Casio EV-660C Service Manual

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EV-660C

EV-660I

EV-660N

EV-660D

(KX-637)

SEP. 1999

EV-660

(without price)

(PAL B / G,H)

(PAL B / G)

(PAL B / G,H)

(PAL I)

Ver.1

Feb / 2000

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Summary of Contents for Casio EV-660C

Page 1 (without price) EV-660C (PAL B / G,H) EV-660I (PAL B / G) EV-660N (PAL B / G,H) EV-660D (PAL I) (KX-637) SEP. 1999 EV-660 INDEX Ver.1 Feb / 2000...
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ..................1 BLOCK DIAGRAM ..................2 ADJUSTMENTS .................... 3 EV-660C/I/N ....................4 EV-660D ..................... 9 PRINTED CIRCUIT BOARDS ..............14 EXPLODED VIEW ..................16 PARTS LIST ....................17 SCHEMATIC DIAGRAMS ................19...
Page 3: Specifications
87 (W) × 39 (D) × 128 (H) mm 14. Weight Approx. 8.5 oz 240 g (excluding batteries) Model Color System TV System Channel EV-660C/N B/G, H CCIR VHF: 2 ~ 12 ch UHF: 21 ~ 69 ch EV-660D –/I —...
Page 4 — 2 —...
Page 5 ADJUSTMENT 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.
Page 6: Block Diagram
Adjustment procedures (EV-660C/I/N) 1. VCC2 adjustment, VCC7, VCC6, VCC5, VEE1 voltage check • Condition (1) Signal No signal (2) Other conditions Power supply: Vcc1-1 = 5.00 ± 0.05 [V] • Adjustment Apply 5.00 ± 0.05 [V] on Vcc1-1. Adjust VR100 so that Vcc2 (CP108) voltage becomes 4.80 ± 0.02 [V].
Page 7: Adjustments
3. Free running frequency adjustment • Conditions (1) Signal No signal (PAL standard signal should be applied only at synchronous check) (2) Signal level Input electric field only at synchronous check: 70 ± 3 dBµ (terminated with 75Ω resistance), P/S = 10 dB (3) Other conditions CCIR IF input only at synchronous check (input electric field with 75 Ω...
Page 8 5. Contrast, Bright adjustment • Conditions (1) Signals Broadcasting system: B/G Color system: PAL color bar (2) Signal level Input electric field: 70 ± 3 dBµ (terminated with 75Ω resistance), P/S = 10 dB (3) Others CCIR IF input (input electric field should be terminated with 75Ω resistance) As to VIDEO signal, use signal source equivalent to TG7.
Page 9 6. COLOR adjustment • Condition (1) Signal Broadcasting system: B/G Color system: PAL color bar (2) Signal level Input electric field: 70 ± 3 dBµ (75Ω termination), P/S = 10 dB (3) Other conditions CCIR IF input (input electric field should be terminated with 75Ω resistance). Use VIDEO signal equivalent to TG7.
Page 10: Ev-660C/I/N
(VR730) so that 50Hz ripple component is minimum. • Caution Perform this adjustment when you replaced the display module. Use specified jig to replace photoelectric parts • Block diagram B.P.F. Photo diode S1133 Photosensor amp. C2719 EV-660C/I/N Oscilloscope AV JACK VCC1-1 Signal Stabilizer generator — 8 —...
Page 11 Adjustment procedures (EV-660D) 1. VCC2 adjustment, VCC7, VCC6, VCC5, VEE1 voltage check • Condition (1) Signal No signal (2) Other conditions Power supply: Vcc1-1 = 5.00 ± 0.05 [V] • Adjustment Apply 5.00 ± 0.05 [V] on Vcc1-1. Adjust VR100 so that Vcc2 (CP108) voltage becomes 4.80 ± 0.02 [V]. •...
Page 12 3. Free running frequency adjustment • Conditions (1) Signal No signal (PAL standard signal should be applied only at synchronous check) (2) Signal level Input electric field only at synchronous check: 70 ± 3 dBµ (terminated with 75Ω resistance), P/S = 7 dB (3) Other conditions UK IF input only at synchronous check (input electric field with 75 Ω...
Page 13 5. Contrast, Bright adjustment • Conditions (1) Signals Broadcasting system: I Color system: PAL color bar (2) Signal level Input electric field: 70 ± 3 dBµ (terminated with 75Ω resistance), P/S = 7 dB (3) Others UK IF input (input electric field should be terminated with 75Ω resistance) As to VIDEO signal, use signal source equivalent to TG7.
Page 14 6. COLOR adjustment • Condition (1) Signal Broadcasting system: I Color system: PAL color bar (2) Signal level Input electric field: 70 ± 3 dBµ (75Ω termination), P/S = 7 dB (3) Other conditions UK IF input (input electric field should be terminated with 75Ω resistance). Use VIDEO signal equivalent to TG7.
Page 15 8. VCOM DC adjustment • Conditions (1) Signals Broadcasting system: I Color system: PAL (2) Signal: Provide any PAL signal from AV Jack. (3) Others Power supply should be Vcc1-1 = 5.00 ± 0.05V. • Adjustment Monitoring Photo sensor AMP output with an oscilloscope via 50Hz band-pass filter, adjust VCOM DC VR (VR730) so that 50Hz ripple component is minimum.
Page 16: Printed Circuit Boards
PRINTED CIRCUIT BOARDS TOP VIEWS Linear Back Light — 14 —...
Page 17 BOTTOM VIEWS Linear Back Light — 15 —...
Page 18: Exploded View
EXPLODED VIEW & " " "! " !" " !& & "! " " "# 5" " "" & — 16 —...
Page 19 6614 3770 Upper panel CIM-K637 K140608-3 EV-660C 1001 9341 Upper panel DAM-K637 K140608-5 EV-660D 6614 3760 Upper panel NCM-K637 K140608-2 EV-660I/N EV-660C/N 1 6614 3080 Upper case BXM-K637 K140607-1 1001 9343 Upper case DAM-K637 K140607-3 EV-660D 6614 3780 Upper case IAM-K637 K140607-2 EV-660I...
Page 20 Item Code No. Parts Name Specification Applicable Q 6614 3640 Sealed case K637 K241193-1 Common 6611 5050 Adhesive tape A-K617 K440939-1 Common 6605 9650 Adhesive tape C-K604 K410642-3 Common 6614 3670 Sealed plate A-K637 K441788-1 Common 6607 0690 Insulation plate D-K508 K410441-3 Common 5860 0420 Screw...
Page 21: Schematic Diagrams
SCHEMATIC DIAGRAMS LINEAR (EV-660C/I/N) Audio Amplifier Circuit Chroma Circuit Speaker Earphone Jack External IF Detection Circuit Antenna Jack Tunner Power Switch Power Supply Circuit 25.0 ~ 30.0 V 18.0 ~ 20.0 V 11.0 ~ 13.0 V AC Jack ± 0.02 V –12.0 ~ –10.0 V...
Page 22 LINEAR (EV-660D) Audio Amplifier Circuit Chroma Circuit Speaker Earphone Jack External IF Detection Circuit Antenna Jack Tunner Power Switch Power Supply Circuit 25.0 ~ 30.0 V 18.0 ~ 20.0 V AC Jack 11.0 ~ 13.0 V ± 0.02 V –12.0 ~ –10.0 V Display Controller Circuit —...
Page 23 BACK LIGHT — 21 —...
Page 24 Ver.1 : PARTS LIST (P.17) was changed. CASIO TECHNO CO.,LTD. Overseas Service Division Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan...

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Ev-660i Ev-660n Ev-660d