 1

MPX 1

SYSTEM 2

MPX 2

SYSTEM 3

MPX 3

BG

MONO

DK

MONO

I

MONO

K/G/I

UHF21-69

—

—

IN

RMT-V216B

BG

BG

NICAM/ZWEITON ZWEITON

DK

MONO

—

—

K/G

UHF21-69

®
®

IN/OUT

RMT-V216D

—

—

—

—

—

—

K/G

UHF30-39

—

—

IN/OUT

RMT-V216

Board Name

DM-69

DM-70

HI-56

KR-33

KR-34

MA-306

MF-307

MJ-83

MJ-84

SR-26

SR-27

SW-294

SW-295

Model

Part No.

1-666-514-11

1-666-519-11

1-666-517-11

1-666-522-11

1-666-523-11

1-666-511-11

1-666-512-11

1-666-515-11

1-666-520-11

1-666-516-11

1-666-521-11

1-666-513-11

1-666-518-11

A-6791-327-A

A-6791-325-A

A-6791-323-A

A-6791-324-A

A-6791-334-A

A-6791-326-A

A-6791-333-A

A-6791-331-A

A-6791-318-A

A-6791-328-A

A-6791-330-A

A-6791-334-A

A-6791-329-A

A-6791-332-A

A-6791-321-A

A-6791-318-A

A-6791-317-A

A-6791-319-A

A-6791-322-A

A-6791-316-A

A-6791-320-A

— 3 —

1.

“S” MECHANISM  EMERGENCY MODE
INDICATION ····································································· 5

1-1.

Function ·············································································· 5

1-2.

Indication ············································································ 5

2.

EXTENSION CABLES FOR REPAIRING
KR-33/34 BOARD ····························································· 7

3.

HOW TO REPLACE A ROTARY UPPER DRUM ··········· 8

3-1.

HOW TO REMOVE A ROTARY UPPER DRUM ············ 8

3-2.

HOW TO ATTACH A NEW ROTARY
UPPER DRUM ··································································· 8

Getting Started

Unpacking ··············································································· 1-1
Setting up the remote commander ·········································· 1-1
Connecting the VCR ······························································· 1-1
Tuning your TV to the VCR ···················································· 1-2
Setting up the VCR with EASY SET UP ································ 1-2
Manual setup — Selecting a Language ·································· 1-3
Manual setup — Presetting channels ······································ 1-3
Manual setup — Setting up G-CODE
(SLV-K877MN/PS only) ························································· 1-4
Manual setup — Changing disabling programme positions
(SLV-K877MN/PS only) ························································· 1-5
Manual setup — Setting the clock ·········································· 1-6

Basic Operations

Playing a tape ·········································································· 1-6
Recording TV programmes ····················································· 1-7
Recording TV programmes using G-CODE
(SLV-K877MN/PS only) ························································· 1-8
Setting the timer manually ······················································ 1-9

Additional Operations

Playing/searching at various speeds ······································ 1-10
Recording TV programmes using the quick timer ················ 1-10
Checking/changing/cancelling timer settings ······················· 1-10
Recording stereo and bilingual programmes ························ 1-11
Karaoke sing-along ······························································· 1-11
Searching with the AMS or index function ··························· 1-14
Enjoying the surround sound (Virtual Sound) ······················ 1-14
Adjusting the picture ····························································· 1-15
Changing menu options ························································ 1-15

Editing

Connecting to a VCR or stereo system ································· 1-15
Basic editing ·········································································· 1-15
Audio dubbing ······································································ 1-16

Additional Information

Index to parts and controls ···················································· 1-16

2-1.

UPPER CASE, FRONT PANEL BLOCK ASSEMBLY · 2-1

2-2.

DM-69/70, HI-56, MF-307, SW-294/295 BOARDS ······ 2-1

2-3.

POWER BLOCK, REAR PANEL, BOTTOM PLATE ··· 2-2

2-4.

MECHANISM DECK, KR-33/34, SR-26/27 BOARDS 2-2

2-5.

INTERNAL VIEWS ························································ 2-3

2-6.

CIRCUIT BOARDS LOCATION ··································· 2-4

3-1.

OVERALL BLOCK DIAGRAM ···································· 3-1

3-2.

VIDEO BLOCK DIAGRAM ·········································· 3-4

3-3.

AUDIO BLOCK DIAGRAM ·········································· 3-7

3-4.

KARAOKE-1 BLOCK DIAGRAM ······························ 3-10

3-5.

KARAOKE-2 BLOCK DIAGRAM ······························ 3-13

3-6.

SERVO/SYSTEM CONTROL BLOCK DIAGRAM ··· 3-15

3-7.

MODE-1 BLOCK DIAGRAM ····································· 3-17

3-8.

MODE-2 BLOCK DIAGRAM ····································· 3-19

3-9.

TUNER BLOCK DIAGRAM ······································· 3-21

3-10. POWER SUPPLY BLOCK DIAGRAM ······················· 3-23

4-1.

SLV-K867/K877 FRAME SCHEMATIC DIAGRAM ···· 4-1

4-2.

SLV-KH7 FRAME SCHEMATIC DIAGRAM ··············· 4-3

4-3.

PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS ···································································· 4-6

• MA-306 (MAIN) PRINTED WIRING BOARD ········· 4-7
• MA-306 (REC/PB AMP)

SCHEMATIC DIAGRAM ····························· 4-11

• MA-306 (VIDEO, AUDIO)

SCHEMATIC DIAGRAM ····························· 4-16

• MA-306 (SERVO/SYSTEM CONTROL)

SCHEMATIC DIAGRAM ····························· 4-19

• MA-306 (I/O, TUNER) SCHEMATIC DIAGRAM ·· 4-23
• SR-26/27 (SURROUND)

PRINTED WIRING BOARDS ······················ 4-26

• MA-306 (SURROUND), SR-26/27 (SURROUND)

SCHEMATIC DIAGRAM ····························· 4-27

• MA-306 (POWER SUPPLY)

SCHEMATIC DIAGRAM ····························· 4-31

• KR-33 (KARAOKE) SCHEMATIC DIAGRAM ······ 4-32
• KR-33 (KARAOKE) PRINTED WIRING BOARD ·· 4-35
• KR-34 (KARAOKE) PRINTED WIRING BOARD ·· 4-37
• KR-34 (KARAOKE) SCHEMATIC DIAGRAM ······ 4-39
• MF-307 (MODE CONTROL)

PRINTED WIRING BOARD ························ 4-44

• MF-307 (MODE CONTROL)

SCHEMATIC DIAGRAM ····························· 4-47

• SW-294 (KARAOKE SWITCHES)

PRINTED WIRING BOARD ························ 4-49

• SW-294 (KARAOKE SWITCHES)

SCHEMATIC DIAGRAM ····························· 4-51

• HI-56 (MODE CONTROL)

PRINTED WIRING BOARD ························ 4-54

• HI-56 (MODE CONTROL)

SCHEMATIC DIAGRAM ····························· 4-57

• SW-295 (KARAOKE SWITCHES)

SCHEMATIC DIAGRAM ····························· 4-60

• SW-295 (KARAOKE SWITCHES)

PRINTED WIRING BOARDS ······················ 4-63

• DM-69/70 (OPERATION SWITCHES),

MJ-83/84 (MIC JACKS)

PRINTED WIRING BOARDS ······················ 4-66

• DM-69/70 (OPERATION SWITCHES),

MJ-83/84 (MIC JACKS)

SCHEMATIC DIAGRAM ····························· 4-69

• POWER BLOCK HS-828SF

(SWITCHING REGULATOR)

PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM ····························· 4-73

5-1.

SYSTEM CONTROL —
VIDEO BLOCK INTERFACE
(MA-306 BOARD IC161) ··············································· 5-1

5-2.

SYSTEM CONTROL —
SERVO PERIPHERAL CIRCUIT INTERFACE
(MA-306 BOARD IC161) ··············································· 5-1

5-3.

SYSTEM CONTROL —
MECHANISM INTERFACE
(MA-306 BOARD IC161) ··············································· 5-2

5-4.

SYSTEM CONTROL — SYSTEM CONTROL
PERIPHERAL CIRCUIT INTERFACE
(MA-306 BOARD IC161) ··············································· 5-2

5-5.

SYSTEM CONTROL —
Hi-Fi AUDIO BLOCK INTERFACE
(MA-306 BOARD IC161) ··············································· 5-2

— 4 —

5-6.

SERVO/SYSTEM CONTROL
MICROPROCESSOR PIN FUNCTION
(MA-306 BOARD IC161) ··············································· 5-3

5-7.

TIME/TUNER CONTROL
MICROPROCESSOR PIN FUNCTION
(HI-56 BOARD IC301) ··················································· 5-4

5-8.

SR CONTROL LINE SPECIFICATION ························ 5-5

6-1

MECHANICAL ADJUSTMENTS ································· 6-1

6-2.

ELECTRICAL ADJUSTMENTS ··································· 6-1

2-1.

PREPARATION BEFORE ADJUSTMENT ··················· 6-1

2-1-1. Equipment Required ························································ 6-1
2-1-2. Equipment Connection ···················································· 6-1
2-1-3. Input Signal Check ·························································· 6-1
2-1-4. Alignment Tape ······························································· 6-1
2-1-5. Input/Output Levels and Impedance ······························· 6-2
2-1-6. Adjustment Sequence ······················································ 6-2
2-2.

POWER SUPPLY CHECK ············································· 6-2

2-2-1. Output Voltage Check (MA-306 Board) ························· 6-2
2-3.

SERVO SYSTEM CHECK ············································· 6-3

2-3-1. RF Switching Position/

AF Switching Position Adjustments(MA-306 Board) ···· 6-3

2-4.

VIDEO SYSTEM CHECKS AND ADJUSTMENT ······· 6-4

2-4-1. X’tal OSC Check (MA-306 Board) ································· 6-4
2-4-2. SYNC AGC Check (MA-306 Board) ······························ 6-4
2-4-3. White Clip/Dark Clip Check (MA-306 Board) ··············· 6-4
2-4-4. Recording Y Level Check (MA-306 Board) ··················· 6-5
2-4-5. Recording Chroma Level Check(MA-306 Board) ·········· 6-5
2-4-6. Playback Level Check (MA-306 Board) ························· 6-5
2-4-7. VCO Frequency Adjustment (MA-306 Board) ··············· 6-5
2-5.

AUDIO SYSTEM ADJUSTMENT ································· 6-5

2-5-1. ACE Head Adjustment ···················································· 6-6
2-5-2. E-E Output Level Check ················································· 6-6
2-5-3. Overall Output Level and Distortion Factor Check ········· 6-6
2-5-4. Overall Noise Level Check ············································· 6-6
2-6.

ADJUSTING PARTS LOCATION DIAGRAM ············· 6-8

7-1.

EXPLODED VIEWS ······················································ 7-1

7-1-1. FRONT PANEL ASSEMBLY AND

UPPER CASE SECTION ··············································· 7-1

7-1-2. CHASSIS SECTION ······················································· 7-2
7-1-3. MECHANISM DECK-1 ················································· 7-3
7-1-4. MECHANISM DECK-2 ················································· 7-4
7-1-5. MECHANISM DECK-3 ················································· 7-5
7-2.

ELECTRICAL PARTS LIST ·········································· 7-6