Ricoh Pentax K-50 User manual

RICOH IMAGING CO LTD
Product No.77750 BLACK
Product No.77754 RED
Product No.77752 WHITE
Product No.77753 PINK
Product No.77751 ORDER COLOR
RICOH
IMAGING
CO
.
,
LTD
.
Global Service Department
Technical Service Group
07.13 N.T.

77750 - 1/12 -
[TABLE OF CONTENTS]
PREPARATION ------------------------------------------------------------------------------------------- 2
Preparation of Adjustments -------------------------------------------------------------------------------- 2
Outline of Assembly and Disassembly ----------------------------------------------------------------- 4
1. Caution ---------------------------------------------------------------------------------------------------- 4
2. Flow chart for assembling body and Front housing ------------------------------------------------- 4
3. [IV. Confirmation/ Adjustment] Flow ----------------------------------------------------------------- 5
Assembly and Disassembly --------------------------------------------------------------------- 6
I. Disassembly procedure of main body ----------------------------------------------------------------- 6
II. Assembly and disassembly procedure of front housing block ------------------------------------ 6
III. Assemble procedure of main body ------------------------------------------------------------------- 6
IV. Adjustment and Confirmation ------------------------------------------------------------------------ 7
TECHNICAL INFORMATION ----------------------------------------------------------------------------- 9
Battery consumption current ------------------------------------------------------------------------------ 9
Block diagram ----------------------------------------------------------------------------------------------- 10
Information of Jigs, Tools and Testers ------------------------------------------------------------------- 11

77750 - 2/12 -
PREPARATION
The following preparations are required before disassembling and assembling the camera.
1. Prepare the Jigs; tools and testers (Refer to the table of Jigs, tools and testers.)
2. Make the preparation for adjustment with referring [Preparation of Adjustments].
Preparation of Adjustments
[Required equipment]
Programmed software for 77750(CD-ROM: 95901 P426)
Computer (PC)
OS: Windows XP SP2 CPU: 1GHz or more RAM: 512MB or more
Free disk space (HD): 500MB or more Port: USB2.0
SD card 6 pieces (16Mb or above) --- for FW
SD card reader or USB cable (I-USB17) --- For connecting with PC
1. Prepare SD card (6 pcs) for adjustment
*prepare SD card (6pcs) (Format with K-50 before use)
1.ForrepairFW(ForreplacedT100) ---1pcs
2. For product FW (Firmware: Latest version/running change version 1pcs each) --- 2pcs
3. For test mode ON / OFF (For confirming full version, 1 pcs each) ----2pcs
4. For Initial set (Initialize / Product shipment) ---1pcs
2. Installing procedure of the Adjustment Software (Setting of the Computer)
*Set programmed software for 77750 (CD-R) to CD-ROM drive.
1. Copy the [77750] folder from the programmed software contained in the CD-ROM to [C: drive]
*Copy the following files from CD-RPM
2. Copy the file from [01_Replaced T100] folder to SD card --- For replaced main PCB FW (Firmware)
3. Copy the file from [02_GM_FW] folder to SD card --- For Product FW (Firmware)
4. Copy the file from [Test mode ON] and [Test mode OFF] folder in the [03_MODE SET] to each SD card.
(Since the name of all files is the same, you should distinguish them by name label etc.)
5. Copy the file from [Initialize Set] folder in the [03_MODE SET] to each SD card. --- For Initial set (Initialize)

