Sony SLV-ED212KR / SLV-ED717KR / SLV-ED818TW / SLV-ED919KR / SLV-ED919TW / SLV-LF1KR Service Manual ▷ View online
7-4
3. Overall Level Characteristic and Distortion Factor
Check
Purpose:
Check the record level, play level, and distortion factor against the
reference input.
Check the record level, play level, and distortion factor against the
reference input.
Mode
REC and PB (SP mode)
Signal
400 Hz, –7.5 dBs
Measurement point
Audio output terminal
Measurement equipment
Audio level meter and
distortion factor meter
Specified value
Playback level: –7.5 ± 2.0 dBs
Distortion factor: 1% or less
Distortion factor: 1% or less
Confirmation Method:
1) Supply an audio signal of 400 Hz, –7.5 dBs simultaneously to
1) Supply an audio signal of 400 Hz, –7.5 dBs simultaneously to
both L and R channels of Audio Line Input.
2) Make recording
3) Play back a recorded portion.
4) Confirm that a playback level is –7.5 ±2.0 dBs.
5) Confirm that a distortion factor is within 1%.
3) Play back a recorded portion.
4) Confirm that a playback level is –7.5 ±2.0 dBs.
5) Confirm that a distortion factor is within 1%.
4. Overall S/N Check
Purpose:
Confirm that the S/N is within the specification.
Purpose:
Confirm that the S/N is within the specification.
Mode
REC and PB (SP mode)
Signal
Short
Measurement point
Audio output terminal
Measurement equipment
Audio noise meter
Specified value
–67.5 dBs or less
Confirmation Method:
1) Connect both L and R channels of audio line input to the GND.
2) Start recording.
3) Play the recorded part to confirm that the noise is below –67.5
1) Connect both L and R channels of audio line input to the GND.
2) Start recording.
3) Play the recorded part to confirm that the noise is below –67.5
dBs.
2-4-2.
Normal Audio System Adjustment
• Make adjustment in the SP mode, unless otherwise specified. Use
a normal VHS cassette for an adjustment tape.
• Set AUDIO MONITOR to normal.
[Adjustment Sequence]
1. ACE Head Adjustment
2. E-E Output Level Check
3. Frequency Response Check
4. Overall Level Characteristic and Distortion Factor
1. ACE Head Adjustment
2. E-E Output Level Check
3. Frequency Response Check
4. Overall Level Characteristic and Distortion Factor
Check
5. Overall S/N Check
1. ACE Head Adjustment
Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENT VI.
Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENT VI.
2. E-E Output Level Check
(SLV-ED212/ED717)
Purpose:
Confirm that the output level against the reference input is within the
specification.
Confirm that the output level against the reference input is within the
specification.
Mode
E-E
Signal
L, R: 400 Hz, –7.5 dBs
Measurement point
Audio output terminal
Measurement equipment
Audio level meter
Specified value
–7.5 ± 2.0 dBs
Confirmation Method:
1) Simultaneously input a signal of 400 Hz, –7.5 dBs to both L
1) Simultaneously input a signal of 400 Hz, –7.5 dBs to both L
and R channels of Audio Line Input.
2) Confirm that the audio output level is –7.5 ± 3.0 dBs.
(This level only can appear with mono models)
(This level only can appear with mono models)
3. Frequency Response Check
Purpose:
Confirm that the frequency characteristic is within the specification.
Purpose:
Confirm that the frequency characteristic is within the specification.
Mode
REC and PB (SP mode)
Signal
400 Hz, –17.5 dBs
7 kHz, –17.5 dBs
7 kHz, –17.5 dBs
Measurement point
Audio output terminal
Measurement equipment
Audio level meter
Specified value
0 ± 4 dB
Tape path adjustment must have been completed.
Confirmation Method:
1) Supply a signal of 400 Hz, –17.5 dBs to both L and R channels
1) Supply a signal of 400 Hz, –17.5 dBs to both L and R channels
of Audio Line Input.
2) Connect the audio level meter to the Audio Line Output.
3) Adjust the attenuator so that the audio level meter will indicate
3) Adjust the attenuator so that the audio level meter will indicate
–17.5 dBs.
4) Make recording in the SP mode.
5) Set an audio line input signal to 7 kHz and make recording.
6) Playback a recorded portion, and measure output levels at 400
5) Set an audio line input signal to 7 kHz and make recording.
6) Playback a recorded portion, and measure output levels at 400
Hz and 7 kHz.
7) Confirm that the 7 kHz playback output level within a range of
the 400 Hz playback output level 0 ± 4 dB.
7-5
4. Overall Level Characteristic and Distortion Factor
Check
Purpose:
Check the record level, play level, and distortion factor against the
reference input.
Check the record level, play level, and distortion factor against the
reference input.
Mode
REC and PB (SP mode)
Signal
400 Hz, –7.5 dBs
Measurement point
Audio output terminal
Measurement equipment
Audio level meter and
distortion factor meter
Specified value
Playback level: –7.5 ± 4.0 dBs
Distortion factor: 4% or less
Distortion factor: 4% or less
Confirmation Method:
1) Supply an audio signal of 400 Hz, –7.5 dBs simultaneously to
1) Supply an audio signal of 400 Hz, –7.5 dBs simultaneously to
both L and R channels of Audio Line Input.
2) Make recording
3) Play back a recorded portion.
4) Confirm that a playback level is –7.5 ± 4.0 dBs. (mono audio)
5) Confirm that a distortion factor is less than 4%.
3) Play back a recorded portion.
