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DIGITAL VIDEO CAMCORDER
Chassis : Delta SCD20/SCD21/SCD22/SCD23/SCD24 SCD27/SCD29 VP-D20/D21/D23/D24/D26 VP-D20i/D21i/D23i/D24i/D26i

ADJUST
DIGITAL VIDEO CAMCORDER
ELECTRONICS
B LC FA D R SE A SE CH E REC EAS Y
SA A A A
MS
UN
A GC

Manual
CONTENTS 1. VCR Adjustment 2. Camera Adjustment 3. LCD Adjustment 4. Deck Adjustment

This Manual is for only Alignment and Adjustment method of "Delta" Chassis. File with the Service Manual.

This Service Manual is a property of Samsung Electronics Co .,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

Samsung Electronics Co., Ltd. JUL. 2003 Printed in Korea AD82-00013A

M CO

RDER

L E N S 10X Z O O M

1. VCR Adjustment
1-1 VCR Adjustment Preparation
1) How to get into the VCR adjust mode
STEP 1 OE Connect the power source. Set the power switch to "TAPE" position. STEP 2 OE Press and hold the "STOP" and "EASY" buttons on the video camera at the same time for more than 5 seconds. When monitor OSD appears as shown Fig. 1-2, the adjustment mode has been activated successfully. Move the "MENU Dial" to highlight VCR ADJ and push the "ENTER". (See Fig. 1-3) When changing the adjustment item, please press the "EASY" and "DISPLAY" buttons on the video camera. ^ You can change the adjustment value to move the "MENU Dial" Up or Down. After setting adjustment value, please push the "ENTER" to confirm Data. STEP 3 If you want to finish the adjustment mode, you have to do Power Reset. The Power Reset means that you pull out the power source and pull in it again. EASY Button STOP Button DISPLAY Button MENU Dial

T IGH V.L

DISPLAY

PB ZO OM

ENTER Button

Fig. 1-1

ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ

Fig. 1-2

SP -:--:--:VCRADJ 430 EPR FF EVR FF

Indicates current adjustment item Indicates the adjusted values Indicates preset values

Fig. 1-3

Samsung Electronics

1-1

Alignment and Adjustments

2) Function of each buttons on the SET Key
Buttons ENTER push (Confirm) MENU Dial down (Data Down) MENU Dial up (Data Up) EASY (Mode Up) DISPLAY (Mode Down) Description Stores changed value in the adjustment and auto adjustment mode. Changes data in the adjustment state. Changes mode.

1-2 VCR Adjustment
Model(Address) 437 Name SWP Position Value 80 Description Head Switching Position Adjust

1) How to adjust Head Switching Position
OE Get into VCR ADJUST mode. Move to the VCR ADJUST address "437". Play standard tape, and "Head Switching Position" will be adjusted automatically.

1-2

Samsung Electronics

Alignment and Adjustments

2. Camera Adjustment
Note : How to adjust the camera system. 1) EEPROM stores confirmed adjustment value of each adjustment step. 2) DSP (Digital Signal Process : ICA01-Camera Main PCB) digitalizes the camera signal. 3) When changing IC705-Main PCB of EEPROM, readjust Main PCB. While changing LCD PCB and CVF PCB- always readjust each part. Since EEPROM stores confirmed adjustment value of each adjustment step, readjusting must be performed in order to store the changed data. 4) Adjust the following items after changing LENS Ass'y. OE Lens Zoom Track Auto HALL Auto IRIS 5) Adjust the following items after changing EEPROM and Main PCB. OE Lens Zoom Track Zoom VR Center Auto HALL Auto IRIS ^ Auto White Balance (indoor) Auto White Balance (outdoor)

2-1 Adjustment Preparation
1) Measuring Instrument
OE DC power supply Oscilloscope NTSC Vectorscope, PAL vectorscope NTSC wave form monitor, PAL wave form monitor ^ NTSC TV or Monitor, PAL TV or Monitor Color bar chart Gray scale chart

2) Camera PCB configuration
OE Main PCB CCD PCB LCD PCB CVF PCB

3) Before you start
OE Use the buttons on the SET key when adjusting camera. Press the push the "ENTER" when storing confirmed adjustment value of each adjustment step in EEPROM. The OSD shows "OK" after finishing each adjustment step. To clear the adjustment mode, pull out the power source.

