# Sony RM-M7G Remote Control Unit

## Summary

The Sony RM-M7G is a compact remote control unit for Sony professional SD video
camera systems. It is commonly associated with the DXC-M7 family, CCU-M7/CCU-M3,
CCU-M5/M5A, CCU-D50, and several DXC/DSR camera families through the Sony CCA-7
10-pin remote cable.

The most repair-useful public source is the 41-page RM-M7G/RM-M7GP service
manual on ManualsLib.

Primary source:
<https://www.manualslib.com/manual/3397442/Sony-Rm-M7g.html>

Local PDFs:

- [docs/manuals/rm-m7g.pdf](manuals/rm-m7g.pdf)
- [docs/manuals/6916f3.pdf](manuals/6916f3.pdf)

## Known Specifications

From the RM-M7G service manual:

- Power requirements: 9 V to 17 V DC.
- Power consumption: 0.4 W.
- Monitor connector: BNC, VBS 1.0 Vp-p, 75 ohms.
- CCU/CAMERA connector: 10-pin.
- AUX connector: 10-pin.
- Operating temperature: -5 C to +40 C.
- Storage temperature: -20 C to +60 C.
- Dimensions: 86 x 170 x 47 mm.
- Weight: about 500 g.
- Supplied accessory: operating instructions.

## Recommended / Compatible Equipment

The RM-M7G service manual lists:

- Video camera: DXC-M7.
- Camera control cables: CCA-7-5, CCA-7-25, CCA-7-50, CCA-7-100.
- Camera control units: CCU-M7, CCU-M3.
- Studio adaptor: CA-M7.

Other public Sony/camera documentation and product pages also connect the RM-M7G
to:

- DXC-D30/D30WS.
- DXC-D35 family in some CCU-D50 workflows.
- DXC-327, DXC-537, DXC-637 families depending on camera/adaptor/CCU.
- DSR-390 and DSR-570WS family camcorders.
- CCU-M5/M5A and CCU-D50.

## Controls and Functions

Public listings describe the RM-M7G as controlling principal camera paint and
operation functions, including:

- Gain selection.
- Output mode selection.
- VTR start/stop.
- Iris auto/manual and auto-iris override.
- Auto/manual/preset white and black balance.
- White balance memory.
- R/B gain.
- Gamma manual/preset.
- Master pedestal.
- R/B pedestal.
- Knee point auto/manual/preset.
- Panel active handoff when used with compatible CCUs.

Function availability depends heavily on the camera and CCU/adaptor. For
example, Sony DXC-327 documentation states some RM-M7G controls do not affect
output in that system, and some camera-side switches are disabled while the
remote is connected.

## Service Manual Contents

The RM-M7G/RM-M7GP service manual table of contents includes:

- Adjustments.
- General description.
- Location and function of controls.
- Connections.
- Adjustments.
- Service information.
- Cabinet removal.
- Connectors and cables.
- Connector input/output signals.
- Connections.
- Block diagram.
- Semiconductor electrodes.
- Schematic diagram and board.
- Spare parts.
- Parts information.
- Exploded view.

This is the best starting point for repair, continuity checks, parts
identification, and reverse engineering the hardware.

## Connector Notes

The rear panel has:

- MONITOR BNC output for VBS monitoring.
- CCU/CAMERA 10-pin connector for the camera or CCU via CCA-7 cable.
- AUX 10-pin connector, described in the manual as reserved for future expansion.

Important: verify the actual pinout in the service manual before connecting
custom hardware. Some related Sony manuals describe the broader 10-pin remote
interface as RS-232C-based/proprietary Sony protocol, but signal names and power
pins vary by device and generation.

## Repair Notes

Good first checks for a dead unit:

- Confirm 9 V to 17 V DC supply from the camera/CCU on the CCA-7 connector.
- Inspect the 10-pin connector for bent pins or cracked solder joints.
- Confirm the CCA-7 cable is pinned straight-through and has no shield/ground
  faults.
- Check whether the connected camera/CCU requires `PANEL ACTIVE` handoff.
- If powered but not controlling, confirm the bottom CAMERA SELECT switch
  position for the connected camera/CCU.
- With CCU-D50/D50P, set the RM-M7G CAMERA SELECT switch to `1`, press
  `PANEL ACTIVE` on the RM-M7G for remote control, and use the CCU front-panel
  `PANEL ACTIVE` button to hand control back to the CCU.

For board-level repair, use the service manual's schematic/board section rather
than relying on the operating manuals.