77750 - 3/12 -
3. Installing software
[Important] Install below 3 kind of software (The same as 77010:K20D and 77050:K200D)
1. Net Framework Ver2.0 (Common with 77010 and 77050. It is not required if the software is already installed)
2. VC++2005 SP1 (Common with 77010 and 77050. It is not required if the software is already installed)
3. VB Runtime (Common with other product. It is not required if the VB Runtime is already installed)
* Set Programmed software for 77750 (CD-R) to CD-ROM drive.
① Select [dotnet.exe] from the [NetFramework2.0] folder in CD-ROM then double click icon. Installer will be
started up and follow the instruction on the screen and continue with the installation.
② Select [vcredist_x86.exe] from the [VC++2005 SP1] folder in the CD-ROM then double click icon. Installer
will be started up and follow the instruction on the screen and continue with the installation.
③ If [VB Runtime] is not set up to your PC yet, select [setup.exe] from the [vb6run_cs_xxx] folder in CD-ROM
then double click icon. Installer will be started up and follow the instruction on the screen and continue with
the installation. (Refer to the service manual for 76700 for details)
4. Calibration of light source for Digital adjustment
[Important] Execute Calibration of light source before 77750 Digital adjustments.
When replaced the program software, replaced light source or replaced AE master lens, it is required calibration.
Required equipment:
□Digital adjustment software for 77750 (M-test)
□K10D Master body for calibration (Headquarters office will rend the master body. Please contact with us)
□K-7 Master body for J400 calibration (Same as above)
□Light source (Example: LB3300, A light source)
□Master lens for 76180 (D20 or D20-01), and F8 set ring
*Use the same master lens as the ID number printed on CD-ROM to adjust it accurately.
□PC □USB cable □AC adaptor □Dark curtain □Color temperature tester (for calibrate light source)
□LV meter (for check LV value)
Following items are the same as K-30 (77650). Refer to K-30(77650) service manual for details.
4-1. Setting for computer
4-2. Calibration of light source
4-3. Setting for Master body (K10D and K-7) and Master lens
4-4. Calibration 1 (WB/K10D)
4-5. Calibration 2 (J400 / K-7)

77750 - 4/12 -
Outline of Assemble and Disassemble
1. Caution
1. Be sure to use the anti-static mat and wrist strap to prevent static failure of circuits.
2. This product is used lead free solder.
Surface of solder will be white-tinged color. Solder quickly, because melting temperature is high and so if
heat too much, it is possible to damage to PC board. Soldering iron requirement: The temperature can be
adjusted up to 400℃and exclusive use for lead free solder. Also it is desirable to use antistatic soldering
iron. The temperature for tip of soldering iron must set between 340℃～360℃for lead free solder.
3. Do not stress to the connector terminals and flexible boards because they are very delicate parts. Pay
careful attention to the connector terminals and flexible boards and, we recommend marking to the flexible
board before disconnecting them. This will be helpful to reconnect the flexible board to the connector
terminal properly.
4．Paste parts of that tape and etc. Follow the instructions in the service manual paste, so there is no float or
drift. Specially, there is a risk of a short copper foil tape and gaskets to connector.
（If adhesive tape of glue weaken, it must replace to new one.）
2. Flow chart for assembling body and Front housing
*The same as K-30(77650)
[ⅣAdjustment/Confirmation]
III. Assembling body
1．E000 (Shutter block)
2．0-A101 (Front housing)
3．A6 (Upper L plate)
4．T700 (Upper flex P.C. board)
5．T980 (RAW SW board)/T940(AF select SW board)
6．A4(R Plate)
7．T750 (Flash flex board)
8．T901 (Lower flex P.C. board)
9．0-A51 (Tripod plate)
10. [Conf] Height of SR Base Plate Support Pillar
11. 0-C000 (SR Block)
12. [Adj.] Height of 0-C000
13. T100 (Main P.C. board)
14. [Adj.] J100 position
15. 0-M311 (Eyepiece frame)
16. A150 (Front cover) /A201(Back cover)
…If M100 adjust, attached temporary cover(A150)
17. A301 (Top cover)
18. A401 (Bottom cover)
…If M100 adjust, attached temporary cover(A401)
19. [Adj.] AF-CCD position
II. Front housing block
1．A101 (Front main body assy)
2．A104 (Mount ring)
3．[Adj.] AF joint stroke
4．0-B52 (Mirror part)
5．[Adj.] First/second mirror angle
6．S250 /G100(Mirror motor part)
7．[Conf] Mirror function
8．Penta mirror part (M27)
9．[Adj.] Finder focus/Parallax
10. Finder part (O100)
11. [Adj.] O100 position
12. M100 (AF Block)
13. J100 (Photo sensor block)
14. M51, O170 (SI Block)
15. [Adj.]SI-LED position