Samsung Electronics

2-1

Alignment and Adjustments

4) Function of each buttons on the SET Key
Buttons ENTER push (Confirm) MENU Dial down (Data Down) MENU Dial up (Data Up) EASY (Mode Up) DISPLAY (Mode Down) Description Stores changed value in the adjustment and auto adjustment mode. Changes data in the adjustment state. Changes mode.

5) How to set up the camera adjustment mode
STEP 1 OE Connect the power source (battery/DC cable). Set the power switch to "CAMERA" position. The OSD appears.

EASY Button STOP Button DISPLAY Button MENU Dial

STEP 2 OE Press and hold the "STOP" and "EASY" buttons on the video camera at the same time for more than 5 seconds. When monitor OSD appears as shown Fig. 2-2, the adjustment mode has been activated successfully. Move the "MENU Dial" to highlight CAM ADJ and push the "ENTERl". When changing the adjustment item, please press the "EASY" button on the Camera. ^ You can change the adjustment value to move the "MENU Dial" Up or Down. After setting adjustment value, please push the "ENTER" to confirm Data. STEP 3 CAMERA EPR EVR Monitor OSD shows " OCD FF FF ". Then camera adjustment mode has been activated successfully.

T IGH V.L

DISPLAY

PB ZO OM

ENTER Button Fig. 2-1

ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ

Fig. 2-2

2-2

Samsung Electronics

Alignment and Adjustments

2-2 Camera Adjustment
Note : "XX XX" indicate the previous preset value and adjusted value. Press the "ENTER" (Confirm) to store the adjusted value.

CAMERA OCD

EPR EVR XX XX Adjusted values Stored values

Fig. 2-3

1) EEPROM Data Initialize
Caution : This adjustment must do following items changing new EEPROM (IC705) or Main PCB. OE Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "ODF XX XX". Using "MENU Dial"(Data Up/Down) so that display data of EVR is "A0" Press the "ENTER" (Confirm). The OSD shows "OK" after huithing the initalize.

2) Lens Zoom Track

Caution : For whole zoom range, it shall be in focus. The location of a focus lens is moving depending on the location of Zoom Lens. During adjusting, micom measures the focus location from a near distance to a long. OE Camera is set to E-E mode. Focus chart photo. Ensure that camera is left an about 3m distance from a focus chart and the focus of lens is placed vertically. Attach a focus chart to white or gray wall of a flat surface. Connect a video output terminal to a TV. ^ Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "ODE XX XX". Press the "ENTER" (Confirm). Never impact on the lens when adjusting zoom and focus Lens. The OSD shows "OK" after finishing the adjustment. 3M 1cm (Be sure to maintain the distance)

LENS

CCD

Fig. 2-4 Samsung Electronics 2-3

Alignment and Adjustments

3) Zoom VR Center
OE Connect a video output terminal to a TV. Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "OD6 XX XX". Press the "ENTER" (Confirm). Then Micom finds out Zoom VR center position. Store Zoom VR center value in OB7.

4) Auto HALL
OE Connect a video output terminal to a TV. Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "OCD XX XX". Press the "ENTER" (Confirm). Then micom finds out max. Hall value with an iris opened and min. Hall value with an iris closed. Store max. and min. value of Hall in OAD and OAC respectively. ^ The OSD shows "OK" after finishing the adjustment.

5) Auto IRIS Level
OE Connect a video output terminal to a wave form monitor and a TV. Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "OCE XX XX". Press the "ENTER" (Confirm). Then micom finds out max. Hall value with an iris opened and min. Hall value with an iris closed. Store max. and min. value of in OBC, OBD and OBB respectively. ^ The OSD shows "OK" after finishing the adjustment.

