SANYO VPC-S6GX, VPC-S6U, VPC-S6 WARNING

WARNING

Do not use solder containing lead.

This product has been manufactured using lead-free solder in order to help preserve the environment. Because of this, be sure to use lead-free solder when carrying out repair work, and never use solder containing lead.

Lead-free solder has a melting point that is 30 - 40°C (86 104°F) higher than solder containing lead, and moreover it does not contain lead which attaches easily to other metals. As a result, it does not melt as easily as solder containing lead, and soldering will be more difficult even if the temperature of the soldering iron is increased. The extra difficulty in soldering means that soldering time will increase and damage to the components or the circuit board may easily occur. Because of this, you should use a soldering iron and solder that satisfy the following conditions when carrying out repair work.

Soldering iron

Use a soldering iron which is 70 W or equivalent, and which lets you adjust the tip temperature up to 450°C (842°F). It should also have as good temperature recovery characteristics as possible. Set the temperature to 350°C (662°F) or less for chip components, to 380°C (716°F) for lead wires and similar, and to 420°C (788°F) when installing and removing shield plates. The tip of the soldering iron should have a C-cut shape or a driver shape so that it can contact the circuit board as flat or in a line as much as possible.

Note:

If replacing existing solder containing lead with lead-free solder in the soldered parts of products that have been manufactured up until now, remove all of the existing solder at those parts before applying the lead-free solder.

Solder

Use solder with the metal content and composition ratio by weight given in the table below. Do not use solders which do not meet these conditions.

Metal content

Composition ratio by weight

Lead-free solder is available for purchase as a service tool. Use the following part number when ordering:

Part name: Lead-free solder with resin (0.5 mm dia., 500 g) Part number: VJ8-0270

Tin (Sn) Silver (Ag)

96.5 %

3.0 %

Copper (Cu)

0.5 %

– 2 –

1. OUTLINE OF CIRCUIT DESCRIPTION

1-1. CCD CIRCUIT DESCRIPTION

1. IC Configuration

The CCD peripheral circuit block basically consists of the following ICs. IC903 (MN39830PMJAA) CCD imager IC901 (AN20112A) V driver IC905 (AD9948AKCP) CDS, AGC, A/D converter,

H driver

Pin 13

Pin 1

2. IC903 (CCD)

[Structure]

Interline type CCD image sensor

Optical size 1/2.5 type format Effective pixels 2864 (H) X 2160 (V) Pixels in total 2934 (H) X 2171 (V) Optical black

Horizontal (H) direction: Front 12 pixels, Rear 58 pixels Vertical (V) direction: Front 6 pixels, Rear 5 pixels

Dummy bit number Horizontal : 28 Vertical :7

Pin No.

Symbol Pin Description

Fig. 1-1.Optical Black Location (Top View)

Photo diode

VDD

GND

13 14

Vertical shift register

Output part

Horizontal shift register

11 12 23 24 17 18 19

Fig. 1-2. CCD Block Diagram

Waveform

Voltag e

8 9

ø ø ø

GND

SUBSW

V6 V5B V5A V4

V3B V3A V3L V3R

V2 V1 V1S

V5R

V5L

Vsub

1, 23, 24

2, 3

4, 7, 8, 9, 11

5, 6, 10

12, 15

20, 21

6, V5R , V5L

5B, V5A Vertical register transfer clock

V4, V3L, V3R,

V2, V1S

3B, V3A, V1

VDD

ØRG

GND

Vertical register transfer clock

Signal output

Circuit power

Reset gate clock

GND Protection transister bias

Substrate controlSUB SW

SUB

L, H1

Substrate clock

Horizontal register transfer clock

Table 1-1. CCD Pin Description

-6.0 V, 0 V

-6.0 V, 0 V, 12 V

-6.0 V, 0 V

-6.0 V, 0 V, 12 V

Aprox. 12 V

12 V

4.5 V, 7.8 V

GND 0 V

-6.0 V

0, 3.3 V (When importing all picture element: 3.3 V)

Aprox. 6 V (Different from every CCD)

0 V, 3.3 V

When sensor read-out

– 3 –

3. Part of IC905 (H Driver) and IC901 (V Driver)

An H driver (part of IC905) and V driver (IC901) are necessary in order to generate the clocks (vertical transfer clock, horizontal transfer clock and electronic shutter clock) which driver the CCD. IC905 has the generation of horizontal transfer clock and the function of H driver, and is an inverter IC which drives the horizontal CCDs (H1 and H2). In addition the XV1-XV6 signals which are output from IC101 are vertical transfer clocks, and the XSG signal is superimposed onto XV1, XV3 and XV5 at IC901 in order to generate a ternary pulse. In addition, the XSUB signal which is output from IC101 is used as the sweep pulse for the electronic shutter, and the RG signal which is output from IC905 is the reset gate clock.