77750 - 5/12 -
3. [II. Confirmation/ Adjustment] Flow
2. Initialize when replace T100
*Writing Product firm ware [GM_FW]
3.SR adjustment I (SR unit adjustment)
[SR_Operation]
５．M100 adjustment
『Uniformity_Adjust』
『AF_Pint_Adjustpint』
8. Shutter speed adjustment by histogram
『PDCAdj』
7. SR adjustment II (SR gain adjustment)
『SR Gain』
9. Level Zero/Image soft adjustment
『K50_levelerAdj』
Initial setting
(Factory default)
[Initialize Set]
10. Writing Warranty Record
（When replace T100 or serial
number）『Warranty_Record』
1. Battery consumption check
11. Function Check
AF check
Exposure mode/Shutter release
Capture/Playback
Live view/Movie
Flash
SDCard cover SW
Metering
Exposure
WB
AF check by taking picture
SR Function
CMOS Cleaning
Electrical leveler
FW (Firmware)
(Confirm version/Version up)
6. Digital part adjustment
『M-Test』
４．BV･Battery check･AGC
『K-50_BVAdjust』
■General check ■Must execute when replace T100
■Optional

77750 - 6/12 -
Assembly and Disassembly
External covers are difference from K-30(77650) but basic structure is the same as K-30(77650).
Following items are the same as K-30(77650). Refer to K-30(77650) service manual for details.
I. Disassembly procedure of main body
II. Assembly and disassembly procedure of front housing block
III. Assemble procedure of main body
Affix position for Grip rubber tape

77750 - 7/12 -
IV. Adjustment and Confirmation
*Following contents are adjustment and confirmation after complete [III. Assemble procedure of main body]
*[Preparation for adjustment] should be completed.
*[Caution] When execute adjustment with program software, each setting will be initialized.
Oder of each adjustment items and content of adjustment are the same as K-30(77650). This manual
write down only difference. Refer to K-30(77650) service manual for details.
1. [Confirmation] Confirmation for Battery consumption current
[Required equipment] □77420DC coupler □DC cable □Power supply (DC8.3V/3A or above)
□Circuit tester
[Caution] There are two kind of method for confirming Battery consumption current.
Depending on type of battery, select either method as followings.
*Select DC coupler with affix insulation tape or DC coupler without affix insulation tape.
①Use DC coupler without affix insulation tape: condition ÆUsing external power supply (AC
adaptor) or Lithium-ion battery (Set the power supply 8.4V)
（For confirming, External power supply (AC adaptor)＝Lithium-ion battery）
②Use DC coupler with affix insulation tape: conditionÆUsing AA batteries (Set the power supply 6.0V)
Method for checking
[Caution] Be sure to set the correct voltage. Do not mistake to set type of power source.
①Connect DC cable to the power supply and set DC6.0 or 8.3V (3A).
②Install DC coupler into battery chamber.
③Connect DC cable to DC coupler. Confirm that there must be neither short nor leakage.
[Caution]If there is short circuit, disconnect the power immediately.
④ Turn on the power and release 3 times.
⑤ [Confirmation] Turn off the power and confirm the battery consumption current. (Refer to below table)
⑥ Confirm other current if necessary. (Refer to technical information)
◆DC coupler and DC cable

77750 - 8/12 -
2. [Adjustment] Initialization when replace T100
3. [Adjustment] SR adjustment I (Unit adjustment)
4. [Adjustment] Metering, Battery check, AGC adjustment
5. [Adjustment] M100 adjustment (AF)
6. [Adjustment] Digital part (M-Test)
7. [Adjustment] SR adjustment II (Gain adjustment)
8.[Adjustment ] Shutter speed adjustment by histogram
9. [Adjustment] Level zero and Image shift adjustment
10. [Adjustment] Writing Warranty Record
11. [Confirmation] Function Check
12. [Adjustment] each setting
13. FW FIRMWARE
Consumption current (Ave) Power (DC coupler/DC cable/Power
supply/DC6.0 / 8.4V)
Main SW/OFF 100μA or less*
Main SW/ON･･･ Meter OFF 500mA / 400mA
Meter ON 600mA / 500mA
*：When replacing T100 (Before back-up battery is charged)