6) Auto White Balance (indoor)
OE Camera mode & 3100 K/5100 K gray scale chart. Connect a video output terminal to a vectorscope and a TV. Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "OD4 XX XX". Ensure that camera picks up image 40s on 3100K gray scale chart precisely and the illumination is 1500~2000 Lux. ^ Press the "ENTER" (Confirm) to ensure that white spot on a vectorscope is moving in the middle of screen. The OSD shows "OK" after finishing the adjustment.

7) Auto White Balance (outdoor)
OE Camera mode & 3100 K/5100 K gray scale chart. Connect a video output terminal to a vectorscope and a TV. Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "OD5 XX XX". Ensure that camera picks up image 40 s on 5100 gray scale chart (3100 gray scale chart + C16 filter) precisely and the illumination is 1500~2000 Lux. ^ Press the "ENTER" (Confirm) to ensure that white spot on a vectorscope is moving in the middle of screen. The OSD shows "OK" after finishing the adjustment.

2-4

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Alignment and Adjustments

3. LCD Adjustment
Note : For LCD adjustment, use the buttons on the video camera and the SET key. After each adjustment step is completed, OSD shows "OK". EEPROM(ICL202) stores confirmed adjustment value of each adjustment step. After finishing the adjustment, turn power off.

3-1 How to get into the LCD adjust mode
STEP 1 OE Connect the power source (battery/DC cable). Set the power switch to "REC" position. Set the Lens to CAMCORDER. Camera screen and OSD appears. ^ Open housing of the video camera and remove tape. Open the LCD. STEP 2 OE Press and hold the "STOP" and "EASY" buttons on the video camera at the same time for more than 5 seconds. When monitor OSD appears as shown Fig. 3-2, the adjustment mode has been activated successfully. Move the "MENU Dial" to highlight LCD/CVF ADJ and push the "ENTER". When changing the adjustment item, please press the "EASY"/"DISPLAY" buttons on the camera. ^ You can change the adjustment value to move the "MENU Dial" Up or Down. After setting adjustment value, please push the "ENTER" to confirm Data. EASY Button

ADJ ITEM
STOP Button DISPLAY Button MENU Dial

VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ

T IGH V.L

DISPLAY

PB ZO OM

ENTER Button Fig. 3-1 Fig. 3-2

3-2 Function of each buttons on the SET Key
Buttons ENTER push (Confirm) EASY (Mode Up) DISPLAY (Mode Down) MENU Dial up (Data Up) MENU Dial down (Data Down) Description Stores changed value in the adjustment and auto adjustment mode. Shift adjustment address to left. Shift adjustment address to right. Up value. Down value.

Note : In service adjustment mode, button names are different from those in customer function control mode. Samsung Electronics 3-1

Alignment and Adjustments

3-3 Adjust Mode
NTSC Mode 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 TRANSMISSION 55 80 A0 4F 80 C6 B5 80 80 70 95 80 76 60 D0 15 52 CD C0 80 00 00 TRANS-Reflective 55 80 A0 4F 80 C6 B5 80 80 70 95 80 76 60 D0 15 52 CD C0 80 00 00 TRANSMISSION 55 80 A0 4F 80 C6 B5 80 80 70 95 80 76 60 D0 15 52 CD 80 93 00 00 PAL TRANS-Reflective 55 80 A0 4F 80 C6 B5 80 80 70 95 80 76 60 D0 15 52 CD 80 93 00 00

3-2

Samsung Electronics

Alignment and Adjustments

4. Deck Adjustment
4-1 Operation Without Housing Assembly
1) Remove the Housing Ass'y from the recorder unit. 2) Connect the mechanical chassis to the recorder circuit to supply voltage. 3) Set to Unload mode. 4) Press the S/W Push(Keep ON status)to start loading, and push the PLAY Key. (Cover the Top/End sensor with black tape, because they do not operate.) Note : For the removal of the Housing Ass'y.