VMSUB

3-level

OSUB

OV1

RESET

SUBCNT

VDC

CH1

V5R

V5L

V3R

V3L

V1S

2-level

24OV2

2-level

23OV4

2-level

21OV6

3-level

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

2-level

3-level

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

Level

conversion

VHH

OV5R

OV5L

OV3R

OV3L

OV1S

OV5A

OV5B

OV3A

OV3B

GND

CH2

CH4

CH3

CH5

SUB

4. IC905 (H Driver, CDS, AGC and A/D converter)

IC905 contains the functions of H driver, CDS, AGC and A/D converter. As horizontal clock driver for CCD image sensor, HØ1 (A and B) and HØ2 (A and B) are generated inside, and output to CCD. The video signal which is output from the CCD is input to pins (27) of IC905. There are sampling hold blocks generated from the SHP and SHD pulses, and it is here that CDS (correlated double sampling) is carried out. After passing through the CDS circuit, the signal passes through the AGC amplifier (VGA: Variable Gain Amplifier). It is A/D converted internally into a 10-bit signal, and is then input to ASIC (IC101). The gain of the VGA amplifier is controlled by pin (31)-(33) serial signal which is output from ASIC (IC101).

REFB

REFT

VREF

ADC

INTERNAL

REGISTERS

SCK

SDATA

DOUT

HBLK

CLP/PBLK

CLI

10-BIT

CLAMP

CCDIN

H1-H4

6~42 dB

0~18 dB

VGA

PxGA

CDS

INTERNAL

CLOCKS

HORIZONTAL

DRIVERS

AD9948

PRECISION

TIMING

CORE

SYNC

GENERATOR

Fig. 1-4. IC905 Block Diagram

Fig. 1-3. IC901 Block Diagram

– 4 –

1-2. CP1 CIRCUIT DESCRIPTION

1. Circuit Description 1-1. Digital clamp

The optical black section of the CCD extracts averaged values from the subsequent data to make the black level of the CCD output data uniform for each line. The optical black section of the CCD averaged value for each line is taken as the sum of the value for the previous line multiplied by the coefficient k and the value for the current line multiplied by the coefficient (k-1).

1-2. Signal processor

1. γ correction circuit

This circuit performs (gamma) correction in order to maintain a linear relationship between the light input to the camera and the light output from the picture screen.

2. Color generation circuit

This circuit converts the CCD data into RGB signals.

3. Matrix circuit

This circuit generates the Y signals, R-Y signals and B-Y signals from the RGB signals.

2. Outline of Operation

When the shutter opens, the reset signals and the serial signals (“take a picture” commands) from the 8-bit microprocessor are input to ASIC (IC101) and operation starts. When the TG/SG drives the CCD, picture data passes through the A/D and CDS, and is then input to the ASIC as 12-bit data. The AF, AE, AWB, shutter, and AGC value are computed from this data, and three exposures are made to obtain the optimum picture. The data which has already been stored in the SDRAM is read by the CPU and color generation is carried out. Each pixel is interpolated from the surrounding data as being either R, G and B primary color data to produce R, G and B data. At this time, correction of the lens distortion which is a characteristic of wide-angle lenses is carried out. After AWB and γ processing are carried out, a matrix is generated and aperture correction is carried out for the Y signal, and the data is then compressed by the JPEG method by (JPEG) and is then written to card memory (SD card). When the data is to be output to an external device, it is taken data from the memory and output via the USB. When played back on the LCD and monitor, data is transferred from memery to the SDRAM, and the data elongated by JPEG decorder is displayed over the SDRAM display area.

4. Horizontal and vertical aperture circuit

This circuit is used gemerate the aperture signal.

1-3. AE/AWB and AF computing circuit

The AE/AWB carries out computation based on a 256-segment screen, and the AF carries out computations based on a 11-segment screen.

1-4. SDRAM controller

This circuit outputs address, RAS, CAS and AS data for controlling the SDRAM. It also refreshes the SDRAM.

1-5. Communication control

1. SIO

This is the interface for the 8-bit microprocessor.