4) Confirm that a playback level is –7.5 ± 4.0 dBs. (mono audio)
5) Confirm that a distortion factor is less than 4%.
5. Overall S/N Check
Purpose:
Confirm that the S/N is within the specification.
Purpose:
Confirm that the S/N is within the specification.
Mode
REC and PB (SP mode)
Signal
Short
Measurement point
Audio output terminal
Measurement equipment
Audio noise meter
Specified value
–46.0 dBs or less
Confirmation Method:
1) Connect both L and R channels of audio line input to the GND.
2) Start recording.
3) Play the recorded part to confirm that the noise is below –46.0
1) Connect both L and R channels of audio line input to the GND.
2) Start recording.
3) Play the recorded part to confirm that the noise is below –46.0
dBs.
2-5.
TUNER SYSTEM ADJUSTMENT
[Connection]
Fig. 7-2-6
2-5-1.
Separation Adjustment
(SLV-ED818/ED919TW)
(SLV-ED818/ED919TW)
Purpose:
Mixed audio signal separate Lch and Rch.
Mixed audio signal separate Lch and Rch.
Mode
E-E
Signal
VIDEO:
color bar
(White 100% modulation)
AUDIO:
L NONE
R 1 kHz 60% modulation
ELECTRIC FIELD:
60–80 dBs/75
Ω Term
Measurement point
Pin qx of IC701
Measurement equipment
Audio level meter
Adjusting Element
RV701 (MA-402 Board)
Specified value
minimum -9.9 ± 0.2 dBm
(700 ± 14mVp-p)
47 k
Ω
VCR
Audio level
meter
meter
Up channel
convertor
convertor
RF IN
AUDIO LINE OUT
L
R
2-6.
PARTS ARRANGEMENT DIAGRAM FOR ADJUSTMENTS
MA-402 BOARD (Side A)
JL625
JL614
JL615
JL604
JL611
JL618
JS401
IC701
RV701
CN202
CN412
7-6E
SLV-ED212/ED717/ED818/ED919/LF1
8-1
8-2
SECTION 8
REPAIR PARTS LIST
8-1. EXPLODED VIEWS
NOTE:
•
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
•
The mechanical parts with no reference number
in the exploded views are not supplied.
in the exploded views are not supplied.
8-1-1. FRONT PANEL AND UPPER CASE SECTION
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
VID
EO
1
14
15
2
3
3
3
5
5
4
6
7
8
7
11
12
10
12
13
17
17
16
not supplied
not supplied
LF1
ED212/ED717/
ED818/ED919
ED818/ED919
ED212/ED717/
ED919/LF1
ED919/LF1
not supplied
3
9
1
X-3951-331-2
PANEL ASSY, FRONT
(LF1)
1
X-3951-339-1
PANEL ASSY, FRONT
(ED919KR)
1
X-3951-341-1
PANEL ASSY, FRONT
(ED717)
1
X-3951-343-1
PANEL ASSY, FRONT
(ED212)
1
X-3951-344-1
PANEL ASSY, FRONT
(ED919TW)
1
X-3951-345-1
PANEL ASSY, FRONT
(ED818)
2
3-953-432-01
SPRING (GE), FL
(ED212/ED717/ED818/ED919)
3
4-921-277-41
SCREW (B2.6 x 8), TAPPING, BIND
* 4
A-6713-876-A
DM-098 COMPLETE PWB
(ED212/ED717/ED818/ED919)
* 4
A-6713-988-A
DM-098 COMPLETE PWB
(LF1)
5
1-757-552-12
FLAT CABLE FDM-010
* 6
A-6713-877-A
DI-081 COPLETE PWB
(ED212/ED717/ED818/ED919)
7
1-757-553-11
FLAT CABLE FDI-002
(ED212/ED717/ED818/ED919)
* 8
A-6713-870-A
FJ-031 COMPLETE PWB
(ED212)
* 8
A-6713-889-A
FJ-031 COMPLETE PWB
(ED717)
* 8
A-6713-878-A
FJ-031 COMPLETE PWB
(ED818/ED919)
* 9
A-6713-968-A
FJ-033 COMPLETE PWB
(LF1)
10
1-782-752-41
CORD, POWER
(ED212/ED717/ED919KR/LF1)
10
1-777-852-33
CORD, POWER
(ED818/ED919TW)
The components identified by mark
or
dotted line with mark
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
! sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
! sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
11
3-064-641-41
CASE, UPPER
(ED212/ED717/ED818/ED919)
11
3-066-121-11
CASE, UPPER
(LF1)
12
3-710-901-61
SCREW, TAPPING
13
1-476-475-71
COMMANDER, STANDARD (RMT V-312)
(ED212)
13
1-476-475-81
COMMANDER, STANDARD (RMT V-312A)
(ED717)
13
1-476-533-11
COMMANDER, STANDARD (RMT V-312C)
(ED818)
13
1-476-474-11
COMMANDER, STANDARD (RMT V-310)
(ED919KR)
13
1-476-475-91
COMMANDER, STANDARD (RMT V-312B)
(ED919TW)
13
1-476-687-11
COMMANDER, STANDARD (RMT V-315)
(LF1)
14
3-943-995-31
EMBLEM (NO.5), SONY
(ED212/ED717/ED818/ED919)
15
X-3951-233-1
KNOB ASSY, ETR
(ED212/ED717/ED818/ED919)
16
3-055-077-01
SPRING, ETR (P5)
(ED212/ED717/ED818/ED919)
17
3-057-164-11
INSULATOR
(ED212/ED717/ED818/ED919)
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