CONNECTED TO THE RECORDER CIRCUIT

SWITCH PUSH

Fig. 4-1

4-2 Setting Mechanical Mode (Without Recorder Circuit)
1) Set the power-supply output to approx.3V. 2) Choose the polarity (depending on whether loading or unloading). 3) Supply the voltage to the Motor Loading, and set to the desired mode.
A + B + Movement of chassis Loading Unloading

DC POWER SUPPLY A

B

Fig. 4-2

Samsung Electronics

4-1

Alignment and Adjustments

4-3 Maintenance
Carry out the following periodic maintenance checks in order to fully exercise all functions, operations and tape. After repairing, service the set as follows:

1) Cleaning of Drum Assembly
OE Gently apply lens tissue soaked in ethyl alcohol to the Drum assembly. Clean the Upper Drum assembly while rotating it slowly counterclockwise(by hand). Note : Do not rotate the motor by power or rotate the Upper Drum assembly clockwise. Also, the Head tip will be damaged if the lens tissue is moved in a perpendicular direction. Be sure to follow these instructions when cleaning the Drum Ass'y

2) Cleaning of Tape Path
OE In EJECT mode, clean the tape path system(from Pole Tension P1 through Pole Review P7, Pinch Roller and Capstan Shaft) and the Lower Drum. Using the lens tissue soaked in ethyl alcohol. Note : Make sure that no oil or grease adheres to the lens tissue.

P4 P2 P6 P7 P5 PINCH ROLLER

P1 P3

Fig. 4-3

4-2

Samsung Electronics

Alignment and Adjustments

3) Periodic Maintenance and Check List
When overhauling, refer to the following table.
Maintenance checks
Tape path system

Hours of use (H) 500 O O 1000 O O 1500 O O 2000 O O 2500 O O 3000 O O 3500 O O 4000 O O 4500 O O 5000 O O

Remark

D R I V I N G

S Y S T E M

Performance

Confirmation

Cleaning of tape path Cleaning and degaussing of drum ass'y Capstan Shaft Gear Capstan Gear Pully Shaft Belt Timing Motor Loading Abnormal Noise Back Tension Brake System PB, REV Torque Measurement

- Never let oil get on to the tape path surface.









O : Cleaning

: COil

: Confirmation

When lubrication bearings, be sure to keep the oil free of dust. (Oil contaminated with dust might cause the bearings to wear out or seize.) A "drop"of oil is defined as the amount attached to the tip of a 2mm stick as shown in Fig. 4-4.

2mm

OIL Fig. 4-4

Samsung Electronics

4-3

Alignment and Adjustments

4-4 Mechanical Check and Adjustment
4-4(a) Tension Regulator Adjustment
1) Disassembly OE For the removal of the Housing Ass'y. 2) Adjustment OE Set to PLAY mode (without cassette tape). Check that the distance between external surface of Holder Loading and center of Arm Tension is 0~1mm. (Fig. 4-5) If necessary, proceed to step 4. If the Arm Tension is located inside the position specified, adjust the Band Adjust Tension toward arrow A. (If it is located outside, adjust toward arrow B.) Note : Check if the Arm Tension can be moved toward arrow C in PB mode. 3) Reassembly OE For the removal of the Housing Ass'y. 1 0.3

ARM TENSION

CAP ADJUSTMENT

Fig. 4-5

4-4

Samsung Electronics

Alignment and Adjustments

4-4(b) Back Tension Confirmation
1) Set up the cassette-torque tape. 2) Set to CAMERA mode, push the EDIT(+) KEY and check that the torque value of Reel S is 4.50.5g.cm.

4-4(c) PB/REV Torque check
1) Set up the cassette torque tape. 2) Set to CAMERA mode, Push the EDIT(+)Key and check that the torque value of Reel T is 7.53g.cm. 3) Push the EDIT(-) Key and check that the torque value of Reel S is 12.53g.cm. 4) If necessary, replace the defective Gear pully Ass'y.

