Casio EV-660 Quick start guide

— 2 —
BLOCK DIAGRAM
VCOM AMP
(NJM3414AVP)
L-PCB
BT LAMP
SUB-PCB
VCC2
BS
BV
VCC7
BATTERY 1.5V
x
4 AFT
AC ADAPTOR 6V
VCC1-1 EXT-R
EXT-G
LCM
COD30T3015LN
EXTERNAL VIDEO VIDEO2 VCOM EXTERNAL AUDIO R,G,B
VCC1-1 AUDIO2
Vcc7(30V) Vcc6(18.5V) Vcc5(12V) Vcc2(4.8V) Vee1(-10.5V)
CN920
CN700
CSYNC
HDB
FRP
CLR,SRT1,MCLK
BU
VIDEO1
AUDIO1
ANT
TUNER
(TEPE5-01)
LCD
384*243
INVERTER
TRANS
(C-8126)
CH
UPKEY
CH
DOWNKEY
SOURCE
DRIVER SOURCE
DRIVER
GATE DRIVER
EAR
PHONE
SP
VCC2-4 DOWN UP VCC1-1 GND VCC6 VCC5-1 VCC2-5 GND VEE1 MCLK CLR OE SRTL SRTR RESET GSRT GPCK GRES HCNT
MCLK CLROESRTL SRTL SRTR RESET GSRT GPCK GRES HCNT
POWER SW
BAND SW
AV JACK
AUDIO AMP
(NJM2070M)
DC/DC
CONVERTER
TRANS
TFT
CONTROLER
(CM7017L3)
TFT
CHROMA
(IR3Y18A)
TUNING
CONTROLER
(SED3950F)
PRE
AMP SAW
FILTER VIF/SIF
(M51348FP)
TUNING
BT AMP
(BA10358)
BT

— 3 —
CP238
T200
VR730
CP750
CP711
CP324
CP705
CP725
VR710
VR303
CP344
VR300
T300
CP308
VR301 CP106
CP107
CP105
CP108 VR100
CP101
CP109
ADJUSTMENT
Top View Bottom View
1. Vcc2 adjustment, Vcc7, Vcc6, Vcc5, Vee1 voltage check
2. LLD coil adjustment
3. Free running frequency adjustment
4. VOM AC and VCOM DC coarse adjustment
5. Contrast, Bright adjustment
6. COLOR adjustment
7. BCC coil adjustment
8. VCOM DC adjustment
Preparations
1. For the above 1 - 7 adjustments, connect JACK to the ground GND(OV).
Adjustment And Test Point Locations

— 14 —
PRINTED CIRCUIT BOARDS
TOP VIEWS
Linear
Back Light

— 15 —
BOTTOM VIEWS
Linear
Back Light

— 16 —
EXPLODED VIEW
9
9
1
2
3
7
S1 30
32
33
34
35
36
40
41
39
44
29
43
37
42
42 43
31
11
6
5
4
12
24
13
S3
27
28
14
S2
23
22
S2
15
S5
7
10 8
S2
17
18
26 29
21
20
19
16
S2
S4
45
38
S1
S1
25

— 19 —
SCHEMATIC DIAGRAMS
LINEAR (EV-660C/I/N)
Power Supply Circuit
Power Switch
External
Antenna
Jack
Earphone
Jack
Tunner
Speaker
AC Jack
25.0 ~ 30.0 V
–12.0 ~ –10.0 V
18.0 ~ 20.0 V
4.8 ±0.02 V
11.0 ~ 13.0 V
Display Controller Circuit
Chroma Circuit
IF Detection Circuit
Audio Amplifier Circuit

— 20 —
Power Supply Circuit
Power Switch
External
Antenna
Jack
Earphone
Jack
Tunner
Speaker
AC Jack
25.0 ~ 30.0 V
–12.0 ~ –10.0 V
18.0 ~ 20.0 V
4.8 ±0.02 V
11.0 ~ 13.0 V
Display Controller Circuit
Chroma Circuit
IF Detection Circuit
Audio Amplifier Circuit
LINEAR (EV-660D)

— 21 —
BACK LIGHT