2. PIO/PWM/SIO for LCD

8-bit parallel input and output makes it possible to switch between individual input/output and PWM input/output. It is prepared for 16-bit parallel output.

1-6. TG/SG

Timing generated for 6 million pixel CCD control.

1-7. Digital encorder

It generates chroma signal from color difference signal.

1-8. JPEG encorder and decorder

It is compressed and elongated the data by JPEG system.

3. LCD Block

LCD block is in the CP1 board, and it is constructed by VCOM generation circuit etc. The video signal from the ASIC are 8bit digital signal, and input to LCD directly. It is converted into RGB signals at driver circuit in the LCD. The VCOM (common polar voltage: AC) and the R, G and B signals becomes greater, the display becomes darker; if the difference in potential is smaller, the element opens and the LCD become brighter. And also the timing pulse except the video signal is input to LCD directly from ASIC.

4. Lens drive block

4-1. Shutter drive

The shutter drive signal (SIN1 and SIN2) which is output from the ASIC is drived the shutter constant level driver (IC951), and then shutter is opened and closed.

4-2. Iris drive

The iris stepping motor drive signals (IIN1 and IIN2) which are output from the ASIC (IC101) are used to drive by the motor driver (IC951).

4-3. Focus drive

The focus stepping motor drive signals (FIN1, FIN2, FIN3 and FIN4) which are output from the ASIC (IC101) are used to drive by the motor driver (IC951). Detection of the standard focusing positions is carried out by means of the photointerruptor (AFPI) inside the lens block.

4-4. Zoom drive

The zoom DC motor drive signals (ZIN1 and ZIN2) which are output from the ASIC (IC101) are used to drive by the motor driver (IC951). Detection of the zoom positions is carried out by means of photoreflector (ZMPI) inside the lens block.

– 5 –

1-3. PWA POWER CIRCUIT DESCRIPTION

1. Outline

This is the main power circuit, and is comprised of the following blocks. Switching controller (IC501) Analog system power output (L5001, Q5001) 5 V power output (L5014, Q5008) Digital 3.25 V power output (L5006) Digital 1.2 V power output (L5007) LCD 15 V system power output (L5005, Q5004) Backlight power output (L5008, Q5009) Motor system power output (IC531, L5301, Q5301)

2. Switching Controller (IC501)

This is the basic circuit which is necessary for controlling the power supply for a PWM-type switching regulator, and is provided with seven built-in channels, only CH1 (digital system

1.2 V), CH2 (digital 3.25 V), CH4 (LCD 15 V system), CH5 (analog system), CH6 (backlight system) and CH7 (5 V system) are used. Feedback from digital system 1.2 V (D) (CH1),

3.25 V (D) (CH2), LCD 15 V system (CH4), analog system (CH5), backlight system (CH6) and 5 V system (CH7) power supply outputs are received, and the PWM duty is varied so that each one is maintained at the correct voltage setting level. Feedback for the backlight power (CH6) is provided to the both ends voltage of registance so that regular current can be controlled to be current that was setting.

2-1. Short-circuit protection circuit

If output is short-circuited for the length of time determined by internal fixing of IC501 , all output is turned off. The control signal (P ON) are recontrolled to restore output.

3. Analog System Power Output

+12 V (A), +3.45 V (A) and -6.0 V (A) are output. Feedback for the +12 V (A) is provided to the switching controller (Pin (4) of IC501) so that PWM control can be carried out.

4. Digital 3.25 V Power Output

VDD3 is output. Feedback for the VDD3 is provided to the swiching controller (Pin (54) of IC501) so that PWM control can be carried out.

5. Digital 1.2 V Power Output

VDD1.2 is output. Feedback for the VDD1.2 is provided to the switching controller (Pin (52) of IC501) so that PWM control to be carried out.

6. 5 V System Power Output

5 V is output. Feedback for the 5 V output is provided to the switching controller (Pin (9) of IC501) so that PWM control to be carried out.

7. LCD System Power Output

+15 V (L) is output. Feedback for the +15 V (L) is provided to the switching controller (Pin (2) of IC501) so that PWM control to be carried out.

8. Backlight Power Output

Regular current is being transmitted to LED for LCD backlight. Feedback for the both ends voltage of registance that is being positioned to in series LED are provided to the switching controller (Pin (6) of IC501) so that PWM control to be carried out.

9. Motor System Power Output

3.6 V is output. Feedback for the 3.6 V output is sent to pin (1) of IC531 for PWM control to be carried out.

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