4-4(d) Reel Table Height Check
1) Removal OE For the removal of the Housing Ass'y. For the removal of the Idler Ass'y. 2) Check OE Using vernier calipers, check the following distances : From the upper surface of the PCB Reel to the resting surfaces of Reel S, T table should each be 3.90.1mm. 3) Mounting OE For the removal of the Idler Ass'y. For the removal of the Housing Ass'y. A, B : 3.9 0.1mm REEL DISK S TABLE RESTING SURFACE REEL DISK T TABLE RESTING SURFACE

A

B

CHASSIS SUB Fig. 4-6

Samsung Electronics

4-5

Alignment and Adjustments

4-5 Tape Path Adjustment
4-5(a) Preparation for Adjustment
OE Clean the tape running surface(Poles, Drum, Capstan Shaft, Pinch Roller). Observe the PB RF signal and Head Switching Pulse on an oscilloscope. Play back the alignment tape. Check that the waveform of the RF signal is flatat both inlet and outlet(A in Fig. 4-7). If not flat (B or C in Fig. 4-7), do adjustments 4-5(b) through 4-5(d). INLET OUTLET

A NORMAL

B DEFECT AT INLET

C DEFACT AT OUTLET

Fig. 4-7 P3

P1

P2

P5 P6 P7

S REEL

T REEL

Fig. 4-8

4-6

Samsung Electronics

Alignment and Adjustments

4-5(b) Tracking adjustment
OE Play Back the alignment tape. Turn P3 to flatten the waveform at the inlet. Turn P5 to flatten the waveform at the outlet. P7 CAPSTAN P5 P3

Fig. 4-9

4-5(c) P7 Adjustment
OE Play back the alignment tape, and confirm that the tape is not twisted between the Guide Roller T and Capstan. (If the tape is twisted, turn P7, Fig. 4-10) Set to REV mode and observe the outlet waveform of PB RF signal. (Fig. 4-11) If the outlet waveform is out-of-spec, turn P7 counterclockwise, and redo steps 1 and 2.
P7 CAPSTAN P5 P3

Fig. 4-11

Fig. 4-10

Samsung Electronics

4-7

Alignment and Adjustments

4-5(d) Check After Adjustment
1) Tracking Check OE Play back the alignment tape. Confirm that the minimum amplitude value(E min.)is 80% of the maximum value(E max.) or larger. (Fig. 4-12) Confirm that no large fluctuation occur on the waveform. (Fig. 4-13)

C EMIN EMAX A

C EMIN EMAX 80(%) C Fig. 4-13

1 A 8

Fig. 4-12

2) CUE and REV Check OE Play back the alignment tape, and set to REV mode. Confirm that the waveform peaks have a uniform Pitch.(Fig. 4-14 A) If the track pitch is not uniform, do section 4-5(b) (Tracking adjustment) and 4-5(c) (P7 adjustment). Set to CUE mode. Confirm that the waveform peaks still have a uniform pitch. (Fig. 4-14 B) If the track pitch is not uniform, do section 4-5(b) (Tracking Adjustment). a a b c b c a b c

Fig. 4-14

4-8

Samsung Electronics

Alignment and Adjustments

3) Rise Time Check OE Play back the alignment tape. Set to playback mode, and confirm that the waveform of PB RF signal rises flat within 3 seconds. Also confirm that the tape is not twisted or curled around the Pinch Roller. (Fig. 4-15) Run the tape in CUE/REV and FF/REW modes, then playback. Confirm the waveform of PB RF signal rises flat within 3 seconds. Also confirm that the tape is not twisted or curled around the Pinch Roller. Repeat steps 2. and 3. 4) Tape Path Check OE In CUE and REV modes, check that the tape is not curled around the P1, P3, P5 upper flange and P7 upper/Lower flanges.

P7

CAPSTAN P5

P3

Fig. 4-15

P1

P2

P3

P5

P7

FROM THE S REEL Fig. 4-16

FROM THE T REEL

Samsung Electronics

4-9

Alignment and Adjustments

MEMO

4-10

Samsung Electronics