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| SSM- 721AMR
SSM- 721AMR
|
Note on the power of the monitor
When you press the POWER switch to release, the monitor
becomes standby condition. The power is not turned off
until you set the ignition key to the OFF position.
When you set the gear lever to the R position with
the POWER switch released (1 STD BY)
The monitor is turned on and the picture from the camera
connected to the CAMERA A connector appears
irrespective of the INPUT button setting. Using this feature,
connect the "rear view" camera to the CAMERA A
connector so that you can view the reversed picture from
the "rear view" camera each time you set the gear lever to
the R position.
To check the distance between your car and
another car or object behind your car
Attach the supplied monitor scale to the display.
1 Peel off the paper on the glue at the corners.
i)
9
°
90
o
9
SSM-721AMR
Monitor
scale
2 Attach the monitor scale to the display.
Only by attaching the supplied monitor scale, you can know
the distance between your car and another car or object
behind your car on the display.
Specifications
TV System
EIA standard
Picture tube
Black-and-white
7-inch picture measured diagonally
90-degree deflection angle
Picture image
Factory preset to reverse image
Picture resolution
650 TV lines
Power connector
White: Positive 12 V/24 V input
Black: Ground
Green: Reverse gear 12 V/24 V input
Speaker
Approx. Dia 50mm
inches)
Audio output
0.5 W max. (8 ohms)
4-pin multi connector x 2
@ 12 V, 0.2 A DC (output)
@) Video input: 1.0 V p-p, 75 ohms,
sync negative
® Ground
@) Audio input: -5 dBs (436
mVrms), 30 kilohms or more
Output
External speaker jack (minijack):
impedance 8 ohms
Power requirements
12 V or 24 V DC
Power consumption 23 W (max.)
Operating temperature range
—15°C to +60°C (5°F to 140°F)
Storage temperature range
—25°C to 85°C (-13°F to +185°F)
Dimensions
Approx. 203 x 151 x 215 mm (w/h/d)
(8 1/8 x 6 Xx 8 1/2 inches) incl.
projecting parts and controls
Weight
Approx. 3.2 kg (7 Ib), not incl.
mounting bracket
Accessories supplied
Mounting bracket (1), Screw (4), Bolt
(4), Washer (12), Spring washer (8),
Nut (4), Camera bracket holder (1),
Power cable (1 set), Monitor scale (1)
Optional accessories Black-and-white video camera
SSC-520AM
Camera cable VK-110A (10 m),
VK-115A (15 m), VK-120A (20 m)
Water-resistant camera cable
VK-310A (10 m), VK-318A (18 m),
VK-320A (20 m)
Water-resistant extension cable
VK-305 (5 m)
Monitor hood WU-700AM
Design and specifications are subject to change without
notice.
as
2-1.
A BOARD REMOVAL
an
2-2. PICTURE TUBE REMOVAL
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
@+ BV 3x8
flat washer (3)
cabinet
flat washer (3)
spring washer (4)
®+BV
4x16
Ve
®+ BV 4x16
| SSM- 721AMR
SSM-721AMR
|
SECTION 3
SAFETY RELATED ADJUSTMENT
+B VOLTAGE CONFIRMATION
(dq R606)
The following adjustment should always be performed when
replacing R606 or R607 (marked with [@ on the schematic
diagram).
(1) +B VOLTAGE
CONFIRMATION
1. Supply 24.0 V DC to the set.
2. Receive monoscope
signal.
3. Set controls and switch as follows.
CONTRAST: «<+seseeeeees minimum
BRIGHTNESS: -+++++++++- minimum
VOLUME: <<eeteeeeeeeces minimum
DAY / NIGHT
<ecereereres NIGHT
4, Confirm the voltage of D503 anode is whithin 11.5 V to
12.5 V DC.
5. If step 4 is not satisfied, replace R606 and repeat above
steps.
A Board
regulated - dc
power supply
HOLD-DOWN
CONFIRMATION
AND READJUSTMENT
(4 R812)
The following adjustment should always be performed when
replacing R812 or R812 (marked with {&@ on the schematic
diagram).
1. Receive monoscope
signal.
2. Set controls and switch as follows.
CONTRAST: +++ eeecceres minimum
BRIGHTNESS: :+++++++++- minimum
VOLUME: + ++eeccceeecees minimum
DAY/NIGHT -:-:--++++-:: NIGHT
wo
. Apply
an
external
DC
voltage
gradually
to anode
of
D503, and when the voltage becomes
15.0 V DC, confirm
HOLD
DOWN
circuit
operates
immediately
and
raster
disappears.
4. When
the voltage
becomes
12.5 V DC, confirm
HOLD
DOWN
circuit does not operate.
o
. If step 3 and 4 are not satisfied, replace R812 and repeat
above steps.
We 3-04
| SSM- 721AMR
SECTION 4
CIRCUIT ADJUSTMENT
If CRT is replaced, adjust follows.
. Receive a monoscope
signal.(Use TSG- 100/MTSG- 1000
Pattern generator SONY Corp.)
2. BRIGHTNESS
control:-:::-:
Maximum
CONTRAST
control:::+:>:-
Maximum
DAY/NIGHT
switch
-:---:-- DAY
3. Adjust RV702 so that 40 IRE part in 10 step grey scale
may light dimly and that 20 IRE part may
cut-off.
<monoscope
signal >
bn e
40 IRE (lights dimly)
20 IRE (cut -off)
Adjustment point :
C board
TRPRV702
e If
semiconductors
for
oscillation
and
synchronizing
circuit, or RV504
are replaced, adjust as follows.
1. Receive a color-bar signal.
2. CONTRAST:++++++:
50 %
BRIGHTNESS: ::::-
80%
3. Connect
the
electrolytic
capacitor
(10
wF/25
V)
between
the pin No.15 of IC501
and GND.
4. Adjust RV504
so that disturbance
on the screen stops.
5. Remove
the electrolytic capacitor from IC501.
R505
ele
C501
electrolytic
+
capacitor
(10 wF/25
V)
W111 ISS
fo: too low
fy = suitable
fo: too high
Adjustment point :
A Board
—10—
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