Sony XTL-6100 (serv.man2) Service Manual ▷ View online
– 1 –
SUPPLEMENT-1
File this supplement with the Service Manual.
XTL-6100
UK Model
German Model
SERVICE MANUAL
Subject : HIDEAWAY UNIT (XT-981V)
TABLE OF CONTENTS
1. ELECTRICAL ADJUSTMENTS
...............................
2
2. DIAGRAMS
2-1. Block Diagram –Video Section– ......................................... 5
2-2. Block Diagram –Audio Section– ........................................ 7
2-3. Printed Wiring Board .......................................................... 9
2-4. Schematic Diagram –Tuner Main Section (1/3)– ............. 13
2-5. Schematic Diagram –Tuner Main Section (2/3)– ............. 15
2-6. Schematic Diagram –Tuner Main Section (3/3)– ............. 17
2-2. Block Diagram –Audio Section– ........................................ 7
2-3. Printed Wiring Board .......................................................... 9
2-4. Schematic Diagram –Tuner Main Section (1/3)– ............. 13
2-5. Schematic Diagram –Tuner Main Section (2/3)– ............. 15
2-6. Schematic Diagram –Tuner Main Section (3/3)– ............. 17
3. EXPLODED VIEW
3-1. Hideaway Unit (XT-981V) ............................................... 21
4. ELECTRICAL PARTS LIST
.....................................
22
– 2 –
TRAP Adjustment
Procedure:
1. With the Power off, input the output of TG to TP30 (with DC
1. With the Power off, input the output of TG to TP30 (with DC
cut by a capacitor (0.01
µ
F)).
2. Connect a spectrum analyzer to TP31 (with DC cut by a
capacitor (0.01
µ
F)).
3. Adjust T1 so that the waveform peak is 40.9 MHz
±
50 Hz.
4. Adjust T2 so that the waveform peak is 31.9 MHz
±
50 Hz.
5. After this adjustment, open TP30 and TP31. (Disconnect the
spectrum analyzer.)
VCO Adjustment
Procedure:
1. No connection to ANT IN. (no signal state)
2. Connect a resistor (10 k
1. No connection to ANT IN. (no signal state)
2. Connect a resistor (10 k
Ω
) between TP33 and +9 V (TP35).
3. Connect a spectrum analyzer to TP34 (with DC cut by a
capacitor (0.01
µ
F)).
4. Adjust T3 so that the waveform peak is 38.9 MHz
±
1 kHz.
5. After this adjustment, open TP34. (Disconnect the spectrum
analyzer.)
AGC Adjustment
Procedure:
1. Set the TV SYSTEM switch to 1.
2. Input a color bar signal of E8ch (196.25 MHz) and 66 dB
1. Set the TV SYSTEM switch to 1.
2. Input a color bar signal of E8ch (196.25 MHz) and 66 dB
µ
V
(75
Ω
OPEN).
3. Connect the digital voltmeter to TP42.
4. Adjust VR1 so that reading on the digital voltmeter is
4. Adjust VR1 so that reading on the digital voltmeter is
6.0
±
0.1 V.
AFT Adjustment
Procedure:
1. Input a color bar signal of E8ch (196.25 MHz) and 74 dB
1. Input a color bar signal of E8ch (196.25 MHz) and 74 dB
µ
V
(75
Ω
OPEN).
2. Connect the oscilloscope to TP102.
3. Adjust T3 untill the waveform on the oscilloscope is 2.5 Vp-p.
3. Adjust T3 untill the waveform on the oscilloscope is 2.5 Vp-p.
• Use the following equipment for the electrical adjustment.
Equipment
1 Monitor TV (XVM-6100, etc.)
2 Spectrum analyzer
3 TV signal generator
4 Digital voltmeter
5 Oscilloscope
6 Audio analyzer
7 DC power supply
8 Frequency counter
2 Spectrum analyzer
3 TV signal generator
4 Digital voltmeter
5 Oscilloscope
6 Audio analyzer
7 DC power supply
8 Frequency counter
Equipment Connections
Connect the test equipment as shown in the figure below (unless
otherwise instructed) and perform the adjustment.
otherwise instructed) and perform the adjustment.
Setup during Adjustment
Use the video signal obtained from the TV signal generator as the
alignment signal, and check that this signal is within video output
signal standards.
alignment signal, and check that this signal is within video output
signal standards.
Connection points: Refer to page 4.
Adjustment points: Refer to page 4.
Adjustment points: Refer to page 4.
SECTION 1
ELECTRICAL ADJUSTMENTS
TUNER UNIT SECTION
TV SG
set
POWER (CN4)
RF out
ANT IN
DC
power supply
power supply
0.7 V
0.3 V
0.3 V
red
white (approx. 100%)
horizontal sync. signal
burst signal (flat)
Color bar signal from TV signal generator
T1= 40.9 MHz
T2= 31.9 MHz
T2= 31.9 MHz
38.9 MHz
2.5 Vp-p
0 V
Note:
Small peaks (dips) coming out from the top of the
waveform are unacceptable.
waveform are unacceptable.