77750 - 9/12 -
TECHNICAL INFORMATION
Battery consumption current
Condition : Lens [FA lens, A position], each mode and setting is default setting.
Lens---- ○: With × : Without SD card---- ○: With × : Without
*Value on Battery equivalent --- DC adaptor + Power supply (3A or above)
*Value on AC power supply --- DC adaptor + AC adaptor
*1,2 included back-up battery charging current
*5,6 and 7 are peak value averages. Other value is average.
Condition of camera Lens Card
Battery
equivalent
Battery
equivalent
and AC
equivalent
DC6.0V DC8.4V
1 Main SW/OFF
○×100μA 100μA
○○100μA 100μA
××100μA 100μA
2 After auto power OFF
○×100μA 100μA
××100μA 100μA
3 Meter OFF (I-LCD:ON) ○×500mA 500mA
○○500mA 500mA
××500mA 500mA
4 Meter ON ○×600mA 500mA
○○600mA 500mA
5 Charging Flash (Meter ON) ○×3,200mA 2,800mA
6-1 Driving AF motor
(phase difference AF)
○×2,800mA 3,000mA
SDM ×1,600mA 1,400mA
6-2 Driving AF motor (Contrast AF) ○×2,800mA 3,000mA
SDM ×2,000mA 1,600mA
7 Releasing shutter ○×2,800mA 3,000mA
○○2,800mA 3,000mA
8 Recording image after release the shutter ○○600mA 600mA
9 Bulb ○×600mA 500mA
○○600mA 500mA
10 Displaying menu
(Meter:ON,I-LCD:ON)
○×600mA 500mA
11 Displaying menu (Meter:ON,Video
output:ON, -LCD:ON)
○×600mA 500mA
12-1 Displaying playback image(Meter:ON) ○○600mA 500mA
12-2 Displaying playback image(Meter:OFF) ○○500mA 400mA
13 Reading playback image in the card ○○600mA 500mA
14 Stand by for USB communication ○○400mA 400mA

77750 - 10/12 -
15 Reading playback image in the card
with USB communication
○○400mA 400mA
16 During Live view ○○800mA 700mA
17 Stand by for Movie ○×900mA 800mA
18 Recoding Movie ○○1,000mA 800mA
19 Playback Movie ○○600mA 500mA

77750 - 11/12 -
77750 Circuit Block Diagram -

77750 - 12/12 -
Information of Jigs, Tools and Testers for 77750
Order No.
* Exclusive use for77750 (K-50)
Programsoftfor77750K-50(ForSLR/digital/SR) No.95901-P426
For77420 (K-r)
DC coupler D-DC109 (Battery level adjustment/ Battery consumption check) Provide locally
*When adjusting battery level, affix insulation tape on Battery adaptor.
For77170(K-2000)
Temporary bottom cover (For M100 adjustment, Handmade)
2 SD card (32MB or above)
(For FW, test shooting --- Recommend 512MB or above)
For76830(K-10D)
K10D Master body for calibration
Ricoh imaging will rend the master body. Please contact with us.
F5.6 Set plate for D20 (95901 D20)
--- *If you have D20-01, you do not need set plate.
F5.6 Set plate A (For Lens ID No.101~130) No. 95901-D27-00A
F5.6 Set plate B (For Lens ID No.1~99) No.95901-D27-00B
DC code (connect with power supply or DC adaptor, Battery consumption check) No.95901-D25
For76700(K100D)
76700 SR adjusting Jig (required AC100V) No.95901-J140
[Caution] If your area is not 100V, you must provide transformer at locally.
76700 SR unit adjusting base No.95901-J141
SR gain chart (The same as K100D)
AC adaptor kit (D-AC76 (-AC10),AC cable)
*Others --- Common with 76700(K100D)
(Refer to service manual for 76700)
Prepare temporary bottom cover
Equipment:Ａ150(front cover), A401(Bottom cover)
For M100 adjustment
Handmade
◆DC coupler and DC code
Cut off A150, A401