R
EV-600B(NTSC)
SEPT. 1997
(without price)
(KX-613)
-- 1 --
CONTENTS
SPECIFICATIONS ......................................................................................... 2
BLOCK DIAGRAM ........................................................................................ 3
TROUBLESHOOTING ................................................................................... 4
PRINTED CIRCUIT BOARDS ....................................................................... 5
EXPLODED VIEW ......................................................................................... 7
PARTS LIST .................................................................................................. 8
SCHEMATIC DIAGRAMS ........................................................................... 11
WAVEFORMS .............................................................................................. 13
-- 2 --
SPECIFICATIONS
Item
Specification
1.
Reception channels
2.
Power voltage
DC 6.0 V
3.
Power consumption
Approx. 3.8 W
4.
Current consumption
Approx. 630 mA
5.
Battery life (with alkaline batteries)
Approx. 2.0 hours
Batteries
: 3 AA size batteries
6.
Power supply
Car adaptor : CA-K65
AC adaptor : AD-K64
Earphone jack
: 3.5ø mini
7.
Connection terminals
External power jack
: 6.0 V DC IN
External antenna jack
: 3.5ø mini
Audio / Video jack
: 3.5ø
8.
Screen size
3.0 inches
9.
No. of Picture element
75,816 (234
× 324) dots
10.
Dimensions
125.0 (W)
× 32.0 (D) × 101.2 (H) mm
11.
Weight
290 g excepting batteries
AC adaptor
: AD-K65,64
12.
Options
Car adaptor
: CA-K65
RF connector
: CF-13
Antenna matching device : AS-35S
AV cord
: AV-C1
VHF: 2 ~ 13 ch
UHF: 14 ~ 69 ch
-- 3 --
1
-- Color tuner: TU200 TEPU5-02
Selects a desired radio wave and changes it to the video IF signal.
2
-- Video IF amp.: Q200 2SC4238
Amplifies the video IF signal output from tuner TU200 by 10 times (20 dB).
3
-- Video det./Sound det./FM det./AFT/AGC: IC200 M51348AVP
Eliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal.
Also, the sound signal is picked up from the sound IF signal by FM detection.
4
-- Audio amp.: IC600 NJM2070M
Sound amplification.
5
-- Chroma circuit: IC300 IR3P90Y
Generates the tricolor (red, green, and blue) from the video signal.
6
-- Display control/Auto-tuning control: IC400 LZ93BA5
Controls the display.
7
-- Tuning voltage generator: IC501 BA10358F
Generates the tuning voltage with the tuning pulse output from 6.
BLOCK DIAGRAM
Antenna
1
7
24
Speaker
VR600
IC501
IC300
IC400
Volume
Control
3
5
6
Power
Supply
VCC2 (5.0
± 0.02 V)
VCC7 (28.8
± 2.9 V)
VCC6 (9.1
± 0.5 V)
VEE1 (20.0
± 2.0 V)
VEE2 (8.1
± 0.8 V)
Display
Control
Auto-Tuning
Control
Chroma
Circuit
Tuning
Voltage
Generator
Tuner
IF Amp.
LCD
Audio
Amp.
Video
Sound
Det.
FM
AFT Circuit
AGC Circuit
TU200
Q200
IC200
IC600
-- 4 --
Symptom
Cause
Solution
No power supply
Defective power switch (SW100).
Replace.
Defective DC-DC converter (T100).
Replace.
Defective tuner (TU200).
Replace.
Defective Q200.
Replace.
Defective IC200.
Replace.
Defective IC300.
Replace.
Defective IC400.
Replace.
Defective IC501.
Replace.
Defective IC200.
Replace.
Defective IC600.
Replace.
Defective phone jack (JK600).
Replace.
Defective tuner (TU200).
Replace.
Defective IC501.
Replace.
Defective power switch (SW100).
Replace.
TROUBLESHOOTING
Picture OK but
no sound
No reception of
VHF or UHF
No picture and
no sound