– 3 –
– 4 –
RGB Decoder FO Adjustment
Procedure:
1. Without INPUT1, INPUT2 inputs (no signal input mode), short
1. Without INPUT1, INPUT2 inputs (no signal input mode), short
the jumper wire between TP100 and GND.
2. Connect a frequency counter to TP61.
3. Adjust VR6 so that reading on frequency counter is
3. Adjust VR6 so that reading on frequency counter is
4.433619 MHz
±
10 Hz.
4. Short the jumper wire between TP106 and GND.
5. Connect a frequency counter to TP61.
6. Confirm that reading on frequency counter is 3.579545 MHz
5. Connect a frequency counter to TP61.
6. Confirm that reading on frequency counter is 3.579545 MHz
±
100 Hz.
7. After this adjustment, remove the jumper wires.
RGB Decoder Input Level Adjustment
Procedure:
1. Input signal : PAL EBU color bar (INPUT 1 VIDEO)
2. Adjust VR4 so that the white peak 1 (100% white) of
1. Input signal : PAL EBU color bar (INPUT 1 VIDEO)
2. Adjust VR4 so that the white peak 1 (100% white) of
TP111 (B OUT) is at 1.0 Vp-p.
DL AMP & DAT Adjustment
Procedure:
1. Adjust DAT so as to minimize the variation between the level
1. Adjust DAT so as to minimize the variation between the level
2 and the level 3 of TP111.
2. Adjust VR5 so that the blue level 4 is at 1.0 Vp-p.
3. Set the input to NTSC, and confirm that the blue level 4 is at
3. Set the input to NTSC, and confirm that the blue level 4 is at
1.0
±
0.1 Vp-p.
T3: VCO Adjustment
: AFT Adjustment
: AFT Adjustment
VR1: AGC Adjustment
T2: TRAP Adjustment
T1: TRAP Adjustment
VR5: DL AMP & DAT Adjustment
VR6: RGB Decoder FO Adjustment
VR4: RGB Decoder
input Level Adjustment
input Level Adjustment
TP100
TP106
TP111
TP61
TP102
TP42
TP30
TP34
TP33
TP31
white
blue
SYNC
TP111
1
2
4
3
white
blue
SYNC
TP111
1
2
4
3
Connection Points and Adjustment Points:
XTL-6100
– 5 –
– 6 –
2-1. BLOCK DIAGRAM — VIDEO SECTION —
SECTION 2
DIAGRAMS
J5-1
INPUT 1
VIDEO
J6-1
INPUT 2
VIDEO
TO
AUDIO
SECTION
VIDEO
V1
1
2
3
7
2
13
3
5
6
7
1
3
4
VIDEO
SWITCH
IC19
V2
SYNC GENERATOR
IC31
X3
3.58MHz
XT
XT
C.
SYNC
SYNC
RESET
BUF
Q90
Q90
12
14
4
VIDEO SWITCH
IC18 (1/2)
9
10
11
COMP
BUF
Q60
Q60
NT/PAL
SWITCH
Q129
RELAY
DRIVE
Q128
VR4
RGB
DECODER
INPUT
LEVEL
LEVEL
VR6
RGB
DECODER
FO
DL2
BUF
Q103
APC
ACC
IH
DL
DEM
DL
AMP
MONITOR
OUT
DL AMP
& DAT
Y/C
MIX
HUE
VXO
CHROMA
AMP
24
2
4
3
1
10
15
9
8
11
12
14
23
32
Y
SYNC
IN
IN
C
RL1
R
C. SYNC
G
B
DAT
30
RGB DECODER
IC24
X5 4.43MHz
X4 3.58MHz
VIDEO
BUF
Q91, 92
5
4
12
2
9 10 11
14
15
R
BUF
Q64
Q64
G
BUF
Q63
Q63
B
BUF
Q62
Q62
SYNC
BUF
Q61
Q61
RGB SWITCH
IC26
C B A
12
15
14
13
CN3
VBS
R
G
B
6
+B 12V
16
NT/PAL
3
AUDIO
5
BRIGHT
9
PICTURE SW
8
POWER SW
10
SIRCS
2
BEEP
Q101
Q100
VR5
61
62
46
13
58
59
52
51
64
11
45
POWER
ON/OFF
Q10
SYNC
SEP
IC17
SIRCS
Q77
COL
HUE
V SYNC
H SYNC
H
43 V. MUTE
39 VD/RGB
38 SIMUL
NT/PAL
YS
ON/OFF
DISPLAY OFF
BRT
SIRCS
37
BEEP
BEEP GEN
IC21 (1/2)
IC21 (1/2)
1
6
SYSTEM CONTROL
IC12 (2/2)
8
6
7
BUF
Q42
Q42
BUF
Q40, 41
SIMULATION
BUFFER
Q53
12
13
11
IC21 (2/4)
+B
(S +12V)
AUDIO
TO
AUDIO
SECTION
J8-1
OUTPUT
VIDEO
04
• Signal path
: AUDIO
: VIDEO
